1997 RENAULT KANGOO wheel

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

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEM
Fault finding - Fault chart 38
ABS BOSCH
5.3
AFTER REPAIR Carry out a road test, then a check with the XR25 kit.
LOCKING OF ONE OR MORE WHEELSFault chart 4
REMINDER:Wheel locking on a vehicle equipped with ABS, or tyre squeal, considered by the customer
as locking, can be linked to a normal reaction of the system and should not be systematically
considered as a fault :
- locking is allowed below 3.75 mph ( 6 km/h) (the system will not provide regulation).
- Braking with ABS regulation under very bad road conditions (high degree of tyre squeal).
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Only consult this section after a complete check with the XR25 kit.NOTES
On the other hand, if there really is wheel locking on one or more wheels, lift the vehicle so the wheels can
be turned, and check :
- a possible incorrect connection in the speed sensor connection.
• Use operations #01, #02, #03 and #04 while turning the appropriate wheel and ensure the consis-
tency of the results obtained .
• If the value measured is zero, turn the other wheels to confirm a bad electrical connection of the sen-
sors and repair the wiring.
- A possible incorrect connection of the hydraulic assembly pipes.
• Use operations G03*, G04*, G05* and G06* while applying the brake and check for the ten cycles of
unlocking/locking on the wheel concerned (consult section "Aid").
• If the ten cycles do not occur on the wheel tested, (wheel remains locked), see if they occur on ano-
ther wheel (if a bad connection is confirmed: repair).
• If the ten cycles do not occur on a wheel and the pipes are correctly connected, replace the hydraulic
assembly.
• Check the condition of the ABS targets and that they conform.
• Also check the sensor/target air gap by rotating each of the wheels :
Front 0.13 mm < air gap over one rotation < 1.96 mm.
Rear 0.03 mm < air gap over one rotation < 2.4 mm (check only possible on vehicles with four-bar
rear axles).
If the fault persists after these checks, replace the hydraulic assembly.
38-24

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEM
Fault finding - Fault chart 38
ABS BOSCH
5.3
AFTER REPAIR Carry out a road test, then a check with the XR25 kit.
yes
PULLINGFault chart 5
Only consult this section after a complete check with the XR25 kit.NOTES
Lift the vehicle so the wheels can be turned
and check for :
- a possible incorrect connection in the
speed sensors,
- a possible incorrect connection of the
hydraulic assembly piping.
For these two checks, consult and apply the
methods defined in Fault Chart 4.Check the
condition of the ABS targets and that they
conform. Also check the sensor/ target air
gap by rotating each wheel.
If the fault persists, replace the hydraulic
assembly.
If the pedal travel is relatively long, bleed
the brake circuit.
If it is normal, check the tyre pressure, the
front axle assembly
or possibly for leaks in the circuit.
no
Remove the 10A ABS fuse on the passenger
compartment connection unit and carry out
a road test with the ABS non-operational.
Does the fault persist under these
conditions?
38-25

B76531.0
ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEM
Fault finding - Fault chart 38
ABS BOSCH
5.3
AFTER REPAIR Carry out a road test, then a check with the XR25 kit.
UNEXPECTED ABS OPERATION AT LOW SPEEDS AND
WHEN LITTLE PRESSURE APPLIED TO BRAKE PEDALFault chart 7
It is possible to feel brake pedal vibrations which are linked to reactions of the system in particular
situations :
- Crossing speed bumps.
- Rear inside wheel lifts on tight bends.
If the problem is different, check the speed sensors connectors ( micro-breaks) as well as the air gaps.
Only consult this section after a complete check with the XR25 kit.NOTES
38-27

1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of XR25 bargraphs
Bargraph 5 left hand side illuminated Fiche n° 49
Resistance on the driver’s airbag line
XR25 aid :*05 : CC : Short-circuit
CO : Open circuit
5
Never carry out measurements on the trigger lines with equipment other than the
XRBAG.NOTES
Lock the computer with the command G80* on the XR25.
Switch off the ignition and remove the two mounting bolts of the steering wheel cushion.
Check that it is correctly connected.
Disconnect the steering wheel cushion and connect a dummy ignition module to the ignition module
connector . Switch on the ignition and carry out an XR25 check.
Replace the airbag cushion if the fault has been memorised (fault no longer declared).
The XRBAG tool MUST be used for checking resistance at point C2 of the driver’s airbag circuit.
If the value obtained is not correct, replace the rotary switch below the steering wheel.
Reconnect the rotary switch below the steering wheel, disconnect the computer connector and fit the 30
track adaptor.
The XRBAG tool MUST be used for checking resistance on the wire marked B on the adaptor.
If the value obtained is not correct,
check the 30 track connector connection (tracks 10 and 11) and
replace the wiring if necessary.
If the checks carried out have not proven the existence of a fault, replace the airbag computer (consult
the section "Aid" for this operation).
Reconnect the driver’s airbag ignition module and remount the steering wheel cushion.
With the ignition switched off, disconnect, then reconnect the connector for the rotary switch below the
steering wheel.
Operate on the connection if bargraph 5 left hand side begins to flash .
Erase the computer memory using the command G0** then switch off the ignition.
carry out another check with the XR25 and, if there is no fault, unlock the
computer using command G81*.
Destroy the airbag cushion if it has been replaced (tool Elé. 1287).
AFTER REPAIR
88
88-10

1EC761.0
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of XR25 bargraphs
Bargraph 5 right hand side illuminated Fiche n° 49
Insulation of driver’s airbag line
XR25 aid :*25 : CC.1 : Short circuit at 12 volts
CC.0 : Short circuit to earth
5
Never carry out measurements on the trigger lines with equipment other than the
XRBAG.NOTES
Lock the computer using command G80* on the XR25.
Switch off the ignition and remove the two mounting bolts of the steering wheel cushion .
Check the condition of the trigger wire.
The XRBAG tool MUST be use for measuring insulation appropriate to the type of fault at point C2 of the
driver’s airbag circuit .
If the value obtained is not correct , replace the rotary switch under the steering wheel .
Reconnect the rotary switch under the steering wheel , disconnect the computer connector and fit the 30
track adaptor.
The XRBAG tool MUST be used for measuring insulation appropriate to the type of fault on the wire
marked B on the adaptor.
If the value obtained is not correct , check the 30 track connector connection (tracks 10 and 11) and
replace the wiring if necessary.
If the checks carried out have not proven the existence of a fault, replace the airbag computer (consult
the section "Aid" for this operation).
Reconnect the driver’s airbag ignition module and remount the steering wheel cushion.
Erase the computer memory using the command G0** then switch off the ignition.
Carry out another XR25 check and if there is no fault, unlock the computer using
command G81*.
Destroy the airbag cushion if it has been replaced (tool Elé. 1287).
AFTER REPAIR
88
88-11