Hyundai Getz>> Engine>> Power supply system
Admission system  
The power supply system consists of the air filter, a fuel tank, the fuel pump, топливопроводов and a fuel stage with nozzles. Besides, sensors, the fuel filter and a throttle branch pipe enter into a power supply system of engines with a regulator of pressure of fuel. The fuel pump electric, pogruzhny type is established in a fuel tank and is incorporated with the sensor of the index of level of fuel.

Cars with engines in working volume of 1,1 and 1,3 l

Fig. 2.153. Inlet pipeline and throttle branch pipe: 1–inlet pipeline; 2–throttle branch pipe


The inlet pipeline and throttle branch pipe are shown on fig. 2.153 .
Removal of elements of a power supply system

Fig. 2.154. Contact sockets of sensors of absolute pressure and provision of a butterfly valve: 1–sensor of absolute pressure; 2–sensor of provision of a butterfly valve


Fig. 2.155. Contact socket of a regulator of idling of the engine in working volume of 1,3 l


Fig. 2.156. Contact socket of a regulator of idling of the engine in working volume of 1,1 l


Separate sockets of the sensor of absolute pressure (fig. 2.154) , an idling regulator (fig. 2.155 and 2.156)  and the sensor of provision of a butterfly valve (see fig. 2.154 ).
Disconnect an air branch pipe from a throttle branch pipe.
Disconnect a cable of a drive of a butterfly valve.

Fig. 2.157. Hose of ventilation of a case


Fig. 2.158. Hose of the vacuum amplifier of brakes


Disconnect a hose of ventilation of a case (fig. 2.157) and a hose of the vacuum amplifier of brakes (fig. 2.158) .

Fig. 2.159. Hoses of a supply of cooling liquid to a throttle branch pipe


Disconnect hoses of cooling liquid from unions of a throttle branch pipe (fig. 2.159) .

Fig. 2.160. Contact sockets of fuel nozzles


Disconnect contact sockets from fuel nozzles (fig. 2.160) .

Fig. 2.161. A fuel stage with nozzles


Remove a fuel stage assembled with nozzles (fig. 2.161) .

Fig. 2.162. Rack of fastening of the inlet pipeline


Remove a rack of fastening of the inlet pipeline (fig. 2.162) .
Remove the inlet pipeline.
Check of a technical condition
Check a receiver on existence of defects or cracks and if necessary replace it.
Check the inlet pipeline on existence of damages or cracks.
Check an air hose on existence of damages or cracks.
Installation
Establish a fuel stage with nozzles.

PREVENTION
At installation of a fuel stage it is necessary to accept precautionary measures not to allow falling of nozzles.

Connect contact sockets of nozzles.
Attach a hose of ventilation of a case and a vacuum hose of the amplifier of brakes.
Attach an air branch pipe to a throttle branch pipe.
Attach a cable of management of a butterfly valve.
Connect sockets of a regulator of idling, sensors of absolute pressure and the provision of a butterfly valve.

Air filter

Fig. 2.163. Air filter and branch pipes of system of an admission: 1–a bringing branch pipe; 2–cover of the case of the air filter; 3–a filtering element; 4–case of the air filter; 5–arm of fastening of the case of the air filter; 6–compound airintaking branch pipe


The air filter is shown on fig. 2.163 .
Removal
Disconnect an airintaking branch pipe from the case of the air filter.
Disconnect from the case of the air filter bringing branch pipe of inlet system.
Uncover cases of the air filter and take out filtering element.

Fig. 2.164. Removal of the case of the air filter of the engine in working volume of 1,1 l


Fig. 2.165. Removal of the case of the air filter of the engine in working volume of 1,3 l


Remove the case of the air filter, having unscrewed fastening bolts (fig. 2.164 and 2.165) .
Check of a technical condition
Check the case, a cover and filtering element on lack of a buckling, corrosion or damages.
Check an airintaking branch pipe on absence of damages.
Check, will not bend and whether the exhaust silencer of noise of an admission is damaged.

Fig. 2.166. Removal of a dust and other pollution by a purge of the top surface of a filtering element by the compressed air


Check filtering element on capacity reduction, pollution or damage. At insignificant pollution it is possible to remove a dust and other pollution by a purge by the compressed air from the top surface of an element (fig. 2.166) .
Check the case of the air filter on a contamination, pollution or existence of damages.
Installation
Installation of the air filter is carried out as it should be, the return to removal.

Fig. 2.167. Air filter assembled


The air filter is assembled shown on fig. 2.167 .

Cars with engines in working volume of 1,5 and 1,6 l

Fig. 2.168. Inlet pipeline and throttle branch pipe: 1–receiver; 2–inlet pipeline; 3–throttle branch pipe


The inlet pipeline and throttle branch pipe are shown on fig. 2.168 .
Removal of elements of a power supply system

Fig. 2.169. Contact sockets of sensors of absolute pressure and provision of a butterfly valve: 1–sensor of absolute pressure; 2–sensor of provision of a butterfly valve


Separate sockets of the sensor of absolute pressure (fig. 2.169) , a regulator of idling and the sensor of provision of a butterfly valve.

Fig. 2.170. Hose of ventilation of a case


Fig. 2.171. Hose of the vacuum amplifier of brakes


Disconnect a hose of ventilation of a case (fig. 2.170) and a hose of the vacuum amplifier of brakes (fig. 2.171) .

Fig. 2.172. Hoses of a supply of cooling liquid to a throttle branch pipe


Disconnect hoses of cooling liquid from unions of a throttle branch pipe (fig. 2.172) .

Fig. 2.173. Removal of the case of the air filter of the engine


Disconnect an airintaking branch pipe from the case of the air filter and remove the filter case (fig. 2.173) .

Fig. 2.174. Contact sockets of fuel nozzles


Disconnect contact sockets from fuel nozzles (fig. 2.174) .
Disconnect a cable of a drive of a butterfly valve.

Fig. 2.175. A fuel stage with nozzles


Remove a fuel stage assembled with nozzles (fig. 2.175) .

Fig. 2.176. Rack of fastening of the inlet pipeline


Remove a rack of fastening of the inlet pipeline (fig. 2.176) .
Remove the inlet pipeline in collecting and laying of the inlet pipeline.
Check of a technical condition
Check a receiver on lack of defects or cracks and if necessary replace it.
Check the inlet pipeline on absence of damages or cracks.
Check an air hose on absence of damages or cracks.
Installation
Establish the inlet pipeline with new laying.
Establish a rack of the inlet pipeline.
Establish a fuel stage with nozzles.
Connect contact sockets of nozzles.
Attach a hose of ventilation of a case and a vacuum hose of the amplifier of brakes.
Attach an air branch pipe to a throttle branch pipe.
Attach a cable of management of a butterfly valve.
Connect sockets of a regulator of idling, sensors of absolute pressure and the provision of a butterfly valve.

Air filter

Fig. 2.177. Air filter and branch pipes of system of an admission: 1–a bringing branch pipe; 2–cover of the case of the air filter; 3–a filtering element; 4–case of the air filter; 5–arm of fastening of the case of the air filter; 6–compound airintaking branch pipe


The air filter is shown on fig. 2.177 .
Removal
Disconnect an airintaking branch pipe from the case of the air filter.
Disconnect from the case of the air filter bringing branch pipe of inlet system.
Uncover cases of the air filter and take out filtering element.

Fig. 2.178. Removal of the case of the air filter of the engine


Remove the case of the air filter, having unscrewed fastening bolts (fig. 2.178) .
Check of a technical condition

Fig. 2.179. Air filter


Check the case, a cover and filtering element (fig. 2.179)  on existence of a buckling, corrosion or damages.
Check an airintaking branch pipe on absence of damages.
Check, will not bend and whether the exhaust silencer of noise of an admission is damaged.

Fig. 2.180. Removal of a dust and other pollution by a purge of the top surface of a filtering element by the compressed air


Fig. 2.181. A manometer and a hose for check of pressure of fuel (number according to the catalog of spare parts and adaptations 09353-24100)


Check filtering element on capacity reduction, pollution or damage. At insignificant pollution it is possible to remove a dust and other pollution by a purge by the compressed air from the top surface of an element (fig. 2.181) .
Check the case of the air filter on a contamination, pollution or existence of damages.
Installation
Installation of the air filter is carried out as it should be, the return to removal.

