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

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Interpretation of XR25 bargraphs
38
ABS BOSCH
5.3
Erase computer memory(GO**).
Carry out a road test followed by a check with the XR25 kit.AFTER REPAIR
Bargraph 8 right or left hand side flashing
Front right or front left wheel sensor signal

Even if they are present at time of testing, these faults will always be declared by
BG 8 flashing on the left or right hand side.
To confirm their presence and therefore the need to apply the fault finding be-
low, carry out a road test. The fault is present if the bargraph illuminates during
the test.
If bargraphs 6 and 8 left hand side are both illuminated, deal with bargraph 6
first.
If bargraphs 6 and 8 right hand side are both illuminated, deal with bargraph 6
first.
NOTES
Fiche n° 53 8
Check the quality of the wheel speed sensor mounting (its position and that it is tightened to
recommended torque).Check the sensor / target air gap over one wheel revolution : 0.13 mm < air
gap< 1.96 mm. Check conformity of the target (condition, number of
teeth=26)
Carry out a visual inspection of the sensor wiring and check the quality of the connections on the 31 track
computer connector.
If all checks are correct, reconnect the computer and the wheel speed sensor, then erase the computer
memory.
Leave fault finding mode(G13*) and carry out a road test. Replace the sensor if the fault reappears.
If the fault reappears after replacing the sensor, it may be caused by an operating fault on a solenoid
valve and it is therefore necessary to carry out the hydraulic check of the solenoid valves with the XR25 kit
with command G03* or G04* (consult the section "Aid"). If the ten unlocking/locking cycles do not occur
on one of the wheels, replace the hydraulic assembly.
If the hydraulic assembly is not at fault, replace the computer.
Check the connection and condition of the sensor connections.
If the connector is correct , check the resistance of the sensor at its connector.
Replace the sensor if its resistance is not approximately 1.6 Kohms (1.6 Kohms ± 320 ohms).
38-11

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Interpretation of XR25 bargraphs
38
ABS BOSCH
5.3
Erase computer memory(GO**).
Carry out a road test followed by a check with the XR25 kit.AFTER REPAIR
Bargraph 9 right or left hand side flashing
Signals to rear right or rear left wheel sensor

Even if present at time of test, these faults will always be declared by BG9 flas-
hing on the left or right hand side.
To confirm their presence and therefore the need to apply the fault finding be-
low, carry out a road test.The fault is present if the bargraph illuminates during
the test.
If bargraphs 7 and 9 left hand side are both illuminated, deal with bargraph 7
first.
If bargraphs 7 and 9 right hand side are both illuminated, deal with bargraph 7
first.
NOTES
Fiche n° 53 9
Check the quality of the wheel speed sensor mounting (position and torque tightening).
Check the connection and condition of the sensor connections.
Check the connections at the intermediate connector under the body R101.
If the connector is correct , check the resistance of the sensor at its connector.
Replace the sensor if its resistance is not approximately 1.6 Kohms (1.6 Kohms ± 320 ohms).
Carry out a visual inspection of the sensor wiring and check the quality of the connections on the 31 track
computer connector.
If all checks are correct, reconnect the computer and the wheel speed sensor, then erase the computer
memory. Leave fault finding mode(G13*) and carry out a road test.
If the fault reappears, check the sensor/target air gap over one wheel rotation :
0.03 mm < air gap< 2.4 mm (test only possible on vehicle with 4 bar rear axle).
Check conformity of the target:condition, number of teeth = 26.
If the fault reappears after replacing sensor, it could be caused by a solenoid valve operating fault. It is
therefore necessary to carry out a hydraulic test of the solenoid valves with the XR25 kit with command
G05* or G06* (consult section"Aid"). If the ten unlocking/locking cycles do not occur on one of the
wheels, replace the hydraulic assembly.
If the hydraulic assembly is not at fault, replace the computer.
If all checks are correct, leave fault finding mode(G13*) and carry out a road test.
Replace the sensor if the fault reappears.
38-12

