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

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 54 2 Pinking sensor
Computer 44 1 Pinking sensor
Computer 2 Pinking sensor screening
If necessary, replace the sensor.
JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 8ANTI-PINKING CIRCUITFiche n° 27
XR25 aid:# 13 is not zero and variable for fast idle or under load
No fault bargraphs should be illuminated.
NOTES
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Check the insulation, the continuity and that there is no interference on the
line:
Computer 45 C Pressure sensor
Computer 44 A Pressure sensor
Computer 16 B Pressure sensor
Repair if necessary.
JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 9PRESSURE CIRCUITFiche n° 27
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.
17-189

JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 10RICHNESS REGULATIONFiche n° 27
XR25 aid: Richness regulation faulty
No fault bargraphs should be illuminated.
Ignition correct (a check may be made using the OPTIMA 5800 station).
No other status bargraph should show a fault.NOTES
Check the sealing of the canister bleed valve (a leak can disrupt the richness considerably).
Check the sealing of the exhaust pipe upstream from the oxygen sensor.
Check the sealing of the inlet manifold.
If the vehicle has only been driven in town, the sensor is contaminated (try driving under load).
Check the fuel pressure.
If the idle speed is unstable, check the valve clearances.
Check the injectors (flow and shape of the jet).
If necessary, replace the oxygen sensor.
17-190

Check the insulation and continuity of the line:
injectors 1 and 4 Computer 30 2 injectors
injectors 2 and 3 Computer 4 2 injectors
Repair if necessary.
JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 11INJECTORFiche n° 27
XR25 aid : CO or CC - line 30 of the computer for injectors 1 and 4
CO or CC - line 4 of the computers for injectors 2 and 3
No fault bargraphs should be illuminated.NOTES
Check the resistance of the faulty injector.
Replace it if necessary.
During command mode operation, check for + 12 Volts on track 1 of the faulty injector.
Repair.
17-191

JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 12IMMOBILISERFiche n° 27
XR25 aid : Status BG 3RH, illuminated when ignition switched on
No fault bargraphs should be illuminated.NOTES
Check the insulation and continuity of the wiring for track 37 on the injection computer.
If the fault persists, refer to the immobiliser fault finding.
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if the value read is incoherent:
- Check that the sensor is correctly mounted and fed:
• +12 V on A1
• Earth on B2
- Check the insulation, continuity and that there is no interference resistance on the line:
Computer 12 B1 vehicle speed sensor
Repair.
JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 13
Fiche n° 27
VEHICLE SPEED
XR25 aid: # 18 = Speed read on speedometer in km/h
No fault bargraphs should be illuminated. Check with a road test.NOTES
The fault persists! Replace the speed sensor.
17-193

JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 14Fiche n° 27 side 2/2
ADAPTIVE RICHNESS
XR25 aid:Minimum < # 30 < Maximum
Minimum < # 31 < Maximum
No fault bargraphs should be illuminated.Carry out the programming operations.NOTES
Ensure the canister bleed valve is sealed.
Erase the computer memory.
Engine warm , running at idle speed, check the values for # 30 and # 31.
-If # 30 or # 31 is at a MAXIMUM, there is not enough fuel.
- If # 30 or # 31 is at a MINIMUM, there is too much fuel.
Ensure the hygiene, cleanliness and correct operation of :
- filter
- fuel pump
- fuel circuit
- fuel tank.
17-194

JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
NOTES
DIAG 15
Fiche n° 27
EMISSION OF POLLUTANTS
XR25 aid:
None
No fault bargraphs should be illuminated.
NOTES
0.97 ≤ λ ≤ 1.03 at 2500
rpmThe oxygen sensor loops correctly at 2500 rpm.
If CO > 0.3 % at 2500 rpm
NOTES 0.97 ≤ λ ≤ 1.03 at 2500
rpmThe oxygen sensor does not loop correctly at 2500 rpm.
It is an injection or sensor fault.
The catalytic converter is faulty.
NOTE : it is vital to determine the cause of the catalytic converter damage to
avoid a new converter also being damaged.
If λ < 0.97 or λ > 1.03 at idle speed
Check the sensor earth and heating.
Check there is no air leak at the manifold.
17-195

JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 15
Cont.Fiche n° 27
No fault bargraphs should be illuminated.
NOTES
NOTES λ > 1.03 at 2500 rpmNone
The oxygen sensor loops correctly at 2500 rpm.
NOTES λ < 0.97
at 2500 rpm.The oxygen sensor does not loop correctly at 2500 rpm, CO >
0.3 % at 2500 rpm.
Check the pressure sensor.
Check the sensor.
Check that an injector is not faulty.
Check there is no leak at the exhaust.
Check that an injector has not seized.
Check the fuel pressure is not too low.
The oxygen sensor does not loop correctly at 2500 rpm.
Check there is not an injection fault.
Check there is not an ignition fault.
Check the sensor is not faulty.
Check the fuel pressure.
17-196

JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
55 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 16AIR CONDITIONINGFiche n° 27
XR25 aid:Status BG 10LH or 10RH incorrect illumination
No fault bargraphs should be illuminated.
NOTES
Check the insulation and continuity of lines track 5 and track 51 of the injection computer.Repair if
necessary.Consult the air conditioning fault finding.
17-197