Control system of the engine
On Hyundai Getz cars the electronic control system of the engine, i.e. system of the distributed injection of fuel is applied. Distributed injection is called because for each cylinder fuel is injected by a separate nozzle. The system of injection of fuel allows to reduce toxicity of the fulfilled gases at improvement of road performance of the car.
There are systems of the distributed injection with feedback and without it. In the present section only the short description of the general principles of the device, work and repair of systems of injection of fuel is given.
Hyundai engines are equipped with a control system with feedback. In system of release catalytic converter and the sensor of concentration of oxygen which provides feedback is established. The sensor traces concentration of oxygen in the fulfilled gases, and the controler on its signals supports such ratio of air and fuel which provides the most effective work of converter.
In injection system without feedback converter and the sensor of concentration of oxygen is not established, and for concentration adjustment WITH in the fulfilled gases serves WITH - a potentiometer. In this system the catching system паров gasoline is not applied also.
Moments of an inhaling of carving connections, N · м:
Bolts of fastening of a fuel stage..... 10–15
Sensor of concentration of oxygen..... 50–60
Bolts of fastening of the sensor of provision of a cranked shaft..... 9–11
Bolt of fastening of the sensor of a detonation..... 16–25
The sensor of temperature of cooling liquid..... 15–20
Bolts of fastening of the sensor of provision of a butterfly valve..... 1,5–2,5
Bolts of fastening of the case of a butterfly valve to a receiver..... 15–20

Special tool and adaptations
At works with a control system of the engine the following adaptations can be demanded.
1. A manometer with a hose for check of pressure of fuel (fig. 2.181) .

Fig. 2.182. A connecting branch pipe for a manometer of pressure of fuel (number according to the catalog of spare parts and adaptations 09353-24000)


2. A connecting branch pipe for a manometer of pressure of fuel (fig. 2.182) .

Fig. 2.183. An adapter for a manometer of pressure of fuel (number according to the catalog of spare parts and adaptations 09353-3800)


3. An adapter for a manometer of pressure of fuel (fig. 2.183) .

Main malfunctions and their reasons
Determination of malfunctions always needs to be begun with the main systems of the engine (tab. 2.3 and 2.4).

Table 2.3
Malfunctions of the engine and order of their definition
Signs
malfunctions
Procedure for test
The engine is not started up
At inclusion
starter crankshaft
engine not
it is scrolled
1. Tension of the storage battery
2. Starter
3. Parking neutral switch (an automatic transmission) or switch of blocking of a starter (mechanical transmission
4. Flywheel (a mechanical transmission) or leading flange (automatic transmission
Incomplete combustion
mixes
1. Tension of the storage battery
2. Ignition system
3. Chain of the sensor of a mass consumption of air
4. Idling regulator
5. Regulator of pressure of fuel
6. A chain of the sensor of temperature of cooling liquid
7. A compression in engine cylinders
8. Piston rings
9. Installation of phases of a gazoraspredeleniye
10. Nozzles
11. EBU engine
The engine is started up hardly
At not heated-up
engine
1. A chain of the sensor of temperature of cooling liquid
2. Quality of fuel
3. Idling regulator
4. Regulator of pressure of fuel
5. Fuel pump
6. Toplivoprovoda
7. A chain of the sensor of temperature of cooling liquid
8. Installation of phases of a gazoraspredeleniye
9. Nozzles
10. EBU engine
At the heated-up engine
1. Conditioner chain
2. Idling regulator
3. EBU engine
4. Sensor of provision of a cranked shaft
In any temperature condition
engine
1. Quality of fuel
2. Spark plugs
3. Fuel pump
4. Toplivoprovoda
5. Ignition system
6. A chain of the sensor of temperature of soaked-up air
7. A compression in engine cylinders
8. Piston rings
9. Corner of an advancing of ignition
10. Installation of phases of a gazoraspredeleniye
11. Nozzles
12. EBU engine
Violation of operation of the engine idling
The raised
turns of the single
course
1. Drive of management of supply of fuel
2. A chain of the sensor of temperature of cooling liquid
3. Idling regulator
4. Nozzles
5. EBU engine
6. Conditioner chain
7. A chain of the sensor of temperature of soaked-up air
8. Chain of the sensor of provision of a butterfly valve
The lowered
turns of the single
course
1. A chain of the sensor of temperature of cooling liquid
2. Idling regulator
3. Chain of the sensor of a mass consumption of air
4. Nozzles
5. EBU engine
The unstable
operation of the engine on
single to a course
1. Quality of fuel
2. A chain of the sensor of temperature of cooling liquid
3. Spark plugs
4. Regulator of pressure of fuel
5. Fuel pump
6. Toplivoprovoda
7. Idling regulator
8. A compression in engine cylinders
9. Piston rings
10. Corner of an advancing of ignition
11. Chain of the sensor of a mass consumption of air
12. Chain of the sensor of provision of a butterfly valve
Interruptions or
the insufficient
acceleration performance
engine
1. Coupling (a mechanical transmission)
2. Incomplete rastormazhivaniye of wheels
3. Quality of fuel
4. Spark plugs
5. Corner of an advancing of ignition
6. A compression in engine cylinders
7. Chain of the sensor of provision of a butterfly valve
8. Chain of the sensor of a mass consumption of air
9. A chain of the sensor of temperature of cooling liquid
10. A chain of the sensor of temperature of soaked-up air
11. Chain of the sensor of concentration of oxygen
12. Regulator of pressure of fuel
13. Installation of phases of a gazoraspredeleniye
14. Fuel pump
15. Nozzles
16. EBU engine
Violation of operation of the engine at car movement
Breakthroughs and failures
at movement
car
1. Regulator of pressure of fuel
2. Spark plugs
3. Quality of fuel
4. Nozzles
5. EBU engine
6. A chain of the sensor of temperature of cooling liquid
Detonation in
cylinders
engine
1. A chain of the sensor of temperature of soaked-up air
2. Idling regulator
3. Ignition system
4. EBU engine

Table 2.4
Possible malfunctions of the engine and order of their definition
Malfunction signs
Procedure for test
The engine глохнет soon after start
1. Quality of fuel
2. Regulator of pressure of fuel
3. Fuel pump
4. Toplivoprovoda
5. Idling regulator
6. Chain of the sensor of absolute pressure
7. A chain of the sensor of temperature of cooling liquid
8. Nozzles
9. EBU engine
10. Sensor of provision of a cranked shaft
The engine глохнет by pressing an accelerator pedal
1. Chain of the sensor of absolute pressure
2. Chain of the sensor of provision of a butterfly valve
3. Spark plugs
4. Regulator of pressure of fuel
5. Toplivoprovoda
6. Nozzles
7. EBU of a control system of the engine
8. Sensor of provision of a cranked shaft
The engine глохнет at an otpuskaniye of a pedal of an accelerator
1. Idling regulator
2. Chain of the sensor of absolute pressure
3. EBU engine
4. Sensor of provision of a cranked shaft
The engine глохнет at inclusion
conditioner
1. Conditioner chain
2. Idling regulator
3. EBU engine
4. Sensor of provision of a cranked shaft
The increased fuel consumption
1. Leakage of fuel
2. Regulator of pressure of fuel
3. Drive of management of supply of fuel
4. Coupling (a mechanical transmission)
5. Wheels подтормаживаются at the released pedal of brakes
6. Spark plugs
7. A compression in engine cylinders
8. Piston rings
9. Engine GBTs valve
10. Corner of an advancing of ignition
11. Regulator
12. Chain of the sensor of temperature
cooling liquid
13. Chain of the sensor of situation
butterfly valve
14. Chain of the sensor of absolute pressure
15. Conditioner chain
16. Chain of the sensor of concentration of oxygen
17. A chain of the sensor of temperature of soaked-up air
The engine overheats
1. Leakage of cooling liquid
2. Electrofan of system of cooling of the engine
3. Sensor of turning on of the electrofan
4. Radiator and radiator stopper
5. Thermostat
6. Belt of a drive of GRM
7. Water pump 8. Spark plugs
9. Oil pump
10. Head of the block of cylinders
11. Block of cylinders
12. The sensor of the index of temperature of cooling liquid
13. Corner of an advancing of ignition
The engine badly gets warm
1. Electrofan of system of cooling of the engine
2. Radiator and radiator stopper
3. Sensor of the index of temperature
cooling liquid
The complicated fuelling.
Modulation and spill of fuel
1. Drainage hose of a bulk mouth of a fuel tank
2. Adsorber
3. Valve of interruption of supply of fuel

In the presence of one of the following malfunctions: the engine is not started up, the engine unstably idles or the engine does not possess sufficient acceleration performance – first of all check the following.
1. Serviceability of chains of power supply:
– storage battery;
– fusible inserts;
– safety locks.
2. Connections with "mass" of a body of the car.
3. Supply of fuel:
– топливопроводы;
– fuel filter;
– fuel pump.
4. Ignition system:
– spark plugs;
– wires of a high voltage;
– ignition coil.
5. System of decrease in toxicity of the fulfilled gases:
– system of compulsory ventilation of a case;
– leakage of depression.
6. In addition check:
– corner of an advancing of ignition;
– frequency of rotation of a cranked shaft of the engine idling.
Malfunctions of a control system with system of the distributed injection of fuel often are connected by the engine with contact violation in connections of wires. Surely check all connections of wires and be convinced of their reliability.

