air condition RENAULT KANGOO 1997 KC / 1.G Foult Finding - Injection Owner's Manual

JF5111.0
INJECTION
Fault finding - Introduction
17
E7J 780
engine
XR25 CHECKING STATUSES AND PARAMETERS
The status and parameter check is aimed at checking the statuses and parameters which do not illuminate
any fault bargraphs if they are outside of permitted tolerance values . This phase allows :
- Faults to be found without the illumination of fault bargraphs which may correspond to a customer
complaint (example : absence of no load information causing an unstable idle speed).
- The correct operation of the injection to be checked and the risk of faults appearing shortly after the
repair to be eliminated.
This section contains fault-finding for statuses and parameters, under their test conditions
(example : fault finding for # 01 ignition on and fault finding for # 01 engine running).
If a status does not operate normally or a parameter is outside of permitted tolerance values, consult the
fault-finding page indicated in the "Fault-finding" column.
XR25 CHECK CORRECT
If the XR25 check is correct, but the customer complaint persists, the problem must be dealt with through
customer complaints.
Treatment of customer complaints
This section has fault charts, which suggest a series of possible causes of the problem.
These lines of enquiry must only be used in the following cases :
- No fault bargraph appears on the XR25.
- No faults are detected during the checking of statuses and parameters.
- The vehicle is not operating correctly
POST-REPAIR CHECK
This operation is a simple check of the repair (by a command, or by an XR25 command mode ...).
This makes it possible to check that the system upon which the intervention has been carried out is correct
electrically.
It is an introduction to the road test.
ROAD TEST
A road test is essential in order to guarantee the correct operation of the vehicle and to test the quality of the
repair. Its role is to make sure that no faults occur (or will occur) when driving.
In order to be significant, the road test is subject to special driving conditions.
17-4

JF5111.0
INJECTION
Fault finding - Introduction
17
E7J 780
engine
Driving conditions for programming the adaptive variables:
During the road test, the engine speed must be stabilised for a few moments between:
220 < # 01 < 340 mbars
then 340 < # 01 < 470 mbars
then 470 < # 01 < 600 mbars
then 600 < # 01 < 730 mbars
then 730 < # 01 < 870 mbars
Do not exceed an engine speed of 4800 rpm
The engine must be warm (coolant temperature > 75 °C).
For this test, start from a fairly low engine speed, in 3rd or 4th gear, and apply progressive acceleration to
stabilise at the pressure required for 10 seconds in each zone.
The test must then be continued by driving normally, in a varied manner for 3 to 6 miles (5 to 10 km).
17-5

Connect the bornier in place of the computer and check the insulation and continuity of the line:
Computer 2 Earth
Computer 3 Earth
Computer 11 7 Diagnostic socket
Computer 38 15 Diagnostic socket
Computer 24 Fuse F6 15 A
Computer 32 Fuse F3 5 A
Repair.
JF5111.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
E7J 780
engine
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 side 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.
17-9

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 - Interpretation of XR25 bargraphs17
E7J 780
engine
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 17

3
If BG 3RH is flashing, increase the engine speed to 2500 rpm for 5 minutes
If BG3RH 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.
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.
17-13

Connect the bornier in place of the computer and check the insulation,
continuity and that there is no interference resistance on the line:
Computer 33 B Target sensor
Computer 34 A Target sensor
Repair if necessary.
JF5111.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
E7J 780
engine
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 5 RH side illuminated or flashingFiche n° 27 side 1/2
FLYWHEEL SIGNAL CIRCUIT
XR25 aid:*25 = CO.0 =>CO or CC- line 33 or 34
*25 = CC.0 =
>CC- line 33 or 34 on the computer
*25 = In =
>sensor incorrectly connected
5
If BG 5RH is flashing, erase the computer memory using G0**.
Try to start the vehicle.
If BG 5RH becomes permanently illuminated or flashes, deal with this fault.
NOTES
*25 = CO.0
*25 = CC.0Check the condition of the flywheel, especially if it has been removed.
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.
Check the target sensor has been correctly connected (the sensor connector must
not be inverted).
Repair if necessary.*25 = In
The fault persists! Replace the sensor.
The fault persists! Replace the sensor.
17-17

JF5111.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
E7J 780
engine
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 RH side illuminated or flashingFiche n° 27 side 1/2
ADAC CIRCUIT
XR25 aid:False diagnosis by computer for vehicles not fitted with ADAC

13
This vehicle is not fitted with ADAC at the moment.
If another bargraph is illuminated, refer to the fault finding for that bargraph.NOTES
If your vehicle has ADAC,
this method of fault finding will not be of use for this fault.
This bargraph is often illuminated or flashing in the following cases:
-Air conditioning compressor command mode G12*.
-Fault on fuel pump relay circuit.
-Other cases, which have not yet been noted, may well exist.
17-24

JF5111.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
E7J 780
engine
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 15 LH side illuminatedFiche n° 27 side 1/2
COMPUTER AC CONNECTION CIRCUIT
XR25 aid:CC + 12 V line 51 on the computer

15
Connect the bornier in place of the computer and check the insulation and continuity of line 51 on the
computer.
Repair if necessary.
Check that the vehicle has air conditioning and if it is not fitted with air
conditioning, deal with the other bargraphs first.
Engine running, select the air conditioning function.
NOTES
If the fault persists, refer to the air conditioning fault finding.
17-27

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

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 16
Fiche n° 27
AIR CONDITIONING
XR25 aid:Status BG 9LH, 10LH or 10 RH, incorrect illumination
No fault bargraphs should be illuminated.NOTES
Check the insulation and continuity of the lines for track 5 and track 51 on the injection computer.
Repair if necessary.
Refer to the fault finding for the air conditioning.
17-52