steering RENAULT TWINGO 2009 2.G Chasiss ESP Workshop Manual

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ANTI-LOCK BRAKING SYSTEM
Fault finding – List and location of components
Bosch 8.1 ESP
Vdiag No.: 05
38C
Steering wheel angle sensor:
–Located on the steering column, on the intermediate shaft side.

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38C
Bosch 8.1 ESP
Vdiag No.: 05
Number Description
1Computer/hydraulic unit assembly
2Steering wheel angle
3Torque setpoint on the engine management computer
4Sequential gearbox operating phase (if fitted)
5Instrument panel
6Diagnostic socket
7 UCH
8Vehicle speed wire
9Brake light control relay
10Combined sensor: lateral acceleration and yaw speed
11Brake disc with instrumented bearing target
12Wheel speed sensor
13Battery
14Traction control deactivation button (Only on RS version)
15Brake switch
Electric circuit
Hydraulic circuit
Private multiplex line
Vehicle multiplex line
ANTI-LOCK BRAKING SYSTEM
Fault finding – Functional diagram

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38C
Bosch 8.1 ESP
Vdiag No.: 05
EBD (electronic braking distribution):
The electronic braking distribution unit optimises the brakeforce distribution between the front and rear axles.
This function ensures vehicle stability under braking.
ABS (anti-lock braking system):
The ABS prevents the wheels from locking when braking. This function allows the vehicle to be steered under
braking and ensures vehicle stability under braking.
MSR (engine torque control):
This is a function that enhances the ABS function. Its purpose is to prevent the drive wheels from spinning
excessively when lifting off the accelerator or changing down a gear on a low grip surface, by requesting the engine
management to regulate the driving torque of the engine (resisting torque compensation) to "relaunch" the wheels.
ASR (wheel traction control):
This function keeps the drive wheels from slipping during starting or acceleration.
The system brakes the wheel in a slippage situation to maintain full traction.
ESP: Electronic stability program:
The ESP guarantees within physical limits the dynamic stability of the vehicle by checking and correcting oversteer.
In any case, the ESP system does not intervene in place of the driver. Using data from the steering wheel, it merely
makes vehicle handling truer to the driver's intention.
CDC (Dynamic Driving Control):
The Dynamic Driving Control guarantees vehicle steerability within physical limits by checking and correcting
understeer.
The Dynamic Driving Control is an advancement of the ESP system and has same objective: to maintain vehicle
control in all operating situations.
The ESP computer supplies the other computers with information on the vehicle speed via a wire connection for the
radio, the power-assisted steering and the electric sunroof, and via the multiplex network for the other computers.
The ESP computer also supplies the multiplex network with the odometry for the instrument panel and navigation
system.
If heavy braking produces very rapid deceleration, the ESP computer issues a request to the UCH (passenger
compartment connection unit) via the multiplex network asking it to switch on the hazard warning lights (depending
on the law in the relevant country).
ANTI-LOCK BRAKING SYSTEM
Fault finding – Features

38C-13V3 MR-413-X44-38C050$050.mif
38C
Bosch 8.1 ESP
Vdiag No.: 05
Wheel speed sensors:
Give the speed of each of the vehicle's wheels. The analysis of the sensors allows the calculation of the vehicle
speed.
Brake lights switch:
Signals the position of the brake pedal (pressed or released).
Combined sensor (Dual sensor):
Indicates the lateral acceleration and the yaw speed of the vehicle. The analysis of these data combined with the
data from the other sensors allows the determination of the vehicle's path.
Steering wheel angle sensor:
Angular indication of the desired path of the vehicle.
ANTI-LOCK BRAKING SYSTEM
Fault finding – Role of components

