engine RENAULT KANGOO 1997 KC / 1.G Foult Finding - Injection Repair Manual

JF5111.0
INJECTION
Fault finding - Status and parameter checks
17
E7J 780
engine
Check during road test.NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes Fault finding
1Vehicle speed
information# 18X = speed read on
speedometer in km/h
DIAG 13
2Adaptive
richnessProgram-
ming
# 30
# 3164 ≤ X ≤ 192
64 ≤ X ≤ 192 DIAG 14
3Emission of
pollutants2500 rpm
after driving
At idle
speed, wait
for
stabilisationCO < 0.3 %
CO2 > 13.5 %
O2 < 0.8 %
HC < 100 ppm
0.97 < λ < 1.03
CO < 0.5 %
HC < 100 ppm
0.97 < λ < 1.03
DIAG 15
see also
DIAG 10
17-35

JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 1
Fiche n° 27
BATTERY VOLTAGE
XR25 aid:Battery voltage, ignition on, Minimum < # 04 < Maximum
Battery voltage, idle speed, Minimum < # 04 < Maximum
No fault bargraphs should be illuminated.
No consumersNOTES
If # 04 < Minimum, the battery is discharged:
Check the charging circuit to determine the cause of this fault.
Ignition on
If # 04 > Maximum, the battery may be overcharged:
Check the charging voltage is correct with and without consumers.
If # 04 < Minimum, the charging voltage is too low:
Check the charging circuit to determine the cause of this fault.
At idle speed
If # 04 > Maximum, the charging voltage is too high:
The alternator regulator is faulty. Repair this fault and check the electrolyte level in the battery.
NOTE:
The battery and the charging circuit may be checked using the OPTIMA 5800 station (measurement does
not require the battery to be disconnected, which retains the memories of the computers).
17-36

Check the insulation and continuity of the line:
Computer 19 2 Throttle potentiometer
Computer 45 1 Throttle potentiometer
Computer 46 3 Throttle potentiometer
Repair if necessary.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 2
THROTTLE POTENTIOMETERFiche n° 27
XR25 aid:# 17 outside tolerances
# 17 does not vary when throttle moves
Status BG 2LH or 2RH, incorrect illumination
No fault bargraphs should be illuminated.
Ignition on or engine running.NOTES
Status bargraph 2RH
incorrect illuminationNoneNOTES
If the fault is still present, replace the throttle potentiometer.
# 17 is fixedNoneNOTES
Check the resistance of the throttle potentiometer when the throttle butterfly is moved.
If the resistance varies, check the electrical lines of the sensor.
If the resistance does not vary, check that the sensor is connected mechanically to the throttle.
If necessary, replace the sensor.
# 17 outside tolerancesNoneNOTES
Check the upper and lower stops of the throttle butterfly.
Check the accelerator control (points of resistance and friction).
Repair.
17-37

Check the insulation, continuity and that there is no interference resistance on the electrical line :
Computer 15 B2 Coolant temperature sensor
Computer 44 B1 Coolant temperature sensor
Repair.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 3
Fiche n° 27
COOLANT TEMPERATURE
XR25 aid: # 02 = Engine temperature ± 5 °C
No fault bargraphs should be illuminated.NOTES
If the value read is incoherent, check the sensor is correctly following the standard table of values for
"resistance as a function of temperature".
Replace the sensor if the values are incorrect (
NOTE : If a sensor is incorrect, this is often due to an electric
shock).
17-38

Check the insulation, continuity and that there is no interference resistance on the electrical line :
Computer 20 2 Air temperature sensor
Computer 46 1 Air temperature sensor
Repair.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 4
Fiche n° 27
AIR TEMPERATURE
XR25 aid:# 03 = Temperature under the bonnet ± 5 °C
No fault bargraphs should be illuminated.NOTES
If the value read is incoherent, check the sensor is correctly following the standard table of values for
"resistance as a function of temperature".
Replace the sensor if the values are incorrect (
NOTE : If a sensor is incorrect, this is often due to an electric
shock).
17-39

