brake sensor RENAULT TWINGO RS 2009 2.G Chasiss ESP User Guide

38C-43
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool
If the fault is still present, contact the Techline.
V3 MR-413-X44-38C050$101.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF091
PRESENT
OR
STOREDFRONT LEFT-HAND WHEEL TARGET
NOTESPriorities when dealing with a number of faults:
Deal with fault DF006 Front left wheel speed sensor circuit first if it is present.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Visually inspect the condition of the axle assemblies (impacts, deformations etc.) and the conformity and good
condition of the tyre mountings (see MR 411, Mechanical systems, 35A, Wheels and tyres, Tyres,
Identification and Tyre pressure, Identification).
Replace the tyre(s) if necessary (see MR 411, Mechanical, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Check that the braking system (condition of brake pads, sealing, sticking, bleed, bearing clearance, etc.) is in good
condition.
Visually inspect the condition of the target (for clogging, metallic contamination, bearing grease, etc.) and clean
using compressed air if necessary.
Check that the wheel speed sensor mounting is in good condition.
Check the sensor/target air gap through one wheel revolution (0.4 < front wheel air gap < 1.7 mm).
If the air gap is incorrect:
–Replace the instrumented bearing/wheel sensor mounting assembly if necessary (see MR 411, Mechanical,
31A, Front axle components, Hub carrier bearing: Removal - Refitting).
If the air gap is correct.
–Swap both front wheel speed sensors.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF091 has become DF090 Front right-hand wheel target, replace the magnetic
target (see MR 411, Mechanical, 31A, Front axle components, Front hub carrier bearing: Removal –
Refitting).
–If the fault remains on the same side, replace component 153 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Front wheel speed sensor, Removal - Refitting).
ESP_V05_DF091

38C-44
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool
If the fault is still present, contact the Techline.
V3 MR-413-X44-38C050$101.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF092
PRESENT
OR
STOREDREAR RIGHT-HAND WHEEL TARGET
NOTESPriorities when dealing with a number of faults:
Deal with fault DF027 Rear right-hand wheel speed sensor circuit first if it is present.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Visually inspect the condition of the axle assemblies (impacts, deformations etc.) and the conformity and good condition
of the tyremountings (seeMR 411, Mechanical systems, 35A, Wheels and tyres, Tyres, IdentificationandTy re
pressure, Identification).
Re place the tyre(s) if necessary (seeMR 411, Mechanical, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Check that the braking system (condition of brake pads, sealing, sticking, bleed, bearing clearance, etc.) is in good
condition.
ESP_V05_DF092

38C-45
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool
If the fault is still present, contact the Techline.
V3 MR-413-X44-38C050$101.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF092
CONTINUED
Check that the wheel speed sensor mounting is in good condition.
Visually inspect the condition of the target (for clogging, metallic contamination, bearing grease, etc.) and clean
using compressed air if necessary.
For versions equipped with disc brakes:
Check the sensor/target air gap through one wheel revolution (0.1 < rear wheel air gap < 0.9 mm).
If the air gap is incorrect:
–Replace the instrumented bearing/wheel sensor mounting assembly (see MR 411, Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
If the air gap is correct.
–Swap both rear wheel brake discs as well as the brake pads.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF092 has become DF093 Rear left-hand wheel target, replace
the instrumented bearing/wheel sensor mounting assembly (see MR 411 Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
–If the fault remains on the same side, replace component 150 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Wheel speed sensor, Removal - Refitting).
For versions equipped with drum brakes:
–Swap both rear wheel brake drums.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF092 has become DF093 Rear left-hand wheel target, replace the target
(see MR 411, Mechanical, 33A, Rear axle components, Rear brake drums, Removal - Refitting).
–If the fault remains on the same side, replace component 150 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Rear wheel speed sensor, Removal - Refitting).