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38C
Bosch 8.1 ESP
Vdiag No.: 05
REPLACING THE COMPUTER:
When replacing the computer (see MR 411, Mechanical, 38C, Anti-lock braking system, Braking computer:
Removal - Refitting), use the following procedure:
–Switch off the ignition.
–Replace the computer.
–Enter the VIN number using command VP001 Enter VIN (see Configurations and Programming).
–Configure the tachometric index using command VP007 Tachometric index (see Configurations and
programming).
–Configure the vehicle parameters using command VP004 Vehicle parameters (see Configurations and
programming).
–Inhibit or authorise illumination of the automatic brake lights (depending on the country's legislation) using
command VP021 Inhibit automatic brake lights or VP022 Authorise automatic brake lights.
–Clear the ESP sensor offsets using command RZ011 Sensors offsets (see Configurations and programming).
–Enter the After-Sales date using command VP006 Enter last APV* operation date.
–Perform a road test followed by a fault reading to confirm that the system is operating correctly.
REPLACING THE STEERING WHEEL ANGLE SENSOR:
–Calibrate the steering wheel angle sensor using command VP003 Steering wheel angle sensor (see
Configurations and programming).
–Clear the ESP sensor offsets using command RZ011 Sensor offsets.
REPLACING THE COMBINED SENSOR:
–Clear the ESP sensor offsets using command RZ011 Sensor offsets.
* APV: After-Sales
ANTI-LOCK BRAKING SYSTEM
Fault finding – Replacement of components

38C-16V3 MR-413-X44-38C050$080.mif
38C
Bosch 8.1 ESP
Vdiag No.: 05
Parameters:
VP001: Enter VIN
This command allows the vehicle identification number to be entered into the computer.
Use this command each time the computer is replaced. The VIN (VF...) is engraved on the manufacturer's plate on
the front right-hand door pillar and stamped on the body under the windscreen on the left-hand side.
VP003: Steering wheel angle sensor
This command is used to calibrate the steering wheel angle.
With the steering wheel horizontal and the front wheels set straight ahead, calibrate the steering wheel angle sensor
using command VP003 on the diagnostic tool.
VP004: Vehicle parameters
This command configures the engine type configuration, the braking definition and the body type. Select the
command VP004 on the diagnostic tool.
VP006: Enter last After-Sales operation date
Whenever the ABS system is worked on in the shop, the date must be entered.
Select command VP006 on the diagnostic tool.
Enter the service date using the diagnostic tool keypad.
VP007: Tachometric index
This command is used to program the computer memory with the index required to calculate the vehicle speed
according to the tyre size.
The BOSCH 8.1 ESP computer supplies the vehicle speed signal to all areas where this information is needed
(instrument panel, engine management, etc.). This vehicle speed signal replaces the one supplied by the speed
sensor located on the gearbox.
The ESP computer calculates the vehicle speed from the wheel speed and the tyre circumference.
The tyre circumference must be programmed into the memory of a new computer. This consists of entering an index
"X" using the command VP007 "Tachometric index" on the diagnostic tool.
Once the number has been entered using the VP007 command, delete the fault in the computer memory and then
switch off the ignition. Use parameter PR030 "Tachometric index" to check that the index entered has been
recognised by the system.
VP021: Inhibit automatic brake lights
This command deactivates the automatic brake lights.
Select command VP021 on the diagnostic tool.
VP022: Automatic brake lights authorisation
This command authorises the automatic brake lights.
Select command VP022 on the diagnostic tool.
* APV: After-SalesNote:
The vehicle speed is supplied by a wire (connection 47F) to the radio, to the electric power-assisted
steering, to the electric sunroof and by the multiplex network for the other computers.
ANTI-LOCK BRAKING SYSTEM
Fault finding – Configurations and programming

38C-17V3 MR-413-X44-38C050$090.mif
38C
Bosch 8.1 ESP
Vdiag No.: 05
Tool faultAssociated
DTCDiagnostic tool title
DF00150 Short
circuitComputer supply
DF006 501FFront left-hand wheel speed sensor circuit
DF007 503FRear left-hand wheel speed sensor circuit
DF011 50 CBSolenoid valve supply
DF017 50C3Computer
DF020 50C3Tachometric index programming
DF026 500FFront right-hand wheel speed sensor circuit
DF027 502FRear right-hand wheel speed sensor circuit
DF055 50C3Vehicle parameter programming
DF063 5046Wheel speed inconsistency
DF066 5180No injection multiplex signal
DF075 5158Steering wheel angle sensor signal
DF086 50C3Computer configuration
DF087 5158Steering wheel angle sensor programming
DF090 5041Front right-hand wheel target
DF091 5042Front left-hand wheel target
DF092 5043Rear right-hand wheel target
DF093 5044Rear left-hand wheel target
DF098 5183No UCH multiplex signal
DF099 50F4Private multiplex network
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault summary table

