brake RENAULT SCENIC 2007 J84 / 2.G Anti Lock Braking System Bosch 8.0 ABS User Guide
[x] Cancel search | Manufacturer: RENAULT, Model Year: 2007, Model line: SCENIC, Model: RENAULT SCENIC 2007 J84 / 2.GPages: 64, PDF Size: 0.2 MB
Page 49 of 64
ANTI-LOCK BRAKING SYSTEM
Fault finding - Dealing with commands
38C
38C - 49V2 MR-372-J84-38C000$792_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
SPECIAL COMMANDS
SC001:Check target teeth.
This command tests the condition of the teeth on each wheel.
Select command SC001 Check target teeth. The test result should indicate 48 sprockets.
SC006:Bleed the hydraulic unit and brake circuits.
This command must be used only if abnormally long brake pedal travel is noted during a road test with
ABS control (the system must have been bled beforehand by the usual method).
Select the SC006 "Bleed hydraulic unit and brake circuit" command and follow the instructions given
by the diagnostic tool.
ABS 8.0X84 4.0
Page 50 of 64
ANTI-LOCK BRAKING SYSTEM
Fault finding - Customer complaints
38C
38C - 50V2 MR-372-J84-38C000$858_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0FANTI-LOCK BRAKING SYSTEM
Fault finding - Customer complaints
NOTESOnly consult this customer complaint after a complete check with the diagnostic
tool.
FAULTS DETECTED ON BRAKING WITH ABS/BRAKING REGULATION
LOCKING OF ONE OR MORE WHEELS ALP2
PULLINGALP3
DRIFTALP4
UNEXPECTED ABS OPERATION AT LOW SPEEDS AND SLIGHT PEDAL
PRESSUREALP5
UNEXPECTED ABS OPERATION ON A POOR ROAD SURFACE ALP6
UNEXPECTED ABS OPERATION WHEN USING SPECIAL EQUIPMENT (RADIO
TELEPHONE, CB, etc.)ALP7
LENGTHENING OF BRAKE PEDAL TRAVEL FOLLOWING A REGULATION
PHASE (WITH PEDAL RECEDING WHEN ENTERING THE REGULATION
PHASE)ALP8
SPONGY PEDAL ALP9
BRAKE PEDAL VIBRATION ALP10
NOISES FROM THE PUMP, PIPES OR HYDRAULIC UNIT ALP11
OTHER CASES
NO DIALOGUE WITH THE ABS COMPUTER ALP1
"ABS COMPUTER NOT DETECTED" DURING MULTIPLEX NETWORK TEST
ON CLIPALP12
INTERMITTENT ILLUMINATION OF THE BRAKE, ABS, SERVICE AND STOP
FAULT WARNING LIGHTS AND THE MESSAGE “BRAKE FAILURE” ON THE
INSTRUMENT PANEL WITH NO FAULT CODES IN THE COMPUTERALP13
ABS 8.0X84 4.0
MR-372-J84-38C000$858_eng.mif
Page 52 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 52V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP2 Locking of one or more wheels
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Reminder: locking of wheels on a vehicle equipped with ABS or screeching of tyres, perceived by the customer as
locking, may be related to normal operation of the system and should not automatically be assumed to be a fault:
Braking with ABS system regulation on very poor roads (significant grating).
However, if the wheels are actually locking, lift the vehicle in order to be able to turn the wheels and check:
Possible inversion when connecting the speed sensors.
Using parameters PR001, PR002, PR003 and PR004, rotate the wheels slowly and check the consistency of the
results obtained.
If the value measured is zero, rotate the other wheels to confirm an electrical inversion of the sensors and repair
the wiring harness.
Possible inversion of pipes on the hydraulic unit.
Use commands AC003 Front left-hand wheel solenoid valves, AC004 Front right-hand wheel solenoid
valves, AC005 Rear left-hand wheel solenoid valves and AC006 Rear right-hand wheel solenoid valves
while depressing the brake pedal and check for the occurrence of 5 locking/unlocking cycles on the wheel
concerned (see Dealing with commands)
If the 5 cycles do not occur on the wheel tested (wheel remains locked), check whether they occur on another wheel
to confirm transposed pipes.
If the 5 cycles are not detected on a wheel and the pipes have not been subject to inversion, replace the hydraulic
unit.
Check that the wheel speed sensor mounting is in good condition.
Check the conformity of the targets using special command SC001 "Check target teeth": condition, number of
teeth = 48.
If the fault is still present after these checks, contact the Techline.
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP02 /ABS8.0_V0D_ALP02/ABS8.0_V0E_ALP02/ABS8.0_V0F_ALP02 ABS 8.0X84 3.0
Page 53 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 53V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP3 Pull
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Disconnect one wheel speed sensor. Start the
engine and ensure that only the ABS fault warning
light comes on. Do not drive the vehicle if the brake
fault warning light is also lit, as the brake limiter
function is no longer guaranteed to operate correctly.