38C-46
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool
If the fault is still present, contact the Techline.
V3 MR-413-X44-38C050$101.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF093
PRESENT
OR
STOREDREAR LEFT-HAND WHEEL TARGET.
NOTESPriorities when dealing with a number of faults:
Deal with fault DF007 Left rear wheel speed sensor circuit first if it is present.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Visually inspect the condition of the axle assemblies (impacts, deformations etc.) and the conformity and good
condition of the tyre mountings (see MR 411, Mechanical systems, 35A, Wheels and tyres, Tyres,
Identification and Tyre pressure, Identification).
Replace the tyre(s) if necessary (see MR 411, Mechanical, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Check that the braking system (condition of brake pads, sealing, sticking, bleed, bearing clearance, etc.) is in good
condition.
ESP_V05_DF093

38C-47
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool
If the fault is still present, contact the Techline.
V3 MR-413-X44-38C050$101.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF093
CONTINUED
Check that the wheel speed sensor mounting is in good condition.
Visually inspect the condition of the target (for clogging, metallic contamination, bearing grease, etc.) and clean
using compressed air if necessary.
For versions equipped with disc brakes:
Check the sensor/target air gap through one wheel revolution (0.1 < rear wheel air gap < 0.9 mm).
If the air gap is incorrect:
–Replace the instrumented bearing/wheel sensor mounting assembly (see MR 411, Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
If the air gap is correct.
–Swap both rear wheel brake discs as well as the brake pads.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF093 has become DF092 Rear right-hand wheel target, replace
the instrumented bearing/wheel sensor mounting assembly (see MR 411 Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
–If the fault remains on the same side, replace component 151 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Wheel speed sensor, Removal - Refitting).
For versions equipped with drum brakes:
–Swap both rear wheel brake drums.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the initially declared fault DF093 became DF092 "Rear right-hand wheel target " , replace the target
(see MR 411 Mechanical system, 33A, Rear axle components, Rear brake drums, removal-refitting).
–If the fault remains on the same side, replace component 151 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Rear wheel speed sensor, Removal - Refitting).

38C-78
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$150.mif
38C
Bosch 8.1 ESP
Vdiag No.: 05
Tool command Diagnostic tool title Comments
RZ001Fault memory This command is used for clearing the computer's stored faults
RZ011Sensor offsetsThis command reinitialises programming of the ESP sensors.
Run this command each time an operation required the steering
wheel angle to be programmed or following any operation on the
axle assemblies.
Also run this command when the combined sensor has been
removed or replaced
SC001Check target teethThis command tests the condition of the teeth on each wheel.
Select the command SC001 and follow the instructions.
The test result should indicate 48 teeth.
SC006Bleed the hydraulic unit and
brake circuitsThis command should only be used if an 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 command SC006 and follow the instructions given by the
diagnostic tool.
AC003Front left-hand wheel solenoid
valvesSee the interpretation of command (see Interpretation of
commands).
AC004Front right-hand wheel
solenoid valvesSee the interpretation of command (see Interpretation of
commands).
AC005Rear left-hand wheel solenoid
valvesSee the interpretation of command (see Interpretation of
commands).
AC006Rear right-hand wheel solenoid
valvesSee the interpretation of command (see Interpretation of
commands).
AC013Wheel speed sensor supply
testSee the interpretation of command (see Interpretation of
commands).
AC016Pump motor testSee the interpretation of command (see Interpretation of
commands).
AC187Brake light activation relaySee the interpretation of command (see Interpretation of
commands).
AC195Vehicle speed signalSee the interpretation of command (see Interpretation of
commands).
AC196Hazard warning light activation
requestSee the interpretation of command (see Interpretation of
commands).
ANTI-LOCK BRAKING SYSTEM
Fault finding – Command summary table