Control values for check
Engine capacity, l
Value
Check conditions
Frequency of rotation of a cranked shaft idling, mines -1
1,3; 1,5; 1; 6
700±100
At the switched-on or switched-off conditioner (at neutral position of the lever of gear shifting or the position "N" of the lever of the selector for
1,1
850±100
cars with an automatic transmission) At the switched-on or switched-off conditioner (at neutral position of the lever of gear shifting or the position "N" of the lever of the selector for cars with an automatic transmission)
Corner of an advancing of ignition idling, hail
1,3; 1,5; 1,6
5±5
At the switched-on or switched-off conditioner (at neutral position of the lever of gear shifting or the position "N" of the lever of the selector for
1,1
8±5
cars with an automatic transmission) At the switched-on or switched-off conditioner (at neutral position of the lever of gear shifting or the position "N" of the lever of the selector for cars with an automatic transmission)

Removal, check of a technical condition and installation of elements of a control system by the engine 

PREVENTION
For removal of the electronic control unit (EBU) previously remove the bottom facing of the dashboard, operating carefully not to scratch the dashboard.
If the control lamp of malfunction of a control system burns with the engine and codes of malfunctions are stored in memory of EBU, check codes by means of the diagnostic HI-SCAN device and write down, then disconnect  a wire from the negative plug of the storage battery.


Electronic control unit engine
Removal
Establish a steering column in the top situation.
Remove an upholstery of a door and face facing of the dashboard.

Fig. 2.184. Removal of a cover of the block of safety locks


Uncover the block of safety locks (fig. 2.184) .

Fig. 2.185. Screws (are designated by the shooters directed down) and bolts (are designated by the shooters directed up) of fastening of EBU (on выноске – the contact socket of system of self-diagnostics)


Unscrew two bolts and two screws of fastening of EBU (fig. 2.185) .

Fig. 2.186. Contact socket of system of self-diagnostics


Separate the data line socket, disconnect a cable of a drive of the lock of a cowl and remove the bottom facing of the dashboard (fig. 2.186) .

Fig. 2.187. EBU of a control system of the engine


Remove EBU (fig. 2.187) .
Installation carry out as it should be, the return to removal.

Check of a technical condition (check of frequency of rotation of a cranked shaft of the engine idling)
Check conditions:
– the temperature of cooling liquid should be within 80–85 °C;
– lighting, the electrofan of system of cooling of the engine and all auxiliaries should be switched off;

       NOTE
Before check of idling check serviceability of spark plugs, nozzles, an idling regulator, a compression in engine cylinders.

– the lever of gear shifting is established in neutral situation (on cars with an automatic transmission the lever of the selector is established in the situation "R" or "N");
– the steering wheel is established in the situation corresponding to rectilinear movement (only for cars with the amplifier of a steering).
Attach a control tachometer to primary winding of the coil of ignition (follow indications of the maintenance instruction of a tachometer) or attach the HI-SCAN device to the contact socket of a data line.
Start up the engine and let's to it work idling.
Increase frequency of rotation of a cranked shaft to 2000–3000 mines -1 for the period of more than 5 with, then let's work to the engine idling within 2 minutes.
Check on a tachometer frequency of rotation of a cranked shaft idling.
Frequency of rotation  of a cranked shaft  idling should correspond to control values for the check, given above.

Fuel pump
Switch off ignition.
Check operation of the fuel pump, having submitted tension of the storage battery on conclusions of the socket of the electric motor of the pump.

       NOTE
The fuel pump is established in a fuel tank therefore noise from it is audible only at the removed stopper of a bulk mouth of a tank.


Fig. 2.188. Pressure stock-taking in a bringing fuel hose


Having compressed a hand bringing fuel hose, be convinced that it is under pressure. (fig. 2.188) .
Check pressure of fuel.

Fig. 2.189. The hatch for access to the fuel pump from car salon (the back seat is combined)


Combine a back of a back seat, then cast away forward the combined back seat (fig. 2.189) .

Fig. 2.190. The hatch (is open) for access to the fuel pump


Screw-driver open a cover of the hatch of the fuel pump in the car bottom under a back seat (fig. 2.190) .
For pressure dumping in fuel pipelines and hoses start up the engine at the disconnected fuel pump and wait, when the engine will stop.
Disconnect a wire from the negative plug («–») the storage battery and connect the contact socket of the fuel pump.

       NOTE
Before disconnecting the pipeline and a hose of supply of fuel, it is necessary to dump pressure of fuel to exclude its emission.

Fig. 2.191. Manometer connection for measurement of pressure of fuel in system


Attach a control manometer (fig. 2.191) to the fuel filter by means of an adapter (number according to the catalog of spare parts and adaptations 09353-24000, 09353-24100, 09353-38000). Reliably tighten the union of fastening of an adapter of a manometer.
Attach a wire to the negative plug («–») the storage battery.
Turn on the fuel pump, having submitted tension of the storage battery on conclusions of the contact socket of the pump.
After creation of pressure of fuel be convinced of absence of leakages of fuel through a control manometer and its connections.
Start up the engine and leave it to idle.
Check pressure of supply of fuel.
Nominal rate of 350 kPas (3,5 kgfs/cm 2 ).
If pressure of supply of fuel does not correspond to norm, define the reason and eliminate malfunction, as shown below.
Stop the engine and track pressure of fuel on a control manometer: pressure should keep approximately within 5 minutes. If pressure falls, define speed of falling. Define and eliminate the pressure drop reason.
Dump pressure in топливопроводе.
Disconnect a hose and a control manometer.

PREVENTION
At a detachment of a hose cover the union with a rag to exclude fuel emission as топливопровод is under residual pressure.

Replace a sealing ring of the union of a hose.
Attach a fuel hose to a branch pipe of the fuel pump and tighten the union.
Be convinced of absence of leakages of fuel.

Replacement of the fuel filter and fuel pump
Dump pressure in fuel pipelines and hoses, having executed the following.
Remove a pillow of a back seat and separate the contact socket of the fuel pump.
Start up the engine, wait, when it will stop, switch off ignition.

Fig. 2.192. A wire detachment from the negative plug of the storage battery


Disconnect a wire from the negative plug («–») the storage battery (fig. 2.192) .
Connect the contact socket of the fuel pump.
Unscrew bolts with an ear, holding from a provorachivaniye of a nut of fastening of the fuel filter.

PREVENTION
Cover the fuel filter with a napkin for prevention of an effluence of the fuel which has remained in it.

Unscrew bolts of fastening of the fuel filter and take out the filter from a fastening collar.
After replacement of the fuel filter be convinced of absence of leakages of fuel.

Fig. 2.193. The hatch (is open) for access to the fuel pump


Screw-driver open a cover of the hatch of the fuel pump in the car bottom under a back seat (fig. 2.193) .

Replacement of the limiter of a modulation (the on-off valve) 

Fig. 2.194. Modulation limiter (the on-off valve)


Disconnect a branch hose паров fuels (fig. 2.194) , then remove the modulation limiter.

Fig. 2.195. Adjusting position of the limiter of a modulation


Attach the modulation limiter to топливопроводам in the correct situation (fig. 2.195) .

Replacement of the sensor of the index of level of fuel
Remove a stopper of a bulk mouth of a fuel tank for pressure dumping in a tank.

Fig. 2.196. Sensor of the index of level of fuel and fuel pump


Unscrew screws of fastening of the sensor of the index of level of fuel and take out the sensor from a tank (fig. 2.196) .

Check of a control system by the engine 
Malfunction of elements of a control system of the engine with the distributed injection of fuel (sensors, EBU, nozzles etc.) causes interruption of supply of fuel or its insufficient giving in engine cylinders at various modes of its work. The following malfunctions are thus possible.
1. The engine is started up hardly or not started up.
2. The engine unstably idles.
3. Road performance of the car worsens.
In the presence of one of the specified signs first of all execute usual diagnostic procedure, including check of the main systems of the engine. After that check elements of a control system of the engine by means of the HI-SCAN device (at service stations of Hyundai cars).
The sensor of concentration of oxygen with heating is connected to EBU ekranirovanny wires, screens are connected to "mass" of a body for protection against hindrances against system of ignition and a radio noise. At damage of screens replace wires.
At check of loading of the generator do not disconnect a wire from the positive plug («+») the storage battery to prevent EBU damage by the increased tension.

       NOTES
Before removal or installation of any of elements of system consider codes of malfunctions,  then disconnect a wire from the negative plug («-») the storage battery.
Before a wire detachment from the negative plug of the storage battery switch off ignition. The detachment or connection of wires of the battery at the working engine or the included ignition can cause damage of the electronic control unit.

At a charging of the storage battery from the external power supply disconnect a wire from the negative plug of the storage battery not to damage EBU.

