Chassis: Jm0B - Jm0C - Jm0F - Jm0G - Jm0H - Jm0J - Jm0U

Chassis 38C

ANTI-LOCK BRAKING SYSTEM Bosch 8.0 ESP Vdiag-No: 08, 09, 0A, 0B, 11 Introduction Fault finding log System operation Replacement of components Conf Config igur urat atio ion n and and prog progra ramm mmin ing g Fault summary table Interpretation of faults Conformity check Status and parameter summary tables Parameter procedures Dealing with commands Interpretation of statuses Customer complaints Fault finding chart

38C-1 38C-6 38C-8 38C-12 38C38C-13 13 38C-15 38C-16 38C-60 38C-61 38C-62 38C-63 38C-65 38C-68 38C-70

JM0B - JM0C - JM0F - JM0G - JM0H - JM0J - JM0U 77 11 322 262

FEBRUARY 2006

"The repair procedures given by the manufacturer in this document are based on the technical specifications current when it was prepared. The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which his vehicles are constructed."

Edition Anglaise

All rights reserved by Renault s.a.s. Copying or translating, in part or in full, of this document or use of the service part reference numbering system is forbidden without the prior written authority of Renault s.a.s.

© Renault s.a.s. 2006

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138C BOSCH ESP 8.0 Vdiag No.: 08, 09, 0A, 0B, 11

ANTI-LOCK BRAKING SYSTEM Fault finding - Introduction

38C

1. SCOPE OF THIS DOCUMENT This document presents the fault finding procedure applicable to all computers with the following specifications: Vehicle(s): MEGANE II, SCENIC II

Name of computer: ESP 8.0

Function concerned: ESP

Vdiag No.: 08, 09, 0A, 0B, 11

2. PREREQUISITES FOR FAULT FINDING Documentation type Fault finding procedures (this manual): – Assisted fault finding (integrated (integrated into the diagnostic tool), tool), Dialogys. Wiring Diagrams: – Visu-Schéma (CD-ROM), (CD-ROM), paper version. version. Type of diagnostic tools – CLIP Special tooling required Special tooling required Multimeter Elé. 1681

Universal bornier

3. RECAP Procedure To perform fault finding on the vehicle's computers, switch on the ignition in fault finding mode. Proceed as follows: – vehicle's card in reader; reader; – press and hold the the Start button (longer (longer than 5 seconds) seconds) with start-up conditions conditions not present, present, – connect the diagnostic diagnostic tool and perform perform the required required operations. operations. Note: The left and right-hand xenon bulb computers are supplied when the dipped headlights are lit. Therefore fault finding can only be carried out on them after the ignition has been switched on in fault finding mode (forced + after ignition feed) and the dipped headlights have been switched on. To cut off + after ignition feed, feed, proceed as follows: – disconnect the diagnostic diagnostic tool, – press the Start button button twice briefly (less than 3 seconds), – Ensure Ensure that that the + after ignitio ignition n feed feed has has been been cut off by by checking checking that the computer computer indicator indicator lights lights on the instru instrument ment panel have gone out.























BOSCH ESP 8.0 Vdiag No.: 08, 09, 0A, 0B, 11


38C

Faults Faults are declared as either present or stored (depending on whether they appeared in a certain context and have disappeared since, or whether they remain present but have not been diagnosed within the current context). The present or stored or stored status of faults should be taken into consideration when the diagnostic tool is switched on after the + after ignition feed (without any system components being active). For a present fault, fault, apply the procedure described described in the Interpretation of faults section. For a stored fault, fault , note the faults displayed and apply the instructions in the Notes section. If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the fault If the fault is not confirmed, confirmed, check: – the electrical lines lines which correspond correspond to the fault, – the connectors for for these lines (for oxidation, oxidation, bent pins, pins, etc.), – the resistance of the the component detected detected as faulty, – the condition of of the wires (melted or or split insulation, wear). wear).

Conformity check The aim of the conformity check is to check data that does not produce a fault on t he diagnostic tool because the data is inconsistent. Therefore, this stage is used to: – carry out fault finding finding on faults that do not have a fault display, display, and which may correspond correspond to a customer customer complaint. – check that the system is operating operating correctly correctly and that there is no no risk of a fault recurring recurring after repairs. repairs. This section gives the fault finding procedures for statuses and parameters and the conditions for checking them. If a status is not behaving normally or a parameter is outside the permitted tolerance tolerance values, consult the corresponding corresponding fault finding page.

Customer complaints - Fault finding chart If the test with the diagnostic tool is OK but the customer complaint is still present, the fault should be processed by customer complaints. complaints . A synopsis of the general procedure to follow is provided on the following page in the form of a flow chart

























38C

4. FAULT FINDING PROCEDURE Perform a pre-diagnostic on the system

Print the system fault finding log (available on CLIP and in the Workshop Repair Manual or Technical Note)

Connect CLIP

Dialogue with computer?

no Refer to ALP No. 1

yes Read faults

Faults present

no Conformity check

yes The cause is still present

Deal with present faults

no

Fault solved

Deal with stored faults Use fault finding charts (ALPs) The cause is still present

yes

no

Fault solved

The cause is still present

no

Fault solved

























38C

4. FAULT FINDING PROCEDURE (CONTINUED) Wiring check Fault finding problems Disconnecting the connectors and/or manipulating the wiring harness may temporarily remove the cause of a fault. Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not present when the analysis is made (stored fault). Visual inspection Look for damage under the bonnet and in the passenger compartment. Carefully check the fuses, insulators and wiring harness routing. Look for signs of oxidation. Tactile inspection While manipulating the wiring harness, harness, use the diagnostic tool to note any change in fault status from stored to present. Make sure that the connectors are properly locked. Apply light pressure pressure to the connectors. connectors. Twist the wiring harness. If there is a change in status, try to locate the source of the fault. Inspection of each component Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on the insulating section). Make sure that the clips and tabs are properly locked in the sockets. Check that no clips or tabs have been dislodged during connection. Check the clip contact pressure using an appropriate model of tab. Resistance check Check the continuity of entire lines, then section by section. Look for a short circuit to earth, to + 12 V or to another wire. If a fault is detected, repair or replace the wiring harness.

























