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Dacia Solenza (engine E7J). Manual - part 34

IGNITION AND INJECTION

17 - 42

DF 054

PRESENT

MEMORIZED

CYLINDER 3 INJECTOR

CIRCUIT

1 DEF : Open circuit or short-circuit
CO : open circuit
CC.O : shot circuit at mass
CC.1 : short circuit at + 12 V.

RECOMME

NDATI

ONS

Perform the operations from ” recommendations” for reparation confirmation
Fix any other possible failures
Erase the failures memorized by the injection computer.
Perform a conformity checking by means of the CLIP tester.

AFTER

REPARATION

Conditions for diagnostic application to memorized failure:
Start the engine and especially stop it immediately the failure is becoming
present, so that catalyst-damaging risk is avoided.
In case of failures addition, treat as most important, failure “ DF009 actuators
relay control circuit”.

* If the failure is memorized with OBD indicator on, check in the context part,
if state “ET280 : Cylinder 3 injector circuit” corresponding to the OBD indicator
lighting request is affirmative. In this case, proceed as per bellow mentioned
method.

Check the connection and condition of the injector 3 connector.
Replace the connector if necessary.

Check the injector 3 resistance. Refer to chapter “Help” in order to compare the resistance values.
Replace the injector if necessary.

When setting the contact on, check the presence of supplying +12 V on pin 1 of the injector 3.
Fix, if necessary the electric routing up to actuators relay.

Connect the 90 ways terminal box instead of the injection computer then check the insulation and
continuity on line:

pin 60 injection computer > pin 2 injector 3

Fix if necessary.

If after these checking the problem is persisting, treat the other failures then perform the conformity
checking.

Diagnostic – Failures interpretation

IGNITION AND INJECTION

17 - 43

Perform the operations from ” recommendations” for reparation confirmation.
Fix any other possible failures.
Erase the failures memorized by the injection computer.
Perform a conformity checking by means of the CLIP tester.

AFTER

REPARATION

CYLINDER 4 INJECTOR

CIRCUIT

1. DEF : Open circuit or short-circuit
CO : open circuit
CC.O : shot circuit at mass
CC.1 : short circuit at + 12 V.

DF 055

PRESENT

MEMORIZED

* If the failure is memorized with OBD indicator on, check in the context
part, if state “ET281 : Cylinder 4 injector circuit” corresponding to the
OBD indicator lighting request is affirmative. In this case, proceed as per
bellow mentioned method

Check the connection and condition of the injector 4 connector.
Replace the connector if necessary.

Check the injector 4 resistance. Refer to chapter “Help” in order to compare the resistance values.
Replace the injector if necessary.

When setting the contact on, check the presence of supplying +12 V on pin 1 of the injector 4.
Fix, if necessary the electric routing up to actuators relay.

Connect the 90 ways terminal box instead of the injection computer then check the insulation and
continuity on line:

pin 89 injection computer > pin 2 injector 4

Fix if necessary.

If after these checking the problem is persisting, treat the other failures then perform the conformity
checking

Diagnostic – Failures interpretation

RECOMMENDATIONS

IGNITION AND INJECTION

17 - 44

DF 057

PRESENT

MEMORIZED

If failure “DF345” : Supply 5 volts potentiometers or sensors” is
present or memorized, this must be treated as most important.

Conditions for diagnostic application to memorized failure:
Set the contact on.
Start the engine, ensure that state “ET030: Upstream oxygen sensor
heating” is ACTIVE and wait that state “ET037 : Enriching
adjustment” is ACTIVE, then wait for 5 minutes.

* If the failure is memorized with OBD indicator on, check in the
context part, if state “ET285 : Upstream oxygen sensor circuit” corre-
sponding to the OBD indicator lighting request is affirmative. In this
case, proceed as per bellow mentioned method.

RECOMMENDATIONS

UPSTREAM

OXYGEN SENSOR CIRCUIT

1.DEF : Open circuit or short-circuit

Check the connection and condition of the oxygen sensor connector
Check if there is no water penetration in connector (a possible cause for engine unstable running)
Replace the connector if necessary.

Check for lack of tightening between the exhaust collector and catalyst

If the vehicle is running more in the city, perform a cleaning of the oxygen sensor.

Connect the 90 ways terminal box instead of the injection computer then check the insulation,
continuity and absence of the parasite resistance on lines:

Pin 45 injection computer > pin C oxygen sensor
Pin 80 injection computer > pin D oxygen sensor

Fix if necessary.

If the problem is persisting, replace the oxygen sensor.

If the problem is persisting after these checking, treat the other failures then perform the conformity
checking.

Perform the operations from ” recommendations” for reparation confirmation.
Fix any other possible failures
Erase the failures memorized by the injection computer.
Perform a conformity checking by means of the CLIP tester.

AFTER

REPARATION

Diagnostic – Failures interpretation

IGNITION AND INJECTION

17 - 45

If failure “DF345” : Supply 5 volts potentiometers or sensors” is present or
memorized, this must be treated as most important.

Conditions for diagnostic application to memorized failure:
- During road test, smooth driving, after an engine fan starting and state
“ET027: Enriching double loop” to be active.
- During road test, smooth driving, after an engine fan starting, immediately
followed by a deceleration (rising gradient) with state “ET003: Released
pedal valve position” active, gearbox ratio engaged and clutched.

* If the failure is memorized with OBD indicator on, check in the context
part, if state “ET287 : Downstream oxygen sensor circuit” corresponding
to the OBD indicator lighting request is affirmative. In this case, proceed
as per bellow mentioned method

Check the connection and condition of the oxygen sensor connector
Replace the connector if necessary.

Check for lack of tightening on the routing between the two oxygen sensors.

If the vehicle is running more in the city, perform a cleaning of the oxygen sensor.

Connect the 90 ways terminal box instead of the injection computer then check the insulation,
continuity and absence of the parasite resistance on lines:

Pin 44 injection computer > pin C oxygen sensor
Pin 76 injection computer > pin D oxygen sensor

Fix if necessary.

If the problem is persisting, replace the oxygen sensor.

If the problem is persisting after these checking, treat the other failures then perform the conformity
checking.

AFTER

REPARATION

Diagnostic – Failures interpretation

DF 058

PRESENT

MEMORIZED

DOWNSTREAM

OXYGEN SENSOR CIRCUIT

1.DEF : Open circuit or short-circuit

RECOMMENDATIONS

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