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 1 2 Pinking sensor
Computer 15 1 Pinking sensor
Computer 16 Pinking sensor screening
If necessary, replace the sensor.
JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
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
17-116

Check the insulation, continuity and that there is no interference resistance
on the line:
Computer 5 C Pressure sensor
Computer 15 A Pressure sensor
Computer 23 B Pressure sensor
Repair if necessary.
JSA052.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
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.
17-117

JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 10
Fiche n° 27
RICHNESS REGULATION
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.
17-118

Check the insulation and continuity of the line:
injectors 1 and 4 Computer 33 2 injectors
injectors 2 and 3 Computer 32 2 injectors
Repair if necessary.
JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 11
Fiche n° 27
INJECTOR
XR25 aid:CO or CC - line 33 of the computer for injectors 1 and 4
CO or CC - line 32 of the computer 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.
17-119

JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 12
IMMOBILISERFiche n° 27
XR25 aid:Status BG 3RH, incorrect illumination
No fault bargraphs should be illuminated.NOTES
Check the insulation and continuity of the wiring for track 30 on the injection computer.
If the fault persists, refer to the immobiliser fault finding.
17-120

if the value read is incoherent:
- Check that the sensor is correctly mounted and supplied:
•+12 V on A1
• Earth on B2
- Check the insulation, continuity and that there is no interference resistance on the line:
Computer 8 B1 vehicle speed sensor
Repair.
JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 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 on a road test.NOTES
The fault persists! Replace the speed sensor.
17-121

JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 14
Fiche 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.
17-122

JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 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.
There is a fault with the injection or the sensor.
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.
17-123

JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 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.
17-124

Check the insulation and continuity of the line:
Relay 5 1 Fan assembly
Fan assembly 2 Earth
Repair.
Connect the bornier in place of the computer and
check the insulation and continuity of the line:
Bornier 27 2 Relay
Repair.
JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 16
Fiche n° 27
ANTIPERCOLATION RELAY
XR25 aid:The fan assembly must operate when command mode G17* is used.
No fault bargraphs should be illuminated.NOTES
The antipercolation relay
does not click when its
command mode is used
There is 12 V
on track 1
Ignition on, check for 12 V on track 1 of the fan assembly relay.
There is not 12 V
on track 1Check the line for track 1 of the relay to the fuse.
The antipercolation relay
does click when its
command mode is usedFan assembly relay in place, check, during operation of the command mode,
for 12 V on track 5 of the fan assembly relay.
There is not 12 V
on track 5Check the insulation and continuity of line 3 on the
relay to the fuse.
Repair if necessary.
The fault persists, replace the fan assembly relay.
There is 12 V
on track 5
If the fan assembly still does not operate, replace the
fan assembly.
The fault persists, replace the relay.
The fault persists!
Replace the injection computer.
17-125