38C-88
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
ALP2 Locking or braking of one or more wheels
NOTESOnly consult this customer complaint after a full check with the diagnostic tool.
Check the conformity of the mechanical components (see MR 411, Mechanical,
30A, General information, Brake, Specifications).
REMINDERLocking of wheels on a vehicle fitted with ABS or squealing of the tyres, which feels like
locking to the customer, may be linked to normal operation of the system and should not
always be considered a fault.
Braking with ABS regulation on very poor roads can cause significant squealing.
However, if the wheel(s) is/are actually locking, lift the vehicle in order to be able to rotate the wheels and check:
Possible inversion when connecting the speed sensors.
Use parameters PR001 Front right-hand wheel speed, PR002 Front left-hand wheel speed, PR003 Rear right-
hand wheel speed and PR004 Rear left-hand wheel speed whilst slowly turning the wheels in question and
checking 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.
If a single reading is incorrect:
–Check that the sensor casing is secured when rotating.
–Check that the wheel speed sensor mounting is in good condition.
–If that is unsuccessful, replace the corresponding sensor and repeat the check procedure (see MR 411
Mechanical, 38C, Anti-lock braking system, Wheel speed sensor: Removal - Refitting).
–A possible inversion of the pipes on the hydraulic unit (see MR 411, Mechanical, 38C, Anti-lock braking
system, Hydraulic braking unit, List and location of components).
Run 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 locking/unlocking cycles on the wheel concerned (see Dealing with
command modes).
If the cycles are not detected on the wheel tested (wheel remains locked), check if they occur on another wheel
(confirmation of a reversal after a repair, see MR 411, Mechanical, 38C, Hydraulic braking unit, List and
location of components).
If the cycles are not detected on a wheel and the pipes have not been inverted, replace component 1094
(see MR 411, Mechanical, 38C, Hydraulic braking unit, Removal- Refitting).
Check that the sensor holder does not rotate (depending on fitting).
Check the quality of the mounting of the wheel speed sensors (correct clipping for the front wheels).
Check the conformity of the targets: the condition and the number of teeth= 48 (using the command SC001
"Check target teeth").
Replace if necessary.
If the fault is still present after these checks, replace component 1094 (see MR 411, Mechanical, 38C, Hydraulic
braking unit, Removal- Refitting).
ESP_V05_ALP2

38C-89
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
ALP3 Pull
NOTESOnly consult this customer complaint after a full check with the diagnostic tool.
Check the conformity of the mechanical components (see MR 411, Mechanical,
30A, General information, Brake, Specifications).
Disconnect one wheel speed sensor.
Start the engine and check that only the ABS
and ESP fault warning lights are lit.
Is the brake fault warning light also lit?Do not drive, the "braking compensator" function
cannot be carried out (risk of a spin).
Deal first with the faults using the diagnostic tool.
Drive the vehicle and operate the brakes.
Is the customer complaint still present
under these conditions?If the brake pedal travel is comparatively long, bleed
the brake circuit (see MR 411, Mechanical, 30A,
General information, Brake circuit, Bleeding).
If the travel is normal, check that the 4 vehicle tyres
are identical and in accordance with the
manufacturer's recommendations (see MR 411,
Mechanical, 35A, Wheels and tyres, Tyre, Tyre
pressure, Identification and Tyre, Identification).
Check and adjust the wheel alignment (see MR 411,
Mechanical, 30A, General information, Front
axle, Adjustment).
Check for any leaks on the brake circuit.
Apply the fault finding procedure described in the ALP 2
"Locking of one or several wheels".
YES
NO
YES
NO
ESP_V05_ALP3

38C-90
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
ALP4 Drift
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Disconnect one wheel speed sensor.
Start the engine and check that only the ABS
and ESP fault warning lights are lit.
Is the brake fault warning light also lit?Do not drive, the "braking compensator" function
cannot be carried out (risk of a spin).
Deal first with the faults using the diagnostic tool.
Drive the vehicle and operate the brakes.
Is the customer complaint still present
under these conditions?It is a road holding fault not related to the ABS/ESP
system.
Check the condition and conformity of the front and
rear brake linings.
Check that the 4 vehicle tyres are identical and in
accordance with the manufacturer's
recommendations (see MR 411, Mechanical, 35A,
Wheels and tyres, Tyre pressure, Identification
and Tyres, Identification).
Check that the pressures of the 4 tyres conform to
the manufacturer's recommendations (see MR 411,
Mechanical, 35A, Wheels and tyres, Tyre
pressure, Identification).
Check and adjust the wheel alignment (see MR 411,
Mechanical, 30A, General information, Front
axle, Adjustment).
Normal behaviour linked to the system operation during the
regulation phase, mainly on surfaces with uneven grip or
which are poorly laid.
YES
NO
YES
NO
ESP_V05_ALP4

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