length RENAULT TWINGO RS 2009 2.G Chasiss ABS Workshop Manual

38C-61
MR-413-X44-38C000$846_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Dealing with command modes
MK70 ABS
Vdiag No: 04
38C
AC153
AC154
AC155
AC156BLEED FRONT LEFT-HAND WHEEL
BLEED FRONT RIGHT-HAND WHEEL
BLEED REAR LEFT-HAND WHEEL
BLEED REAR RIGHT-HAND WHEEL
NOTESConditions of use of the command.
Ignition on, engine stopped and vehicle speed zero.
Before using the commands, check that the battery is fully charged.
These 4 commands should only be used if you observe lengthening of the brake pedal travel during a road test
with ABS regulation (the system should have been bled in advance using the conventional procedure).
See ALP8.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_AC153 / ABS_V04_AC154
ABS_V04_AC155 / ABS_V04_AC156

38C-73
MR-413-X44-38C000$940_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Fault Finding Chart
MK70 ABS
Vdiag No: 04
38C
ALP 8Lengthening 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.
Check the conformity of the mechanical components.
Air transit from the hydraulic unit regulation channels to the brake circuits.
Using the following diagnostic tool commands:
AC155: Rear left wheel bleed.
AC154: Front right wheel bleed.
AC156: Rear right wheel bleed.
AC153: Front left wheel bleed.
Carry out a bleed of the secondary circuits starting with the left-hand rear brake then the right-hand front brake,
the right-hand rear brake then the left-hand front brake.
After the operation, carry out a road test with ABS regulation.
If the fault is still present, carry out the above operation again 1 or 2 times.
If the customer complaint is particularly serious, and bleeding the circuit does not improve matters, replace the
hydraulic unit.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_ALP8