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ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault summary table38C
Bosch 8.1 ESP
Vdiag No.: 05
* inj: InjectionTool faultAssociated
DTCDiagnostic tool title
DF100 5158Steering wheel angle multiplex signal absent
DF108 5158Steering wheel angle sensor
DF126 50F4Combined sensor signal plausibility
DF152 50E6Multiplex network
DF153 50C3Multiplex network
DF186 5182No instrument panel multiplex signal
DF187 50CEBrake light activation relay circuit
DF188 50C6Brake light switch circuit
DF189 50F4Combined sensor circuit
DF190 50F4Combined sensor
DF191 50C9ESP on/off button circuit (only on RS version)
DF193 5180Invalid inj.* multiplex signals
DF202 5183Invalid UCH multiplex signals
DF216 5158Steering wheel angle programming offset
DF300 50CAPump motor control circuit
DF311 5188No sequential gearbox multiplex signal (depending on vehicle)
DF313 5188Invalid sequential gearbox multiplex signals (depending on vehicle)
DF321 5180Clutch switch signal consistency

38C-38
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
DF075
PRESENT
OR
STOREDSTEERING WHEEL ANGLE SENSOR SIGNAL
1. DEF: inconsistency
2. DEF: constant signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after a road test.
1.DEF
NOTESSpecial notes:
Question the customer to find out if he regularly drives on
a speed track. If this is the case, follow the procedure below
but never replace component 583.
Clear the ESP offsets using command RZ011 Sensor offset.
Position the steering wheel straight ahead (the wheels must be directly in line with the vehicle) and read the value
of the steering wheel angle using the parameter PR033 "Steering wheel angle".
If the value is not close to 0 ± 5˚, calibrate component 583 using command VP003 Steering wheel angle sensor
(see Configurations and programming).
Clear the ESP sensor offsets using command RZ011 Sensor offset.
With the steering wheel horizontal and the front wheels set straight ahead, turn the steering wheel a quarter of
a turn to the left.
Using parameter PR033 Steering wheel angle, check that the steering wheel angle value is close to - 90.
With the steering wheel horizontal and the front wheels set straight ahead, turn the steering wheel a quarter of
a turn to the right.
Using parameter PR033 Steering wheel angle, check that the steering wheel angle value is close to + 90.
If the steering wheel angle values are not correct, replace component 583 (see MR 411, Mechanical, 36A,
Steering assembly, Steering column, Removal - Refitting).
Drive in a straight line.
If the steering wheel is not horizontal when the vehicle is driving in a straight line (the vehicle "pulls" to the left
or right):
Check the conformity of the tyres, pressures, wear and dimensions (see MR 411, 35A, Wheels and tyres, Tyres,
Identification and tyre pressure, Identification).
Replace the tyre(s) if necessary (see MR 411, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Adjust the wheel alignment (see MR 411, Mechanical, 30A, General information, Front axle: Adjustment).
Calibrate component 583 using command VP003 Steering wheel angle sensor (see Configurations
and programming).
Clear the ESP sensor offsets using command RZ011 Sensor offsets.
ESP_V05_DF075

38C-39
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
DF075
CONTINUED
2.DEFNOTESNone.
Clear the ESP offsets using command RZ011 Sensor offset.
When stationary, turn the steering wheel from left to right and check that the value changes using parameter PR033
Steering wheel angle.
If the value is inconsistent, replace component 583 (see MR 411, Mechanical, 36A, Steering assembly,
Steering column, Removal - Refitting).