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Interpretation of XR25 bargraphs
38
ABS BOSCH
5.3
Erase computer memory(GO**).
Carry out a road test followed by a check with the XR25 kit.AFTER REPAIR
Bargraph 10 right hand side illuminated or flashing
Pump motor circuit
XR25 aids: * 301.dEF : Permanent signal or CO earth.
2.dEF : Motor not turning over.
10
If bargraph 10 RH is flashing, confirm the presence of the fault and therefore the
need to apply fault finding below, using command G20* on the XR25 kit.
The fault is present if the bargraph re-illuminates at the end of the command.
NOTES
Fiche n° 53
If all checks are correct, reconnect the computer and erase the memory with command G0**.
Leave fault finding mode(G13*) and carry out a road test.
Replace the computer if the fault reappears.
Check the ABS earths (tightening of the two earth bolts above the hydraulic assembly).
Check/ ensure continuity between the ABS earth and track 16 of the computer connector.
Check locking of the two-track connector of the pump motor.
1.dEFNOTESReplace the computer if the pump motor is operating permanently.
Replace the hydraulic assembly (mechanical locking of the pump, ...).
2.dEFNOTESNone.
38-13

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Interpretation of XR25 bargraphs
38
ABS BOSCH
5.3
Erase computer memory(GO**).
Carry out a road test followed by a check with the XR25 kit.AFTER REPAIR
Bargraph 11 left hand side illuminated
Solenoid valve power supply fault

11Fiche n° 53
If all the checks are correct, reconnect the computer then erase its memory with command G0**.
Leave fault finding mode(G13*) and carry out a road test. Replace the computer if the fault reappears.
Carry out operations necessary for obtaining correct voltage between tracks 19 and 17/18 of the 31-track
ABS computer connector (9.4 volts < correct voltage < 17.4 volts) :
- Check tightness and condition of battery terminals.
- Check the 60A fuse in the engine connection unit (white base).
- Ensure continuity between the 60A fuse and tracks 17 and 18 of the computer connector.
- Check the ABS earths (tightening of the two earth bolts above the hydraulic assembly).
- Check/ ensure continuity between the ABS earth and track 19 of the computer connector.
None.
NOTES
38-14

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Interpretation of XR25 bargraphs
38
ABS BOSCH
5.3
Erase computer memory(GO**).
Carry out a road test followed by a check with the XR25 kit.AFTER REPAIR
Bargraph 12 left hand side illuminated or flashing
Brake light circuit

12Fiche n° 53
Press the brake pedal while observing right and left bargraph 13.
Are the positions "pedal released" and "pedal depressed" registered?
None.
NOTES
YESCheck the two brake light bulbs and the earth of the rear light units (no
earthing of track 14 across the bulbs when pedal is not depressed ).
NOApply the fault finding described in the interpretation of bargraph 13 right
and left hand side for "Bargraph 13 left hand side extinguished, brake pedal
depressed".
38-15

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Interpretation of XR25 bargraphs
38
ABS BOSCH
5.3
Erase computer memory(GO**).
Carry out a road test followed by a check with the XR25 kit.AFTER REPAIR
Bargraph 12 right hand side flashing
Target of one of the wheels

12Fiche n° 53
Even if present at moment of testing, this fault will always be declared by BG 12
RH side flashing.
To confirm its presence and therefore the need to apply the fault finding below,
carry out a road test. The fault is present if the bargraph illuminates during the
test.
NOTES
Check the quality of wheel speed sensor mountings (position and that they are tightened to the
recommended torque).
Check the conformity of the targets :condition, number of teeth= 26.
38-16

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Interpretation of XR25 bargraphs
38
ABS BOSCH
5.3
AFTER REPAIR
13Fiche n° 53
Bargraph 13 left hand side extinguished, brake pedal depressed
Carry out checks only if illumination of the bargraph is not consistent with the
pedal position. NOTES
Bargraph 13 right and left
Brake pedalIlluminated on left hand side if pedal depressed.
Illuminated on right hand side if pedal not depressed.