Control lamp of malfunction of a control system of the engine (cars with the European onboard system of diagnostics)

Fig. 2.197. A control lamp of malfunction of a control system of the engine (cars with the European onboard system of diagnostics)


Fig. 2.198. A control lamp of malfunction of a control system of the engine (cars without the European onboard system of diagnostics)


In the presence of malfunction in a control system of the engine the control lamp (fig. 2.197 and 2.198) lights up . If the found malfunction is not shown after three consecutive cycles of operation of the engine, the lamp dies away. The lamp lights up at once after ignition inclusion (without engine start-up) that points to its serviceability.
Conditions, at creation of any of which the control lamp lights up:
– catalytic converter is faulty;
– the engine power supply system is faulty;
– the sensor of absolute pressure is faulty;
–  the sensor of temperature  of soaked-up air is faulty;
–  the sensor of temperature  of cooling liquid is faulty;
– the sensor of provision of a butterfly valve is faulty;
– the top sensor of concentration of oxygen is faulty;
– the heating of the bottom sensor of concentration of oxygen is faulty;
– the bottom sensor of concentration of oxygen is faulty;
– the heating of the top sensor of concentration of oxygen is faulty;
– nozzles are faulty;
– admissions of ignition of a mix;
– the sensor of provision of a cranked shaft is faulty;
– the sensor of provision of a camshaft is faulty;
– the catching system паров fuels is faulty;
– the sensor of speed of movement of the car is faulty;
– the idling regulator is faulty;
– power supply chain is faulty;
– the control unit the engine is faulty;
– violation in the coding of a mechanical box of transfers / an automatic transmission;
– the acceleration sensor is faulty;
– violation of a signal of request for inclusion of a control lamp;
– the power cascade of system of ignition is faulty.

Control lamp of malfunction of a control system of the engine (cars without the European onboard system of diagnostics)
Lighting up, the control lamp warns the driver about malfunction existence in a control system of the engine. However, if the found malfunction is not shown after three consecutive cycles of operation of the engine, the lamp dies away. The lamp lights up right after ignition inclusion (without engine start-up) that points to its serviceability.
Conditions, at creation of any of which the control lamp lights up:
– the warmed-up sensor of concentration of oxygen is faulty;
– the sensor of absolute pressure is faulty;
– the sensor of provision of a butterfly valve is faulty;
– the sensor of temperature  of cooling liquid is faulty;
– the idling regulator is faulty;
– nozzles are faulty;
– the control unit the engine is faulty.
For check be convinced that after ignition inclusion the lamp burns approximately during 5 with, and then dies away.
If the lamp does not light up, the possible reason is the wire breakage, a peregoraniye of a safety lock or the lamp.

Self-diagnostics system
The control unit the engine gives operating commands for actuation mechanisms and processes signals from sensors (some teams and signals constantly, others – only under certain conditions). If EBU finds a deviation from norm, he writes down a diagnostic code of malfunction and gives out a signal on the contact socket of a data line. The result of diagnostics is displayed by fire of a control lamp of malfunction or on the HI-SCAN device. Diagnostic codes of malfunction are stored in memory of EBU until on it tension from the storage battery moves. Codes of malfunction are removed at a detachment of the storage battery or separation of the EBU contact socket or are erased by means of the diagnostic HI-SCAN device.

       NOTE
At a detachment of the contact socket from any sensor at the included ignition in memory of EBU the malfunction code registers. In this case it is necessary to remove a malfunction code, having disconnected a wire from the negative plug («–») the storage battery.

Work of onboard system of diagnostics
1. If the same malfunction is found and remains during two cycles of a trip, the control lamp of malfunction of a control system of the engine automatically lights up.
2. The control lamp of malfunction of a control system of the engine dies away, if during three cycles of in a row malfunction are not found.
3. The diagnostic code of malfunction (DTC) registers in memory of EBU at failure detection after two cycles in a row. The control lamp of malfunction of a control system of the engine lights up at failure detection in the second cycle.
At detection of the admission of ignition of a mix the malfunction code, and a control lamp of malfunction of a control system of the engine registers lights up right after failure detection.
4. The malfunction code automatically is removed from memory of EBU if the same malfunction is not found during 40 cycles.

       NOTES
The cycle of warming up of the engine corresponds to sufficient time of its work during which the temperature of cooling liquid raises from the moment of engine start-up not less than on 4,5 °C and reaches value not below 70 °C.
The cycle of a trip includes start-up of the engine and car movement after the beginning of adjustment of structure of a mix on signals of sensors of concentration of oxygen.

Codes of malfunctions are given in tab. 2.5.

Table 2.5
Diagnostic codes (codes of malfunctions) control systems of the engine
code No.
Malfunction description
Record
впамять
ЭБУ
Control lamp
systems
diagnostics
Cars with the European onboard system of diagnostics
P0030
Wrong supply voltage of a heater
oxygen sensor (number of cylinders 1, sensor 1)
About
About
P0031
Chain of a heating element of the sensor of concentration of oxygen - the bottom level (a number of cylinders 1, the sensor 1)
About
About
P0032
Chain of a heating element of the sensor of concentration of oxygen - the top level (a number of cylinders 1, the sensor 1)
About
About
P0036
Malfunction of a chain of a heating element of the sensor of concentration of oxygen (row of cylinders 1,
sensor 2)
About
X
P0037
Chain of a heating element of the sensor of concentration of oxygen - the bottom level (a number of cylinders 1, the sensor 2)
About
About
P0038
Chain of a heating element of the sensor of concentration of oxygen - the top level (a number of cylinders 1, the sensor 2)
About
About
P0106
Discrepancy of a signal of the sensor of absolute pressure to the current value
About
About
P0107
Check of the bottom level of a signal of the sensor of absolute pressure
About
About
P0108
Check of the top level of a signal of the sensor of absolute pressure
About
About
P0112
Low level of a signal of the sensor of temperature of soaked-up air
About
About
P0113
High level of a signal of the sensor of temperature of soaked-up air
About
About
P0116
Range of measurements of the sensor of temperature of work cooling liquid/violation
About
About
P0117
Low level of a signal of the sensor of temperature of cooling liquid
About
About
P0118
High level of a signal of the sensor of temperature of cooling liquid
About
About
P0121
Range of measurements of the sensor of situation throttle заслонки / work violation
About
X
P0122
Low level of a signal of the sensor of provision of a butterfly valve
About
About
P0123
High level of a signal of the sensor of provision of a butterfly valve
About
About
P0130
Malfunction of a chain of the sensor of concentration of oxygen (number of cylinders 1, sensor 1)
About
About
P0131
Low level of a signal of the warmed sensor of concentration of oxygen (a number of cylinders 1, the sensor 1)
About
About
P0132
High level of a signal of the warmed sensor of concentration of oxygen (a number of cylinders 1, the sensor 1)
About
About
P0133
Increased time of reaction of the warmed sensor of concentration of oxygen (a number of cylinders 1, the sensor 1)
About
About
P0134
The sensor of concentration of oxygen does not operate
About
About
P0136
Malfunction of a chain of the sensor of concentration of oxygen (number of cylinders 1, sensor 2)
About
About
P0137
Low level of a signal of the warmed sensor of concentration of oxygen (a number of cylinders 1, the sensor 2)
About
About
P0138
High level of a signal of the warmed sensor of concentration of oxygen (a number of cylinders 1, the sensor 2)
About
About
P0140
Check of a range of measurements of the sensor of concentration of oxygen
About
About
P0171
Mix repauperization (number of cylinders 1)
About
About
P0172
Mix reenrichment (number of cylinders 1)
About
About
P0230
Malfunction of a chain of the fuel pump
About
X
P0261
Low level of an operating signal on a nozzle (the 1st cylinder)
About
About
P0264
Low level of an operating signal on a nozzle (the 2nd cylinder)
About
About
P0267
Low level of an operating signal on a nozzle (the 3rd cylinder)
About
About
P0270
Low level of an operating signal on a nozzle (the 4th cylinder)
About
About
P0262
High level of an operating signal on a nozzle (the 1st cylinder)
About
About
P0265
High level of an operating signal on a nozzle (the 2nd cylinder)
About
About
P0268
High level of an operating signal on a nozzle (the 3rd cylinder)
About
About
P0271
High level of an operating signal on a nozzle (the 4th cylinder)
About
About
P0300
Casual admissions of ignition of a mix
About
About
P0301
Admissions of ignition of a mix (the 1st cylinder)
About
About
P0302
Admissions of ignition of a mix (the 2nd cylinder)
About
About
P0303
Admissions of ignition of a mix (the 3rd cylinder)
About
About
P0304
Admissions of ignition of a mix (the 4th cylinder)
About
About
P0325
Malfunction of a chain of the sensor of a detonation (number of cylinders 1)
About
X
P0335
Malfunction of a chain of the sensor of provision of a cranked shaft
About
About
P0336
Signal of the sensor of provision of a cranked shaft outside the limits of the admission
About
About
P0340
Malfunction of a chain of the sensor of provision of a camshaft
About
About
P0420
Decrease in efficiency of the main catalytic converter (number of cylinders 1)
About
About
P0444
Break in a chain of the electromagnetic valve of a purge of an adsorber
About
About
P0445
Short circuit in a chain of the electromagnetic valve of a purge of an adsorber
About
About
P0501
Range of measurement of the sensor of speed work movement/violation
About
About
P0506
Low frequency of rotation of a cranked shaft of the engine idling
About
About
P0507
High frequency of rotation of a cranked shaft of the engine idling
About
About
P0562
Low level of tension of an onboard network of the car
About
About
P0563
High level of tension of an onboard network of the car
About
About
P0605
Error of the constant EBU STORAGE
About
X
P1307
Malfunction of the sensor of acceleration
About
About
P1308
Low level of a signal of the sensor of acceleration
About
About
P1309
High level of a signal of the sensor of acceleration
About
About
P1505
Low level of a signal on a winding of No. of 1 regulator of idling
About
About
P1506
High level of a signal on a winding of No. of 1 regulator of idling
About
About
P1507
Low level of a signal on a winding of No. 2 regulators of idling
About
About
P1508
High level of a signal on a winding of No. 2 regulators of idling
About
About
P1586
Discrepancy of a chain of a coding signal
About
About
P1690
Malfunction of an immobilizer of SMATRA
About
X
P1691
Malfunction of an immobilizer of Antena
About
X
P1693
Malfunction of a transponder of an immobilizer
About
X
P1694
Error of the control unit engine
About
X
P1695
Error of ES ROM (electricly erased ROM)
About
X
Cars without the European onboard system of diagnostics
P0031
Chain of a heating element of the oxygen sensor, bottom level (number of cylinders 1, sensor 1)
About
X
P0032
Chain of a heating element of the oxygen sensor, top level (number of cylinders 1, sensor 1)
About
X
P0107
Check of the bottom level of a signal of the sensor of absolute pressure
About
About
P0108
Check of the top level of a signal of the sensor of absolute pressure
About
About
P0112
Low level of a signal of the sensor of temperature of soaked-up air
About
X
P0113
High level of a signal of the sensor of temperature
soaked-up air
About
X
P0116
Range of measurements of the sensor of temperature of work cooling liquid/violation
About
X
P0117
Low level of a signal of the sensor of temperature of cooling liquid
About
About
About
About
P0118
High level of a signal of the sensor of temperature of cooling liquid
About
X
P0121
Range of measurements of the sensor of situation throttle заслонки / work violation
About
About
P0122
Low level of a signal of the sensor of provision of a butterfly valve
About
About
P0123
High level of a signal of the sensor of provision of a butterfly valve
About
X
P0130
Malfunction of a chain of the oxygen sensor (number of cylinders 1, sensor 1)
About
X
P0131
Low level of a signal of the warmed oxygen sensor (a number of cylinders 1, the sensor 1)
About
X
P0132
High level of a signal of the warmed oxygen sensor (a number of cylinders 1, the sensor 1)
About
X
P0133
Increased time of reaction of the warmed oxygen sensor (a number of cylinders 1, the sensor 1)
About
X
P0134
The sensor of concentration of oxygen does not operate
About
X
P0171
Mix repauperization (number of cylinders 1)
About
X
P0172
Mix reenrichment (number of cylinders 1)
About
X
P0230
Malfunction of a chain of the fuel pump
About
About
P0261
Low level of an operating signal on a nozzle (the 1st cylinder)
About
About
P0264
Low level of an operating signal on a nozzle (the 2nd cylinder)
About
About
P0267
Low level of an operating signal on a nozzle (the 3rd cylinder)
About
About
P0270
Low level of an operating signal on a nozzle (the 4th cylinder)
About
About
P0262
High level of an operating signal on a nozzle (the 1st cylinder)
About
About
P0265
High level of an operating signal on a nozzle (the 2nd cylinder)
About
About
P0268
High level of an operating signal on a nozzle (the 3rd cylinder)