Check the insulation, continuity and that there is no interference resistance on the electrical line :
Computer 33 B Flywheel signal sensor
Computer 34 A Flywheel signal sensor
Repair. If necessary, replace the sensor.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 5
Fiche n° 27
TDC DETECTION
XR25 aid:Status BG 3LH, incorrect illumination
No fault bargraphs should be illuminated.
When the starter motor is activated.NOTES
Check the sensor is correctly mounted.
Check the condition of the target (if it has been removed).
17-40

Check the insulation and continuity of the wiring:
Fuel pump relay L5 Impact sensor
Impact sensor C1 Fuel pump
Repair if necessary.
Check the 30A fuel pump fuse.
Check the insulation and continuity of the wiring:
Fuel pump fuse L3 Fuel pump relay
Repair if necessary.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 6
Fiche n° 27
FUEL PUMP
XR25 aid:The command mode should cause the fuel pump to operate
No fault bargraphs should be illuminated.NOTES
Check the hygiene and presence of earth on track C2 of the fuel pump.
If + 12 V is not reaching the fuel pump, replace the fuel pump relay.
If + 12 V is reaching the fuel pump, replace the fuel pump.
Check the impact sensor is correctly clipped in.
17-41

Check the insulation and continuity of the line:
Computer 9 D Idle speed regulation motor
Computer 35 A Idle speed regulation motor
Computer 40 B Idle speed regulation motor
Computer 36 C Idle speed regulation motor
Repair if necessary and continue fault finding using the value for # 06.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 7
IDLE SPEED REGULATIONFiche n° 27
XR25 aid:Engine speed , Minimum < # 06 < Maximum
No fault bargraphs should be illuminated.NOTES
# 06 < MinimumThe idle speed is too lowNOTES
Idle speed regulation is not maintaining the idle speed.
- Clean the air supply circuit (throttle body, idle regulation valve), since it is probably contaminated.
- Check the engine oil level (too high ---
> splashing).
- Check and ensure correct fuel pressure.
- Using the OPTIMA 5800 station, check the engine compression.
- Check the valve clearances and the timing.
If all these points are correct, replace the idle regulation motor.
# 06 > MaximumThe idle speed is too highNOTES
An air leak may be affecting the idle speed regulation programming.
- Check the connections on the manifold.
- Check the hygiene of the pipes on the manifold.
- Check the pneumatically controlled solenoid valves.
- Check the manifold gaskets.
- Check the throttle body gaskets.
- Check the sealing of the brake servo.
- Check the restrictions are present in the oil vapour rebreathing circuit.
- Check the fuel pressure.
If all these points are correct, replace the idle speed regulation motor.
17-42

The pinking sensor should give a signal which is variable and not zero, to prove that it is recording the
mechanical vibrations of the engine.
If the signal is zero:
- Check the sensor is correctly screwed in.
- Check the insulation and continuity of the wiring:
Computer 8 2 Pinking sensor
Computer 44 1 Pinking sensor
Computer 2 Pinking sensor screening
If necessary, replace the sensor.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 8
Fiche n° 27
ANTI-PINKING CIRCUIT
XR25 aid:# 13 is not zero and variable for fast idle or under load
No fault bargraphs should be illuminated.NOTES
17-43

Check the insulation, continuity and that there is no interference resistance
on the line:
Computer 45 C Pressure sensor
Computer 44 A Pressure sensor
Computer 16 B Pressure sensor
Repair if necessary.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 9
Fiche n° 27
PRESSURE CIRCUIT
XR25 aid:Ignition on # 01 not coherent
At idle speed # 01 < Minimum or # 01 > Maximum
# 16 not coherent
No fault bargraphs should be illuminated.NOTES
# 01 not coherent
ignition on
# 01 < Minimum at idle
speed
# 16 not coherent
If all these points are correct, replace the sensor.
A vacuum pump with a pressure gauge may be used to check coherence with
# 01 and to show a faulty sensor.
# 01 > Maximum at idle
speedThe manifold pressure is often a sign of incorrect engine operation. Check
- the sealing of the pipe between the manifold and the sensor,
- the valve clearances,
- the canister bleed valve which should be closed at idle speed,
- cylinder compression using the OPTIMA 5800 station.
If all these points are correct, replace the sensor.
A vacuum pump with a pressure gauge may be used to check coherence with
# 01 and to show a faulty sensor.
17-44