1997 RENAULT KANGOO ignition

JF5111.0
INJECTION
Fault finding - Status and parameter checks
17
E7J 780
engine
Carry out the actions below if the engine does not start.
Otherwise, refer to the following pages.NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes Fault finding
1Flywheel signal
sensor StarterIlluminated if TDC
information is detected
DIAG 5
2Fuel pump
G10*Fuel pump should be
heard to operateDIAG 6
3 IgnitionConnect
Optima
StationStarting test.
Complete guide on
Optima StationUse Optima
5800 Station
4Fuel pressureConnect
pressure
gauge to
fuel inlet
and activate
starter
motorPressure gauge must
show
2.5 bars Fuel pressure,
see Workshop
Repair
Manual or
section
5Injector
commandStarterFuel must come out of
the injector
DIAG 11
6Engine
compressionConnect
Optima
StationComplete guide on
Optima StationUse Optima
5800 Station
7 FlywheelConnect
Optima
StationOscilloscope.
Complete guide on
Optima StationUse Optima
5800 Station
3
17-32

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 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

Connect the bornier in place of the computer and check the insulation and continuity of the line:
Computer 17 C Oxygen 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 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.
Check the connection and condition of the oxygen sensor connector.
Ignition on, during the timed phase, check for:
- earth on track B of the oxygen sensor.
-+ 12 V after the fuel pump relay on track A of the oxygen sensor.
Repair if necessary.
17-45

JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 12
Fiche n° 27
IMMOBILISER
XR25 aid:Status BG 3RH illuminated, ignition 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.
17-47

JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
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 rpm.None
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.
17-51

Check the insulation and continuity of the line:
Relay 5 2 Fan assembly
Fan assembly 1 Earth
Repair.
Connect the bornier in place of the computer and
check the insulation and continuity of the line:
Bornier 14 2 Relay
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 17
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.
17-53