About
About

About
X
P0271
High level of an operating signal on a nozzle (the 4th cylinder)
About
X
P0325
Malfunction of a chain of the sensor of a detonation (number of cylinders 1)
About
X
P0335
Malfunction of a chain of the sensor of provision of a cranked shaft
About
X
P0336
Signal of the sensor of provision of a cranked shaft outside the limits of the admission
About
X
P0340
Malfunction of a chain of the sensor of provision of a camshaft
About
X
P0501
Range of measurement of the sensor of speed work movement/violation
About
X
P0506
Low frequency of rotation of a cranked shaft of the engine idling
About
X
P0507
High frequency of rotation of a cranked shaft of the engine idling
About
X
P0562
Low level of tension of an onboard network of the car
About
X
P0563
High level of tension of an onboard network of the car
About
X
P0605
Error of the constant EBU STORAGE
About
X
P1505
Low level of a signal on a winding of No. of 1 regulator of idling
About
About
P1506
High level of a signal on a winding of No. of 1 regulator of idling
About
About
P1507
Low level of a signal on a winding of No. 2 regulators of idling
About
About
P1508
High level of a signal on a winding of No. 2 regulators of idling
About
About
P1586
Discrepancy of a chain of a coding signal
About
X
P1690
Malfunction of an immobilizer of SMATRA
About
X
P1691
Malfunction of an immobilizer of Antena
About
X
P1693
Malfunction of a transponder of an immobilizer
About
X
P1694
Error of the control unit engine
About
X
P1695
Malfunction of ES ROM (electricly erased ROM)
About
X

Arrangement of elements of a control system of the engine

Fig. 2.199. Arrangement of elements of a control system engine in working volume of 1,1 l: 1–sensor of absolute pressure (MAP); 2–the sensor of temperature of soaked-up air (IAT); 3–the sensor of temperature of cooling liquid (eats); 4–sensor of provision of a butterfly valve (TPS); 5–sensor of provision of a camshaft (SMR); 6–sensor of provision of a cranked shaft (SKR); 7–the warmed-up sensor of concentration of oxygen (HO2S); 8–nozzle; 9–regulator of idling (ISA); 10-sensor of speed of movement of the car; 11-detonation sensor; 14-relay of turning on of the conditioner; 15-electromagnetic valve of a purge of an adsorber (PCSV); 16-main relay of a food of system of injection of fuel; 17-ignition coil; 19-acceleration sensor


Fig. 2.200. Arrangement of elements of a control system engine in working volume of 1,3 l: 1–sensor of absolute pressure (MAP); 2–the sensor of temperature of soaked-up air (IAT); 3–the sensor of temperature of cooling liquid (eats); 4–sensor of provision of a butterfly valve (TPS); 5–sensor of provision of a camshaft (SMR); 6–sensor of provision of a cranked shaft (SKR); 7–the warmed-up sensor of concentration of oxygen; 8–nozzle; 9–regulator of idling (ISA); 10-sensor of speed of movement of the car; 11-detonation sensor; 14-relay of turning on of the conditioner; 15-electromagnetic valve of a purge of an adsorber (PCSV); 16-main relay of a food of system of injection of fuel; 17-ignition coil; 19-acceleration sensor


Fig. 2.201. Arrangement of elements of a control system engine in working volume of 1,5 and 1,6 l: 1–sensor of absolute pressure (MAP); 2–the sensor of temperature of soaked-up air (IAT); 3–the sensor of temperature of cooling liquid (eats); 4–sensor of provision of a butterfly valve (TPS); 5–sensor of provision of a camshaft (SMR); 6–sensor of provision of a cranked shaft (SKR); 7–the warmed-up sensor of concentration of oxygen; 8–nozzle; 9–regulator of idling (ISA); 10-sensor of speed of movement of the car; 11-detonation sensor; 14-relay of turning on of the conditioner; 15-electromagnetic valve of a purge of an adsorber (PCSV); 16-main relay of a food of system of injection of fuel; 17-ignition coil; 19-acceleration sensor


Fig. 2.202. An arrangement of elements of a control system of the engine in car salon: 12-ignition switch; 13-electronic control unit engine (ESM); 18-contact socket of a data line


The arrangement of elements of a control system is shown by the engine on fig. 2.199, 2.200, 2.201, 2.202 .

       NOTE
For all drawings identical digital designation of elements of a control system by the engine, having an identical functional purpose is accepted.