BG 13 right remains permanently illuminated.
If brake lights are operating
:
- Ensure continuity between dashboard / rear left R2 connector on track 7 and track 14 of the ABS
computer connector .
Dashboard / ABS R36 intermediate connector (track 8).
If brake lights are not operating
:
- Check condition and adjustment of brake light switch as well as the 15A fuse for the brake lights (in
the passenger compartment connection unit). Replace if necessary.
- Disconnect the brake light switch, then check / ensure presence of + after ignition feed on track A3
of the connector
- Check operation of brake light switch (closed contact between tracks A3 and B1).
- Check and ensure continuity between track B1 of the brake light switch connector and the dashboard
/ rear left hand side R2 connector on track 7.
Bargraph 13 permanently illuminated on left hand side
- Check the condition and adjustment of the brake light switch. Replace if necessary.
- Check the operation of the brake light switch contact (closed contact between tracks A3 and B1).
Replace the brake light switch if there is permanent continuity between the two tracks.
- Check and ensure insulation from 12 volts of the connection between track B1 of the brake light
switch connector and track 14 of the ABS computer connector .
Intermediate connectors : Dashboard / ABS R36 on track 8.
Dashboard / rear left hand side R2 on track 7.
Carry out a road test followed by a check with the XR25 kit.
38-17

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Conformity Check38
ABS BOSCH
5.3
Order of
operationsFunction to be checked Action Bargraph Display and Comments
1 XR25 dialogueD11
(selector on
S8)
2 Computer conformity#12
3
Operation of ABS warning
light- computer
initialisation check
IgnitionTwo second illumination of
warning light when ignition is
switched on (consult fault
finding if it remains illuminated
or if it does not illuminate)
4Acknowledgement that
brake pedal is not
pressed
5Acknowledgement that
brake pedal is pressedPress brake
pedal
Only carry out this conformity check after a complete XR25 check.NOTES
13
13
38-18

Use of command modes:
Solenoid valve control for hydraulic inspection: G03* to G06*
Lift vehicle so that the wheels can be turned and check that they turn freely.
Keep the brake pedal pressed down so that the wheel being tested cannot be turned by hand (do
not press the brake too hard to ensure you are at the releasing limit).
Enter G0X* Ten cycles of unlocking/locking must be noted for the wheel concerned.
Pump motor control : G08*
Enter G08* and apply brake Pump operation must be noted for 2 se-
conds.
Pump motor and solenoid valve control : G20*
Enter G20* and apply brake Brief motor and solenoid valve opera-
tion must be noted.
Bleeding of hydraulic circuits : G15*3* front left / G15*4* front right / G15*5* rear left / G15*6* rear
right
Apply the procedure described in the section "Bleeding the circuits" in the Workshop Repair Manual.
B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Fault finding - Aid38
ABS BOSCH
5.3
38-19

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEM
Fault finding - Customer Complaints38
ABS BOSCH
5.3
AFTER REPAIR Carry out a road test, then a check with the XR25 kit.
WARNING LIGHT FAULTS
ABS warning light does not illuminate for 3 seconds after ignition switched on. Chart 1
Chart 2 Permanent illumination of ABS warning light .
Chart 3
FAULTS NOTED WHEN BRAKING WITH ABS REGULATION
Locking of one or more wheels.Chart 4
Pulling.
Chart 6 Wandering.
Chart 7
Unexpected ABS operation when using special equipment
(mobile phone,CB...).
Chart 9
OTHER CASES
ABS warning light does not illuminate, computer disconnected.Chart 14
No communication with ABS computer.
Chart 15 Only consult this section after a complete check with the XR25 kit.
NOTES
ABS warning light illuminates again after engine starts.
Unexpected ABS operation at low speed and little force applied to brake.
Unexpected ABS operation on poor road surface.
Extension of brake pedal travel following a regulation phase
(with an irregular pedal when regulation begins).
Chart 5
Chart 8
Chart 10
Spongy pedal.
Brake pedal vibration.
Noise from pump, pipes or hydraulic assembly .
Chart 11
Chart 12
Chart 13 Chart 3 Temporary illumination of ABS warning light when driving.
38-20