1997 RENAULT KANGOO fuel pump

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 14
Fiche n° 27
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.
17-49

JF5111.0
INJECTION
Fault finding - Checking conformity
17
E7J 780
engine
Engine warm, at idle speed, after fan assembly has operated at least once (air
conditioning not selected).NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes
4 Interpretation of
normally illuminated
bargraphs
-
Code present
No load recognition
Engine speed information
received
+ after ignition information
received
Idle speed regulation active
Richness regulation active
Fuel pump active1
2
4
6
6
3
7
17-67

Connect the bornier in place of the computer and check the insulation and continuity of the line:
Computer 4 Earth
Computer 16 Earth
Computer 34 Earth
Computer 9 7 Diagnostic socket
Computer 10 15 Diagnostic socket
Computer 18 5 Main relay
Computer 26 2 Main relay
Computer 20 2 Fuel pump relay
Repair if necessary.
JSA051.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
D7F 710
engine -
35 tracks
Erase the computer memory using G0**.
Try to start the engine. Switch the ignition on, then deal with the other faults.
Remember to carry out a status and parameter check.AFTER REPAIR
Bargraph 1 RH extinguishedFiche n° 27 side 1/2
XR25 CIRCUIT
XR25 aid:No connection, CO, CC-, CC+

1
This bargraph must be illuminated for fault findingNOTES
Test the XR25 on another vehicle.
Check:
- the injection, engine and passenger compartment fuses,
- the connection between the XR25 and the diagnostic socket,
- the position of the ISO selector (S8),
- the conformity of the cassette.
Repair if necessary.
Check:
- the presence of + 12 V on track 16 and earth on track 5 of the diagnostic socket,
- that the XR25 cable is in good condition.
Repair if necessary.
Check, ignition on, for 12 V on track:
- 1 on the main relay,
- 3 on the main relay,
- 1 on the fuel pump relay.
Repair if necessary.
Ignition on, check for 12 V on track 5 of the main relay:
- If there is 12 V on track 5 of the main relay: replace the fuel pump relay.
- If there is not 12 V on track 5 of the main relay: replace the main relay.
17-83

Connect the bornier in place of the computer and check the insulation and continuity of the line:
Computer 22 C Oxygen sensor
Repair if necessary.
JSA051.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
D7F 710
engine -
35 tracks
Turn the engine, switch the ignition on and erase the computer memory using
G0**. Try to start the engine. Switch the ignition on, then deal with the other
faults. Remember to carry out a status and parameter check.AFTER REPAIR
Bargraph 3 RH side illuminated or flashingFiche n° 27 side 1/2
OXYGEN SENSOR CIRCUIT
XR25 aid:CO, CC- or CC+line 22
CO line 4

3
If BG 3RH is flashing, increase the engine speed to 2500 rpm for 5 minutes
If BG 3RH becomes permanently illuminated, deal with the fault.
NOTES
Check the connection and the condition of the connector on the oxygen sensor.
Check, ignition on during the timed phase, 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.
Check for the presence of earth on track 4 on the injection computer.
Repair if necessary.
The fault persists. Replace the oxygen sensor.
The fault persists! Replace the injection computer.
IMPORTANT: The computer has probably been damaged by an electric shock. The cause of the damage
must be found before fitting a new computer.
17-87

Check the insulation from 12 V of line :
Computer 20 2 Fuel pump relay
Repair if necessary.
JSA051.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
D7F 710
engine -
35 tracks
Erase the computer memory using G0**.
Try to start the engine. Switch the ignition on, then deal with the other faults.
Remember to carry out a status and parameter check.AFTER REPAIR
Bargraph 8 LH side illuminatedFiche n° 27 side 1/2
FUEL PUMP CIRCUIT
XR25 aid:Just detection of CC+

8
CO or CC- on line 20 of the computer prevents dialogue with the computer.NOTES
The fault persists! Replace the injection computer.
IMPORTANT: The computer has probably been damaged by an electric shock. The cause of the damage
must be found before fitting a new computer.
The fault persists! Replace the fuel pump relay.
17-94

Connect the bornier in place of the computer and check the insulation and continuity of the line :
Computer 33 2 Injectors 1 and 4
Computer 32 2 Injectors 2 and 3
Repair if necessary.
JSA051.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
D7F 710
engine -
35 tracks
Erase the computer memory using G0**.
Try to start the engine. Switch the ignition on, then deal with the other faults.
Remember to carry out a status and parameter check.AFTER REPAIR
Bargraph 11 LH side illuminatedFiche n° 27 side 1/2
INJECTOR CIRCUIT
XR25 aid:*11 = XX.CO=> CO or CC- line 32 or 33 of the computer
*11 = XX.CC=> CC+ line 32 or 33 of the computer

11
XX = 14 => Cylinder 1 or 4 line 33 of the computer
XX = 23 =
> Cylinder 2 or 3 line 32 of the computerNOTES
Check the resistance of the valve for the two faulty injectors.
Replace the injector/s if necessary.
When the ignition is switched on and during the timed phase, check for 12 V on track 1 of the faulty
injector.
If necessary, repair the line from track 1 injector to track 5 fuel pump relay.
The fault persists! Replace the injection computer.
IMPORTANT: The computer has probably been damaged by an electric shock. The cause of the damage
must be found before fitting a new computer.
17-95

This bargraph only illuminates when the computer feed has been cut (disconnection of the battery, the
computer, ...).
Check the computer feed hygiene:
Computer 18 5 Main relay
Main relay 3 Fuse
Computer 26 2 Main relay
Main relay 1 Fuse
Computer 20 2 Fuel pump relay
Fuel pump relay 1 Fuse
Repair if necessary.
Turn the engine.
Switch the ignition off and wait for the loss of dialogue between the XR25 and the computer.
Switch the ignition on.
Enter dialogue with the computer.
Erase the computer memory using G0**.
NOTE :memorised faults are erased. It would therefore be useful to carry out a road test to check there
are no faults on the injection system.
JSA051.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
D7F 710
engine -
35 tracks
Erase the computer memory using G0**.
Try to start the engine. Switch the ignition on, then deal with the other faults.
Remember to carry out a status and parameter check.AFTER REPAIR
Bargraph 13 LH side illuminatedFiche n° 27 side 1/2
MEMORY CIRCUIT
XR25 aid:Loss of computer feed

13
NoneNOTES
17-98