ABS RENAULT TWINGO RS 2009 2.G Chasiss ESP Owner's Manual

38C-91
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP5Unexpected ABS operation at low speed and with slight pedal
pressure
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Important: ABS regulation is sensitive on slippery surfaces (ice, wet cobbled
streets, etc.).
Brake pedal vibrations associated with the reactions of the system may be felt in
particular circumstances, such as:
–Crossing speed bumps.
–Tight cornering with lifting of the inside rear wheel.
These vibrations also may be linked merely to activation of the Braking distributor
function, when the pressure on the rear axle is limited.
Check the conformity of the mechanical components (see MR 411, Mechanical,
30A, General information, Brake, Specifications).
If the fault is not one of the situations indicated above, check the correct connection of the wheel speed sensors,
the air gap between these sensors and the magnetic targets.
Refer to the interpretation of fault DF063 Wheel speed consistency.
ESP_V05_ALP5

38C-92
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP6 Unexpected ABS system intervention on a poor road surface
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Check the conformity of the mechanical components (see MR 411, Mechanical,
30A, General information, Brake, Specifications).
On poor road surfaces it is normal to feel hesitation and vibrations of the pedal as well grating which is more
significant than on good surfaces.
This gives the impression of a variation in efficiency, but this should be considered normal.
ESP_V05_ALP6

38C-93
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP7Unexpected ABS operation when using special equipment
(car phone, CB, etc.)
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Check that the equipment which is causing the fault is approved.
Check that this equipment was correctly installed without modification of the original wiring, in particular that of
the ABS/ESP.
Connections to earth and to the ABS/ESP supply are forbidden.
ESP_V05_ALP7

38C-94
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP8Lengthening of the brake pedal travel following a regulation
phase (with an irregular pedal when entering the regulation
phase)
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Check the conformity of the mechanical components (see MR 411, Mechanical,
30A, General information, Brake, Specifications).
Bleed the primary hydraulic circuit (see MR 411, Mechanical, 30A, General information, Brake circuit,
Bleeding).
After the operation, carry out a road test with ABS regulation.
If the fault is still present:
Carry out an After-Sales bleed using command SC006 Bleed hydraulic unit and brake circuit.
After the operation, carry out a road test with ABS regulation.
If the fault is still present:
Bleed the primary hydraulic circuit again (see MR 411, Mechanical, 30A, General information, Brake circuit,
Bleeding).
After the operation, carry out a road test with ABS regulation.
If the customer complaint is particularly pronounced, and bleeding the circuit does not improve matters, replace
component 1094 (see MR 411, Mechanical, 38C, Hydraulic brake unit, Removal - Refitting).
ESP_V05_ALP8

38C-95
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP9 Spongy pedal
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Check the conformity of the mechanical components (see MR 411, Mechanical,
30A, General information, Brake, Specifications).
Bleed the primary hydraulic circuit (see MR 411, Mechanical, 30A, General information, Brake circuit,
Bleeding).
After the operation, carry out a road test with ABS regulation.
If the fault is still present:
Carry out an After-Sales bleed using command SC006 Bleed hydraulic unit and brake circuit.
After the operation, carry out a road test with ABS regulation.
If the fault is still present:
Bleed the primary hydraulic circuit again (see MR 411, Mechanical, 30A, General information, Brake circuit,
Bleeding).
After the operation, carry out a road test with ABS regulation.
If the customer complaint is particularly pronounced, and bleeding the circuit does not improve matters, replace
component 1094 (see MR 411, Mechanical, 38C, Hydraulic brake unit, Removal - Refitting).
ESP_V05_ALP9

38C-96
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP10 Brake pedal vibration
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Check the conformity of the mechanical components and in particular check that the
brake discs are not warped.
It is normal that the brake pedal vibrates during ABS regulation or braking pressure distribution on the front and
rear axles ("braking compensator" function).
ESP_V05_ALP10

38C-98
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP12ABS computer not detected during the multiplex network test
on CLIP
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
After the multiplex network test on CLIP, if the ABS/ESP computer is not detected, carry out the following
operations:
–Return to the home menu of the CLIP screen.
–Switch off the ignition.
–Restart the engine (+ after ignition feed).
–Repeat the multiplex network test.
–If the fault is still present, perform the fault finding described in ALP1 No dialogue with the ABS/ESP computer.
ESP_V05_ALP12

38C-101
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP15Intermittent illumination of brake, ESP, ABS, SERVICE and STOP
warning lights and the message "brake failure" on the instrument
panel with no fault codes in the computer
NOTESSpecial notes:
Only address this customer complaint after a complete check with the diagnostic tool.
Problem with external supply to the computer:
The computer is intermittently without supply because of bad contacts in the electrical
supply circuit.
Refer to the interpretation of fault DF001 Computer supply.
ESP_V05_ALP15