Elements of a control system of the engine

Fig. 2.203. Sensors of a control system of the engine: 1–sensor of absolute pressure (MAP); 2–the sensor of temperature of soaked-up air (IAT); 3–sensor of provision of a butterfly valve (TPS)


Fig. 2.204. The sensor of temperature of cooling liquid


Fig. 2.205. Sensor of provision of a camshaft and ignition coil


Fig. 2.206. Sensor of provision of a cranked shaft


Fig. 2.208. Detonation sensor


Fig. 2.207. Sensor of concentration of oxygen


Fig. 2.209. Electronic control unit engine


Fig. 2.210. Relay of a control system of the engine: 14-relay of turning on of the conditioner; 16-main relay of a food of system of injection of fuel


Fig. 2.211. Nozzles


Fig. 2.212. Idling regulator


Fig. 2.213. Acceleration sensor


Fig. 2.214. Sensor of speed of movement of the car


Fig. 2.215. Numbering of conclusions of the EBU contact socket


Elements of a control system are shown by the engine on fig. 2.203, 2.204, 2.205, 2.206, 2.207, 2.208, 2.209, 2.210, 2.211, 2.212, 2.213, 2.214, 2.215 .

Sensor of absolute pressure
The sensor of absolute pressure (MAP) is executed in the form of the variable resistor sensitive to change of pressure. The sensor measures changes of pressure in the inlet pipeline depending on change of loading and frequency of rotation of a cranked shaft of the engine and will transform them to tension of a target signal. The sensor measures also barometric pressure at the moment of start-up of the engine and under some conditions provides EBU possibility automatically to be adjusted on different values of height above sea level. EBU submits on the sensor supply voltage 5 In and processes the signals of the sensor transferred on a chains of a signal transmission. The sensor is connected to "weight" via the built-in variable resistor. Depending on a signal of the EBU sensor regulates duration of supply of fuel and a corner of an advancing of ignition.
The control lamp of malfunction of a control system of the engine lights up or on the HI-SCAN device are displayed
diagnostic codes of malfunctions in the following cases.
1. During 0,1 with the ambassador of inclusion of ignition pressure in the inlet pipeline less than 118 Mbar.
2. At frequency of rotation of a cranked shaft 1980 mines -1 pressure in the inlet pipeline less than 118 Mbar are lower.
3. At the released pedal of an accelerator pressure in the inlet pipeline not less than 986 Mbar, and frequency of rotation of a cranked shaft are not lower than 2400 mines -1 (as though the car moved down on a bias).
Check.

Fig. 2.216. Scheme of connections with EBU of the sensor of absolute pressure


Check tension on conclusions «1» and «4» contact sockets of the sensor of absolute pressure (fig. 2.216) .
Conclusion «4» – "mass" of the sensor of absolute pressure.
Conclusion «1» – an exit of the sensor of absolute pressure.
Engine condition  Current, And
Ignition is included..... 4–5
Idling................. 1,14±0,4
At a tension deviation from norm replace the sensor of absolute pressure.

The sensor of temperature of soaked-up air
The sensor of temperature of the soaked-up air (IAT), built in the sensor of absolute pressure, is the sensor of termistorny type measuring air temperature on an admission of the engine. According to information on air temperature from the EBU sensor regulates amount of injected fuel.
The control lamp of malfunction of a control system of the engine lights up or on the HI-SCAN device diagnostic codes of malfunctions in a case when  air temperature  on  an admission  of the engine  is lower–40 are deduced or +120 °C are higher.

Fig. 2.217. The scheme of connections of the sensor of temperature of soaked-up air with EBU


Check. A multimeter check resistance of the sensor of temperature of soaked-up air on conclusions «3» and «4» (fig. 2.217) .
At the included ignition:
Air temperature, °C  Resistance, kiloohm
04................ 5–7,5
20................ 2,0–3,0
40................ 0,7–1,6
80................ 0,2–0,4
At a resistance deviation from norm replace the sensor of temperature of soaked-up air.

The sensor of temperature of cooling liquid

Fig. 2.218. The sensor of temperature of cooling liquid


The sensor of temperature of cooling liquid is shown on fig. 2.218 .

Fig. 2.219. The scheme of connections of the sensor of temperature of cooling liquid with EBU (engines in working volume 1,3; 1,5 and 1,6 l)


Fig. 2.220. The scheme of connections of the sensor of temperature of cooling liquid with EBU (engines in working volume of 1,1 l)


The sensor of temperature of cooling liquid is established in the pipeline of cooling liquid on a head of the block of cylinders. It takes temperature of cooling liquid and gives out a signal on the control unit the engine. The sensor is executed in the form of a termistor sensitive to change of temperature. Electric resistance of the sensor decreases with temperature increase. EBU determines temperature of cooling liquid by value of tension of a signal of the sensor and establishes optimum enrichment of a toplivovozdushny mix at engine warming up (fig. 2.219, 2.220) .
Check. Remove the sensor of temperature of cooling liquid from the inlet pipeline.

Fig. 2.221. Check of resistance of the sensor of temperature of cooling liquid


Check resistance of the sensor, having shipped its sensitive element in hot water (fig. 2.221) .
Temperature, °C  Resistance, kiloohm
– 30........ 22,22–31,78
– 10........ 8,16–10,74
0............ 5,18–6,60
20.......... 2,27–2,73
40.......... 1,059–1,281
60.......... 0,538–0,650
80.......... 0,298–0,322
90.......... 0,219–0,243
At a resistance deviation from norm replace the sensor.
Installation. Put on a carving part of the sensor LOCTITE 962T hermetic or similar.
Wrap the sensor of temperature of cooling liquid and tighten it the moment
15–20 N · m.
Reliably connect the contact socket of wires of the sensor.

Sensor of provision of a butterfly valve

Fig. 2.222. Sensor of provision of a butterfly valve


The sensor of provision of a butterfly valve is shown on fig. 2.222 .
The sensor of provision of a butterfly valve is executed on the variable resistor which rotates with a butterfly valve axis, measuring a corner of its opening. Rotation of an axis of a zaslonka causes change of tension of a signal of the sensor by which the control unit determines by the engine extent of opening of a butterfly valve.
1. Information from the sensor of provision of a butterfly valve is important for management of an automatic transmission. Malfunction of the sensor can cause breakthroughs at gear shifting and other violations of work of an automatic transmission.
2. At violation of operation of the engine idling or deterioration of dynamics of dispersal check connection of the contact socket of the sensor. At bad connection of the contact socket of the sensor the data deduced by the HI-SCAN device, can indicate absence of transition to an idling mode at the released pedal of an accelerator. It will lead to violation of operation of the engine idling and to deterioration of dynamics of dispersal.
3. At the included ignition tension of a signal from the sensor is lower 0,1 In or above 4,7 In leads to fire of a control lamp.
Check. Separate the contact socket of the sensor of provision of a butterfly valve.

Fig. 2.223. Scheme of connections with EBU of the sensor of provision of a butterfly valve


Check resistance on contacts «2» ("mass" of the sensor) and «3» (a sensor food) the contact socket of the sensor (fig. 2.223) .
Nominal rate of resistance of 0,7-3,0 kiloohms.

Fig. 2.224. The scheme of connections at check of the sensor of provision of a butterfly valve


Attach an analog ohmmeter to contacts «2» ("mass" of the sensor) and «1» (a sensor signal) the contact socket of the sensor (fig. 2.224) .
Slowly moving a butterfly valve from the provision of idling to the provision of complete opening, watch smoothness of change of resistance in proportion to a corner of opening of a zaslonka.
At a resistance deviation from norm or its not smooth change replace the sensor of provision of a butterfly valve.
Moment of an inhaling of the sensor of provision of a butterfly valve of 1,5-2,5 N · m.

Sensor of provision of a camshaft

Fig. 2.225. Scheme of connections with EBU of the sensor of provision of a camshaft


The sensor of provision of a camshaft (SMR) defines VMT of a step of compression of the piston of the first cylinder. The signal of the sensor is used by the control unit the engine for definition of sequence of injection of fuel (fig. 2.225) .
At check of the sensor use tab. 2.6.

Table 2.6
Check of tension of a signal of the sensor of provision of a camshaft
Check conditions
Control values, In (Hz)
Idling
0-5 (5-8)
At frequency of rotation
cranked shaft of 3000 mines -1
0-5 (24-26)

Sensor of provision of a cranked shaft

Fig. 2.226. Sensor of provision of a cranked shaft of the engine


The sensor of provision of a cranked shaft of the engine is shown on fig. 2.226 .
The sensor of provision of a cranked shaft of the engine, consisting of a magnet and a winding, is established at a gear wreath of a flywheel. The control unit determines by the engine frequency of rotation and the provision of a cranked shaft by a sensor signal.
Check. Separate the contact socket of the sensor of provision of a cranked shaft of the engine.

