lights RENAULT TWINGO RS 2009 2.G Chasiss ESP Workshop Manual

38C -2V3 MR-413-X44-38C050$010.mif
38C
Bosch 8.1 ESP
Vdiag No.: 05
1. APPLICABILITY OF THE DOCUMENT
Th is d ocument p resents the fault finding procedure applica ble to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING:
Documentation type
Fault finding procedures (this document):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
–CLIP
Special tooling required
3. REMINDERS
Procedure
To run fault finding on the vehicle computers, switch on the ignition.
Depending on the type of vehicle equipment, proceed as follows:
To cut off + after ignition feed, proceed as follows:Vehicle: New TwingoComputer name: Bosch 8.1 ESP
Function concerned: Bosch ESPVdiag No.: 05
Special tooling required
Multimeter
Elé. 1681Universal bornier
For vehicles with key/radio frequency remote control, use the key to switch on the ignition.
For vehicles with a Renault card,
–with the vehicle card in the card reader,
–press and hold the start button (longer than 5 seconds) with start-up conditions not fulfilled,
connect the diagnostic tool and perform the required operations.
For vehicles with key/radio frequency remote control, use the key to switch off the ignition.
For vehicles with a Renault card,
press the Start button twice briefly (less than 3 seconds),
ensure that the + after ignition feed has been cut off by checking that the computer indicator lights on the instrument
panel have gone out.
ESP_V05_PRELI
ANTI-LOCK BRAKING SYSTEM
Fault finding – Introduction

38C-12V3 MR-413-X44-38C050$040.mif
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

38C-14V3 MR-413-X44-38C050$060.mif
38C
Bosch 8.1 ESP
Vdiag No.: 05
Fault finding warning lights programming
Instrument panel warning light Meaning
Brake faultsABS system ESP SERVICE STOP"Brake limiter", ABS, and
ESP functions not working
ABS system ESP SERVICEESP and ABS functions not
working, "brake limiter"
operational
ESP SERVICEESP function not working, ABS
and "brake limiter"
operational
ESP
"Wheel traction control"
function deactivated by fault
finding orESPmomentarily
disco nnected a fter the battery is
disconnected
Brake faults
flashing
at 2 H z (slowly)ABS flashing
at 2 Hz
(slowly)ESP flashing
at 2 Hz (slowly)ESP computer in fault finding
mode
ESP flashing
at 8 Hz
(quickly)ESP or "wheel traction control"
or "anti-lock brake system on
engine torque control" active
ABS flashing
at 8 Hz
(quickly)Tachometric index not
programmed
Brake faults ABS systemESP flashing
at 8 Hz
(quickly)SERVICE STOPVehicle variant not
programmed
Brake faultsABS flashing
at 8 Hz
(quickly)ESP flashing
at 8 Hz
(quickly)STOPVehicle option and tachometric
index not programmed
Note:
The STOP warning light is always accompanied by a single audible warning (1 beep).
ANTI-LOCK BRAKING SYSTEM
Fault finding – Defect and safe modes

38C-15V3 MR-413-X44-38C050$070.mif
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-40
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
DF086
PRESENT
OR
STOREDCOMPUTER CONFIGURATION
DEF: incorrect vehicle configuration
NOTESNone.
Configure the inhibition or authorisation of the automatic brake lights (according to the legislation of the country).
Using command VP021 Automatic brake light inhibition:
Configure the inhibition of the automatic brake lights using command VP021 Automatic brake light inhibition
Using command VP022 Automatic brake light authorisation:
Configure the authorisation of the automatic brake lights using command VP022 Automatic brake light
authorisation.
ESP_V05_DF086

38C-48
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
DF098
PRESENT
OR
STOREDNO UCH MULTIPLEX SIGNAL
NOTESSpecial notes:
Even though this is stored in the computer, this fault does not cause the warning lights
to come on or a fault message, because the ESP system is not faulty.
Perform fault finding on the UCH (Passenger compartment connection unit) using
the diagnostic tool.
Note:
After repairing the fault in the UCH (Passenger compartment connection unit),
clear the fault memory in the ESP system.
Priority in the event of a number of faults:
Deal with fault DF152 Multiplex network first if it is present or stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present when the engine is started.
Check the UCH (Passenger compartment connection unit) using the diagnostic tool (see 87B, Passenger
compartment connection unit).
Run a multiplex network test (see 88B, Multiplex).
ESP_V05_DF098

38C-56
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
DF187
PRESENT
OR
STOREDBRAKE LIGHT ACTIVATION RELAY CIRCUIT
DEF: open circuit or short circuit
NOTESSpecial notes:
If this fault appears after running command AC187 Brake light activation relay,
ignore this fault.
Use the Wiring Diagram Technical Note for New Twingo.
Are the brake lights continuously lit?
YESConnector of components 1281, 1094 and intermediate union R107 disconnected,
Check the insulation to earth of connection 4GJ between component 1281
and intermediate union R107.
Check the insulation to earth of connection 4GJ between intermediate union R107
and component 1094.
If the connections are faulty (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If all these checks are in order, replace component 1281.
ESP_V05_DF187

38C-57
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
DF187
CONTINUED
NOCheck that the "Automatic brake light" function is activated using status
ET030 Automatic brake light.
If the status ET030 "Automatic brake lights" is "PROHIBITED":
inhibit or authorise the automatic brake lights (depending on the country's legislation)
using command VP021 Automatic brake light inhibition or VP022 Automatic brake
light authorisation.
Check the condition and position of fuse F5 (15 A) in the passenger compartment
fuse box (see 81C, Fuse box).
Connector of components 1281, 1094 and intermediate union R107 disconnected,
Check the continuity of connection 4GJ between component 1281 and intermediate
union R107.
Check the continuity of connection 4GJ between intermediate union R107
and component 1094.
If the connections are faulty (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
With the connector of components 1281 and 1016 disconnected, check the continuity
and insulation of connection AP10 between components 1016 and 1281.
If the connection is faulty (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If all these checks are in order, replace component 1281.