instrument panel RENAULT TWINGO 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-11V3 MR-413-X44-38C050$030.mif
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

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-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-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-18V3 MR-413-X44-38C050$090.mif
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-29
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
DF020
PRESENTTACHOMETRIC INDEX PROGRAMMING1. DEF: tachometric index not programmed
NOTESNone.
The ESP computer with the tachometric function 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 X index using command VP007 Tachometric index on the diagnostic tool.
Once the index has been entered using command VP007 Tachometric index, clear the computer fault memory
and then switch off the ignition.
Use parameter PR030 Tachometric index to check that the index entered is being used correctly by the system.
ESP_V05_DF020

38C-55
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
DF186
PRESENT
OR
STOREDNO INSTRUMENT PANEL MULTIPLEX SIGNAL
NOTESNote:
When the fault in the instrument panel has been repaired, clear the ESP fault
memory.
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 instrument panel using the diagnostic tool (see 83A, Instrument panel).
Run a multiplex network test (see 88B, Multiplex).
ESP_V05_DF186

38C-62
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$102.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF191
PRESENT
OR
STOREDESP ON/OFF BUTTON CIRCUIT
CO.0: Open circuit or short circuit to earth
NOTESSpecial notes:
This fault does not cause the warning lights to come on or a fault message on the
instrument panel.
The ESP is not faulty, but it is no longer possible to disable the ESP using the button.
Apply the interpretation of status ET023 ESP on/off button.
ESP_V05_DF191

38C-86V3 MR-413-X44-38C050$170.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Customer complaints38C
Bosch 8.1 ESP
Vdiag No.: 05
OTHER CASES
No dialogue with the ABS computer ALP1
ESP computer not detected during the multiplex network test on CLIP ALP12
Illumination of brake lights ALP 13
Unexpected ABS operation at low speeds and slight pedal pressure ALP14
Intermittent 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 computerALP15