Fig. 2.227. Scheme of connections with EBU of the sensor of provision of a cranked shaft (engines in working volume 1,3; 1,5 and 1,6 l)


Fig. 2.228. Scheme of connections with EBU of the sensor of provision of a cranked shaft (engines in working volume of 1,1 l)


Check resistance between contacts «1» and «2» (fig. 2.227 and 2.228) .
Nominal resistance makes 0,486–0,594 kiloohms at temperature of 20 °C.
If resistance falls outside the limits the specified interval, replace the sensor.
Adjusting gap of the sensor of provision of a cranked shaft of the engine of 0,5-1,5 mm. 
Moment of an inhaling of the sensor of provision of a cranked shaft of the engine of 9-11 N · m.

Sensor of concentration of oxygen (warmed)

Fig. 2.229. Sensor of concentration of oxygen


Fig. 2.230. The scheme of connections of the sensor of concentration of oxygen with EBU (engines in working volume 1,3; 1,5 and 1,6 l)


Fig. 2.231. The scheme of connections of the sensor of concentration of oxygen with EBU (engines in working volume of 1,1 l)


The warmed sensor of concentration of oxygen (fig. 2.229) measures the content of oxygen in the fulfilled gases and will transform the measured size to tension of a signal which (fig. 2.230 and 2.231) stands out on the control unit the engine . At enrichment of a toplivovozdushny mix tension of a signal of the warmed sensor is higher settlement makes about 800 мВ, and at poorer mix (the bigger content of oxygen in the fulfilled gases) – about 100 мВ. Using signals of the sensor, EBU operates injection of fuel so that to receive settlement structure of a toplivovozdushny mix.
At malfunction of the sensor toxicity of the fulfilled gases can sharply raise.
If the sensor is serviceable, but tension of its signal (tab. 2.7) does not correspond to norm, be convinced of lack of the following malfunctions of system of regulation of structure of a working mix:
– malfunction of nozzles;
– подсос air in the inlet pipeline;
– malfunction of the sensor of a mass consumption of air, the valve of a purge of an adsorber and the sensor of temperature of cooling liquid;
– malfunction of conducting.

 Table 2.7
Check of tension of a signal of the sensor of concentration of oxygen (at the heated-up engine)
Engine condition
Control value, мВ
Sharp dumping of frequency
Not above 200
rotations from 4000 mines -1
Sharp increase in frequency of a rashcheniye
600-1000

       NOTE
At a sharp otpuskaniye of a pedal of an accelerator after operation of the engine at frequency of rotation of a cranked shaft about 4000 mines -1 supply of fuel quickly stops and the HI-SCAN device shows values not above 200 мВ. By sharp pressing a pedal of an accelerator of the indication will pass to an interval 600–1000 мВ. At decrease in frequency of rotation to idling tension of a signal will fluctuate from 200 мВ to 600 мВ. In this case it is possible to consider the sensor serviceable.


Fig. 2.232. Nozzle


Fig. 2.233. The scheme of connections of nozzles with EBU


Nozzles (fig. 2.232) inject fuel on operating signals from the control unit the engine. The amount of fuel injected by a nozzle is defined by time during which on the electromagnetic valve of a nozzle operating tension (fig. 2.233) moves .
1. Insufficient pressure of fuel and leakage of fuel through nozzles can be the possible reasons of the complicated start-up of the hot engine.
2. If nozzles do not work at a prokruchivaniye of a cranked shaft of the engine with a starter, check, whether there are no following malfunctions:
– malfunction of a power-supply circuit of EBU or chain of connection with "weight";
– malfunction of the main relay of a control system of the engine;
– malfunction of the sensor  of provision  of a cranked shaft or sensor of provision of a camshaft.
3. If frequency of rotation of idling of the engine does not change at serial shutdown of nozzles, check on the corresponding cylinder the following:
– nozzles and their wires;
– spark plugs and wires of a high voltage;
– a compression in the cylinder.
4. If the system of injection is serviceable, but duration of injection does not correspond to norm, check, whether completely burns down a mix (serviceability of candles and the coil
ignitions, compression in engine cylinders etc.).
5. The control lamp of malfunction burns or on the HI-SCAN device the malfunction code is deduced at malfunction of a nozzle.
Check. Working capacity check by means of the HI-SCAN device:
– serially include nozzles;
– check duration of injection of fuel nozzles.

Fig. 2.234. Check of operability of a nozzle aurally by means of a stethoscope


It is possible to check working capacity aurally. For this purpose by means of a stethoscope hear to clicks of work of nozzles idling (fig. 2.234) . Be convinced that frequency of repetition of clicks raises with increase in frequency of rotation of a cranked shaft of the engine.

       NOTE
Listening carry out so that clicks were not transferred on a fuel stage from the next nozzle to an idle nozzle.


Fig. 2.235. Check of operability of a nozzle by a finger


In the absence of a stethoscope check work of nozzles, putting to them a finger (fig. 2.235) . If thus vibration is not felt, check the contact socket, a nozzle or receipt of an operating signal from the control unit the engine.

Fig. 2.236. Resistance check on nozzle conclusions


For resistance check on conclusions of a nozzle separate the contact socket of a nozzle and check resistance on its conclusions (fig. 2.236) .
The nominal rate makes (15,9±0,35) Ohm at temperature of 20 °C.
Connect  the contact socket of a nozzle.

Idling regulator

Fig. 2.237. Idling regulator


Fig. 2.238. Scheme of connections with EBU of a regulator of idling


The idling regulator (fig. 2.237) is equipped with two windings and (fig. 2.238) copes separate cascades of management of EBU . Depending on factor of filling of sequence of impulses balance of magnetic forces on both windings under the influence of which the electric motor of a regulator turns on different corners is created. The regulator of idling is established in the air channel executed parallel to the case of a butterfly valve.
Check. Separate the contact socket of a regulator of idling.
Check resistance between regulator conclusions.
Nominal resistance at measurement between conclusions «1» and «2» makes
10,5–14,0 Ohm, at measurement between conclusions «2» and «3» – 10–12 Ohm at 20 °C.
Connect the contact socket of a regulator of idling.

Sensor of speed of movement of the car

Fig. 2.239. Scheme of connections with EBU of the sensor of speed of movement of the car


The sensor of speed of movement of the car represents the sensor of the Hall established opposite to a target shaft of a transmission. The sensor will transform frequency of rotation of a shaft of a transmission to the pulse signal which is given out on the control unit by the engine (fig. 2.239) .
In the presence of break or short circuit in a chain of the sensor of speed of movement the engine can decay at car delay to a full stop.

Detonation sensor

Fig. 2.240. Detonation sensor


Fig. 2.241. The scheme of connections of the sensor of a detonation with EBU


The detonation sensor (fig. 2.240) is established on the block of cylinders. Vibration of the block of cylinders arising at a detonation is transferred in the form of pressure upon a piezoelectric element of the sensor. This vibrating pressure will be transformed to tension of the signal which is given out on the control unit by the engine (fig. 2.241) . The arising detonation chokes with a way of reduction of a corner of an advancing of ignition.

Fig. 2.242. Scheme of check of resistance of the sensor of a detonation


Check. Separate the contact socket of the sensor and check resistance between conclusions «1» and «2» (fig. 2.242) .
Nominal resistance – about 5 megohms at temperature of 20 °C.
If the ohmmeter shows chain existence, replace the detonation sensor.
Moment of an inhaling of the sensor of a detonation of 16-25 N · m.
Check capacity between conclusions «1» and «2».
Nominal resistance 800-1600 пФ.

Electronic control unit

Fig. 2.243. Electronic control unit


The electronic control unit is shown on fig. 2.243 .

Fig. 2.244. The scheme of connections of EBU with "weight"


Check connection of the electronic block of a control system by the engine with "weight" (fig. 2.244) .

Switch and conditioner relay

Fig. 2.245. Installation site of the relay of the conditioner


Fig. 2.246. Scheme of connections of the relay of the conditioner and EBU


At turning on of the conditioner tension of the storage battery from the conditioner switch on the control unit the engine (fig. 2.245) moves . Having received a signal of turning on of the conditioner, EBU gives out command for a regulator of idling and turns on the power transistor of system of ignition (fig. 2.246) . After that a food moves on a winding of the power relay of the conditioner which works and turns on the electromagnetic coupling of the compressor of the conditioner (see fig. 2.246 ).

Electromagnetic valve of a purge of an adsorber 

Fig. 2.247. Electromagnetic valve of a purge of an adsorber


Fig. 2.248. Scheme of connections of the electromagnetic valve of a purge of an adsorber and EBU


The electromagnetic valve of a purge of an adsorber (fig. 2.247) on-off, operates supply of blowing-off air through an adsorber (fig. 2.248) .

Main relay of a food of a control system of the engine

Fig. 2.249. Scheme of connections of the main relay of a food of a control system of the engine and EBU


At ignition inclusion a food from the storage battery moves on the control unit the engine, nozzles, the sensor of absolute pressure etc. At the included ignition the chain of the switch of ignition incorporates to "weight" through a winding of the main relay of a food (fig. 2.249) .