Carry out a road test with the ABS thus out of order.
Is the fault still present under these conditions?
NO
Raise the vehicle so that you can rotate the wheels
and check:
Possible inversion when connecting the speed
sensors.
Possible inversion of pipes on the hydraulic unit.
To perform these tests, refer to and apply the
procedures defined in ALP2. Check the condition
and conformity of the ABS targets. Also check the
sensor/target air gap by rotating each front and rear
wheel one revolution. If the fault is still present,
contact the Techline.
YESIf the brake pedal travel is relatively long,
bleed the brake circuit. If the travel is
normal, check the tyre pressures, the
front axle, or for any leaks in the circuit.
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP03 /ABS8.0_V0D_ALP03/ABS8.0_V0E_ALP03/ABS8.0_V0F_ALP03 ABS 8.0X84 3.0
Page 54 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 54V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP4 Drift
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Disconnect one wheel speed sensor. Start the
engine and ensure that only the ABS fault warning
light comes on. Do not drive the vehicle if the brake
fault warning light is also lit, as the brake limiter
function is no longer guaranteed to operate correctly.
Carry out a road test with the ABS thus out of order.
Is the fault still present under these conditions?
NO
Normal behaviour linked to the system operation
during the regulation phase, mainly on surfaces with
uneven grip or which are poorly laid.
YESRoad holding fault not related to the ABS.
Check the condition of the brake linings
and that they are to specification and
check the tyre pressures, the front axle,
etc.
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP04 /ABS8.0_V0D_ALP04/ABS8.0_V0E_ALP04/ABS8.0_V0F_ALP04 ABS 8.0X84 3.0
Page 55 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 55V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP5Unexpected ABS operation at low speeds and slight pedal
pressure
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Warning: the ABS is sensitive on slippery surfaces (ice, wet tiles, etc.).
It is possible to feel brake pedal vibrations which are associated with the reaction of the system in particular
circumstances, such as:
crossing rumble strips,
tight cornering with lifting of the inside rear wheel.
These vibrations may be linked to simple brake limiter activation, when the pressure on the rear axle is limited.
If the fault is different, check the speed sensor connectors (micro-breaks) as well as the air gaps.
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP05 /ABS8.0_V0D_ALP05/ABS8.0_V0E_ALP05/ABS8.0_V0F_ALP05 ABS 8.0X84 3.0
Page 58 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 58V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP8Lengthening of the brake pedal travel following a regulation
phase (with an irregular pedal when entering the regulation
phase)
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Air transit from the hydraulic unit regulation channels to the brake circuits.
Bleed the circuits, following the procedure using the diagnostic tool commands (see Dealing with commands).
After the operation, carry out a road test with ABS regulation.
If the fault is still present, carry out the above operation again once or twice.
If the customer complaint is particularly pronounced, and the bleeding procedures have not rectified it, contact the
Techline.
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP08 /ABS8.0_V0D_ALP08/ABS8.0_V0E_ALP08/ABS8.0_V0F_ALP08 ABS 8.0X84 3.0
Page 59 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 59V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP9 Spongy pedal
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Air in the brake circuits.
Carry out a conventional circuit bleed starting with the right-hand rear brake, then the left-hand rear, left-hand
front and right-hand front brakes. Repeat the operation if necessary.
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP09 /ABS8.0_V0D_ALP09/ABS8.0_V0E_ALP09/ABS8.0_V0F_ALP09 ABS 8.0X84 3.0
Page 60 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 60V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP10 Brake pedal vibration
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Normal reaction of the brake pedal during ABS regulation or of limitation of pressure on the rear axle (brake limiter
function).
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP10 /ABS8.0_V0D_ALP10/ABS8.0_V0E_ALP10/ABS8.0_V0F_ALP10 ABS 8.0X84 3.0
Page 61 of 64
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
38C
38C - 61V2 MR-372-J84-38C000$924_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
ALP11 Noise from the pump, pipes or hydraulic unit
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Vibration of the unit: check the presence and the condition of the unit bracket insulating rubber mounting bushes.
Vibration of pipes: check that all the pipes are securely clipped in their retaining clips and that there is no contact
between pipes or between pipes and bodywork.
To determine where the noise is coming from, run the solenoid valve actuation commands Front left-hand wheel
solenoid valves, Front right-hand wheel solenoid valves, Rear left-hand wheel solenoid valves and Rear
right-hand wheel solenoid valves while depressing the brake pedal.
AFTER REPAIRClear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_ALP11/ABS8.0_V0D_ALP11/ABS8.0_V0E_ALP11/ABS8.0_V0F_ALP11 ABS 8.0X84 3.0