Dacia Solenza (engine E7J). Manual - part 41

 

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Dacia Solenza (engine E7J). Manual - part 41

 

 

IGNITION AND  INJECTION

17

17 - 70

ET035

LOW SPEED ENGINE FAN

RECOMMENDATIONS No failure on the water temperature sensor circuit must be present in

order to perform this diagnostic.

 Check:
-

engine fan condition

-

engine fan resistance condition

-

condition f the engine fan mass connection

-

low speed engine fan supply

-

supply line between engine fan and engine fan relay

 Mend if necessary.

Check the connection and condition of the connector of the low speed engine fan relay
Replace the connector if necessary.

Remove the relay of the low speed engine fan
Check, with the contact set on, the supply presence +12 volts at pole 1 of the relay.
Mend if necessary.

Measure the relay coil resistance.
Replace the relay of the low speed engine fan, if necessary.

 Connect the 90 ways terminal box instead of the computer and check the insulation, continuity and
absence of the parasite resistance on the connection between:

Pin 8 injection computer       >  Relay of the low speed engine fan

Mend if necessary.

Diagnostic – States interpretation

AFTER

Restart the conformity checking from the beginning.

REPARATION

IGNITION AND  INJECTION

17

17 - 71

ET036

HIGH SPEED - ENGINE FAN

RECOMMENDATIONS No failure on the water temperature sensor circuit must be present in

order to perform this diagnostic

 Check:
-

engine fan condition

-

engine fan resistance condition

-

condition of the engine fan mass connection

-

high speed engine fan supply

-

supply line between engine fan and engine fan relay

 Mend if necessary.

Check the connection and condition of the connector of the high speed engine fan relay
Replace the connector if necessary.

Remove the relay of the high speed engine fan
Check, with the contact set on, the supply presence +12 volts at pole 1 of the relay.
Mend if necessary.

Measure the relay coil resistance.
Replace the relay of the high-speed engine fan, if necessary.

Connect the 90 ways terminal box instead of the computer and check the insulation, continuity and
absence of the parasite resistance on the connection between:

Pin 38 injection computer      >  Rel

ay of the high speed engine fan

Mend if necessary.

Diagnostic – States interpretation

AFTER

Restart the conformity checking from the beginning.

REPARATION

IGNITION AND  INJECTION

17

17 - 72

ET037

ENRICHING ADJUSTMENT

RECOMMENDATIONS No failure must be present or memorized.

Check the connection and condition of the upstream oxygen sensor connector
Mend if necessary

Check the ignition
Check the tightening of the canister purging valve (a leak is appreciably disturbing the mixture
enriching achievement).
Check the tightening of the exhaust line.
Check the tightening of the intake manifold.
If the vehicle is driven only in town, the sensor may be clogged (try in charge driving).
Check the petrol pressure.
If idling is unstable, check the valves clearance and the distribution.
If necessary, replace the oxygen sensor.

Check the presence of +12 volts supply on upstream oxygen sensor.
Check the insulation and continuity of the connections between:

Pin 45 injection computer       > Pi

n C upstream oxygen sensor

Pin 80 injection computer

   > Pin D upstream oxygen sensor

Mend if necessary.

Diagnostic – States interpretation

AFTER

Restart the conformity checking from the beginning.

 REPARATION

IGNITION AND  INJECTION

17

17 - 73

ET039

IDLING ADJUSTMENT

RECOMMENDATIONS No failure must be present or memorized.

Attention to the recommended value of idling RPM: PR041

Check the connection and condition of the idling regulator connector.
Replace the connector if necessary.

Check the resistance of the idling regulator.
Replace the idling regulator if necessary

Check the insulation and continuity of the connections between:

Pin 12 injection computer

>pin B idling regulator

Pin 41 injection computer

>pin A idling regulator

Pin 42 injection computer

>pin C idling regulator

Pin 72 injection computer

>pin D idling regulator

Mend if necessary.

Idling regime

< minimal limit

RECOMMENDATIONS

 The idling RPM is too low

- Check the enriching adjustment operation.
- Clean the air supply circuit (valve body, idling regulator), which may be clogged.
- Check the engine oil level ( too high ? bubbling).
- Check the engine compressions.
- Check the valves clearances and the distribution setting.
- Check the ignition.
- Check the injectors.
If all checked elements are correct, replace the idling regulator

Idling regime

> maximal limit

RECOMMENDATIONS

 The idling RPM is too high

- Check the oil level
- Check the good operations of the atmospheric pressure sensor.
- Check possible leaks at piping connected to the inlet manifold.
- Check the electric valves with pneumatic control.
- Check the manifold gaskets.
- Check the gaskets of the valve body.
- Check tightening at servo-brake.
- Check the presence of nozzles in the connection hoses of the oil vapors re-aspiration circuit.
- Check the valves clearance and the distribution setting.
If all checked elements are correct, replace the idling regulator

AFTER

Restart the conformity checking from the beginning.

REPARATION

Diagnostic – States interpretation

 

 

 

 

 

 

 

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