Fig. 2.250. Scheme of check of the main relay of a food of a control system of the engine


Check. Check an integrity of a chain of contacts of the relay on conclusions «5» («+») and «1» («–») (fig. 2.250) .
Relay winding (conclusions 2 and 4) chain Existence
it is not raised..... no
возбужденае........ is
At failure detection replace the main relay of a control system with the engine.
Moment of an inhaling of the main relay of a control system of the engine of 7-11 N · m.

Ignition coil

Fig. 2.251. Ignition coil


Fig. 2.252. Scheme of connections of the coil of ignition and EBU


On command from the control unit the engine the power transistor of system of ignition turns on. EBU gives out an operating signal on the ignition coil (fig. 2.25) , the current through primary winding of the coil of ignition sharply interrupts (fig. 2.252) . As a result in its secondary winding the impulse of a high voltage is induced.

Fuel pump

Fig. 2.253. Fuel pump


Fig. 2.254. Scheme of connections of the fuel pump


The location of the fuel pump is shown on fig. 2.253 , the scheme of connections of the fuel pump – on fig. 2.254 .

Acceleration sensor

Fig. 2.255. Acceleration sensor


Fig. 2.256. Scheme of connections of the sensor of acceleration and EBU


The acceleration sensor (fig. 2.255) serves for definition of difficult road conditions. The signal of the sensor is used by the control unit the engine for the prevention of false detection of admissions of ignition of a toplivovozdushny mix (fig. 2.256) .
Check consists in determination of tension of a signal of the sensor of acceleration (tab. 2.8).

Table 2.8
Check of tension of a signal of the sensor of acceleration
Check conditions
Control value
The engine works on
single to a course
2,3-2,7 And
Ignition is switched off
0 In

Drive of management of supply of fuel 

Fig. 2.257. Drive of management of supply of fuel: 1–cable of a drive of a butterfly valve; 2–returnable spring; 3–arm of the lever of a pedal of an accelerator; 4–accelerator pedal


The drive of management is shown by supply of fuel on fig. 2.257 .
Removal

Fig. 2.258. Bolts of fastening of the plug of a cable of a drive of a butterfly valve


Remove the plug (fig. 2.258) and an internal part of a cable from the lever of a pedal of an accelerator.

Fig. 2.259. Bolts of fastening of an arm of the lever of a pedal of an accelerator


Separate the contact socket of the switch of a pedal of an accelerator, unscrew bolts of fastening of an arm of the lever of a pedal of an accelerator (fig. 2.259)  and remove an accelerator pedal.
Check of a technical condition
Check the following:
– internal and external parts of a cable on existence of damages;
– smoothness of moving of a cable;
– the lever of a pedal of an accelerator on existence of deformations;
– a returnable spring on existence of damages;
– connection of the plug to the metal holder;
– operability of the switch of a pedal of an accelerator.
Installation

Fig. 2.260. Places of drawing of universal konsistentny greasing


At installation of a returnable spring and the lever of a pedal of an accelerator put universal konsistentny greasing in all points of a friction of the lever (fig. 2.260) .

Fig. 2.261. Places of drawing of hermetic (are shown by shooters)


Put hermetic in openings under bolts of fastening of an arm of the lever of a pedal of an accelerator (fig. 2.261)  and tighten bolts the moment of 8-12 N · m.
Reliably establish the plastic plug of a cable of management of a butterfly valve on the end of the lever of a pedal.

Fig. 2.262. A place of drawing of universal konsistentny greasing on a tip of a cable of a drive of an accelerator


Put universal greasing on a cable tip (fig. 2.262) .

That it is necessary to know to the owner of the car with the injector engine 
Injector motors surpass carburetor in many parameters, to take at least their profitability and problemless start-up in a frost. Nevertheless carburetor under our conditions sometimes appear more advantageous. Some automakers even deliver on our market cars with such engines. The whole matter is in the quality of gasoline which sell at us.
The injector engine is calculated on high-grade gasoline which on our fillings you will find infrequently. Besides different systems of injection have the specific features, they are necessary for considering at car operation. And in our market there is a lot of such systems: the mechanical –
K-Jetronic (KE-Jetronic), electromechanical – L-Jetronic and electronic – Motronic, Lucas, Magneti Marelli.
Many systems have two operating modes: the main and emergency, used at malfunction of one of sensors. The driver can and not notice such malfunction: on the dashboard there is no corresponding control lamp, and the engine continues to work (but any more in an optimum mode). Similar quite often it happens on the Audi cars equipped with engines with the central injection of fuel. About a third of the motorists having such cars, do not guess at all that go in emergency operation. And it conducts to the increased fuel consumption, decrease in capacity, rough operation of the engine and the complicated start-up. Malfunction comes to light only at the next maintenance. Therefore on the "weak" places of systems of injection which are showing under our conditions, it is necessary to dwell.
Systems with mechanical injection. They more than others, are subject to physical wear. The regulator of pressure of fuel refuses usually through 80–120 thousand km of run (engine start-up considerably worsens), nozzles – through 60–80 thousand km (rough operation of the motor, the increased fuel consumption). Refusal of nozzles is especially artful, as it will notice not at once. Diagnostics and repair need special equipment.
Sore point of systems with electromechanical injection – подсос air through the numerous vacuum hoses tending to cracking after 4–5 years of service. Especially on BMW cars and in a little smaller degree on Аudi. To define such defect quite difficult.
Electronic systems of injection. They have problems. For example, the accumulator "sat down", and you on an old habit decided to "light" from other car. The electronic control unit of system of injection as a result fails. And application of etilirovanny gasoline, in turn, puts out of commission the sensor of concentration of oxygen (lambda probe) and catalytic converter.
As a whole both mechanical, and electronic systems of injection have the pluses and minuses. At mechanical the thicket is refused by gasoline pumps and batchers distributors.
At electronic the gasoline pump is more durable and is cheaper, but elimination of any malfunction of the electronic control unit will cost very expensively. Besides, the reasons for failure of any system at us, alas, more than in Europe: poor-quality gasoline, dirt on roads and chemicals which strew in the winter. Therefore it is necessary to listen to recommendations of experts. If there is a possibility, for moisture removal from топливопроводов at each filling fill in in a tank a special preparation; through everyone
To 10 000–15 000 km of run do complete washing of system of injection.

System of supply of fuel

Fig. 2.263. Fuel tank: 1, 3 – covers; 2–hose of a high pressure; 4–fuel pump; 5–stopper of a bulk mouth; 6–шлаги double-thread valve; 7–double-thread valve; 8–holder; 9–valve of an otsechka of fuel; 10-cover of the valve of an otsechka of fuel


The system of supply of fuel consists of a fuel tank (fig. 2.263) , the fuel pump, the fuel filter, топливопроводов and a fuel stage with nozzles.
Fuel tank
Removal

Fig. 2.264. The hatch of the fuel pump in the body bottom


Combine a back of a back seat on a pillow, then cast away the combined seat forward (fig. 2.264) .
Screw-driver open the hatch of the fuel pump in the body bottom.
For pressure dumping in топливопроводах and hoses disconnect the contact socket from the fuel pump, start up the engine and wait, when it will stop.

       NOTE
For prevention of emission of fuel before a detachment топливопровода and a hose of supply of fuel dump pressure in system.

Disconnect a wire from the "minus" plug of the storage battery.

Fig. 2.265. The hatch (is open) the fuel pump in the body bottom


Disconnect a hose of a high pressure from the target union of the fuel filter (fig. 2.265) , disconnect the conductor of branch of a static electricity.

PREVENTION
For prevention of emission of fuel under the influence of residual pressure cover hose connection by rags.

Establish the car on the lift.
Disconnect from a tank a bulk hose and a perelivny tube.
Establish under a tank a jack.

Fig. 2.266. Collars of fastening of a fuel tank to the bottom of a body of the car


Remove collars of fastening of a fuel tank to the bottom of a body of the car (fig. 2.266) .
Accurately remove a fuel tank.
Check of a technical condition
Check the following:
– hoses and pipelines on lack of cracks or damages;
– serviceability of a stopper of a bulk mouth of a tank;
– a fuel tank on absence of deformation, corrosion or cracks;
– absence in a tank  of dirt and extraneous subjects;
– the internal filter of a tank on absence of damages and pollution;
– operation of the double-thread valve.
For check of the on-off valve slightly blow in it from entrance and target branch pipes. If air passes after small resistance, the valve is serviceable.
Installation
Be convinced that laying is reliably pasted to a tank then establish a tank and tighten самоконтрящиеся nuts of fastening of collars.
Attach a modulation hose to a tank and a bulk mouth, having inserted it on depth about 40 mm.
Attach to a tank a bulk hose it shorter, not goffered part.
Attach a parootvodny hose.
Attach to the fuel pump a hose of a high pressure, without allowing its perekruchivaniye.
Connect the contact socket of the fuel pump.