38C

5. FAULT FINDING LOG

IMPORTANT!

IMPORTANT Any fault on a complex complex system requires requires thorough fault fault finding with the appropriate appropriate tools. The The FAULT FINDING LOG, which should be completed during the procedure, enables you to keep track of the procedure which is carried out. It is an essential document when consulting the manufacturer.

IT IS THEREFORE MANDATORY TO FILL OUT A FAULT FINDING LOG EACH TIME FAULT FINDING IS CARRIED OUT.

You will always be asked for this log: q when requesting technical assistance from Techline, q for approval requests when replacing parts for which approval is mandatory, q to be attached to monitored parts for which reimbursement is requested. The log is needed for warranty reimbursement, reimbursement, and enables better analysis of the parts removed. 6. SAFETY ADVICE Safety rules must be observed during any work on a component to prevent any damage or injury: – make sure that the the battery is properly properly charged to avoid avoid damaging the computers with a low load, – use the appropriate appropriate tools. – It is forbidde forbidden n to carry carry out out a road road test while the the diagnostic diagnostic tool tool is communi communicating cating with the computer, computer, because the ABS and Electronic Braking Distribution (EBD) functions are deactivated. Braking pressure is identical on both vehicle axles (risk of a spin under heavy braking).

























FAULT FINDING LOG System: anti-lock braking system and ESP (Electronic Stability program)

Pages 1/2

List of monitored parts: Computer q

Administrative identification Date

2

0

Log completed by VIN Engine Diagnostic tool

CLIP

Revision q

Customer complaint 1786

Anti-lock braking system not triggered

1787 787

Acc Acciden dental tal tri trigge ggering ing of anti anti-lock braking system

1788

ESP not triggered

1789

Accidental triggering of ESP

Other

q

Warning lights come on

011

When the ignition is switched on

Your comments:

Conditions under which the customer complaint occurs 004

Intermittently

009

Sudden fault

Other

q

1790

005

While driving

Your comments:

Documentation used in fault finding Fault finding procedure used

Type of diagnostic manual:

MR

Technical Note

Assisted fault finding























FAULT FINDING LOG System: anti-lock braking system and ESP (Electronic Stability program) q

Pages 2/2

Computer identification and parts exchanged for the system

Part 1 part no. Part 2 part no. Part 3 part no. Part 4 part no. Part 5 part no. To be read with the Diagnostic tool (Identification screen): Computer part no. Supplier No. Program No. Software version Calibration No. VDIAG q

Faults found with the diagnostic tool Fault no.

q

Present

Fault name

Specification

Conditions under which fault occurs Status or parameter no.

q

Stored

System-specific information

Parameter name

Value

Unit
























ANTI-LOCK BRAKING SYSTEM Fault finding - System operation

38C

The ESP system on this vehicle incorporates the following functions: – ABS (anti-lock braking system). The main functions of the ABS system are electronic front and rear braking distribution (EBD) by controlling rear wheel slip, and preventing the wheels from locking by controlling the slipping of all four wheels. – MSR (engine torque control). Traction control on the driven wheels under no load by limiting the engine braking. – ASR (traction control). It limits skidding of the drive wheels during starting or acceleration phases by limiting the engine torque and braking the wheel(s) which are skidding. – ESP (electronic stability program). Electronic stability program limiting oversteer or understeer by braking certain wheels and controlling the engine torque. – CSV (understeer control). Specific control of situations involving pronounced understeer by significant vehicle braking in conjunction with a specific dynamic stability program. – AUTOMATIC LIGHTING OF HAZARD WARNING LIGHTS. Generation on the CAN network, for the UCH, UCH, of a request for switching on the hazard warning lights in case of braking causing a very hard deceleration (according to the legislation of the country). – AUTOMATIC LIGHTING UP OF BRAKE LIGHTS. For controlling understeering (CSV ( CSV only), the ESP computer controls the lighting up of the brake lights via a relay to give warning of hard deceleration generated by the system (according to the legislation of the country). The system also supplies the other computers with information on the vehicle speed via a wire connection for the xenon bulbs, the radio and the electric sunroof, and via the multiplex network for the other computers. The ABS/ESP computer provides the odometry for the instrument panel and navigation aid over the multiplex network.

IDENTIFICATION From the outside, two factors distinguish an ABS unit from an ABS/ESP unit: – The size size of the units (the (the ABS/ESP unit is bigger than the ABS) ABS) unit. The ABS unit has 8 solenoid valves and the ABS/ESP unit has 12. – The number number of computer tracks tracks (the ABS computer has 26 tracks and the ABS/ESP computer has 46 tracks). tracks).

























38C

FAULT FINDING WARNING LIGHT ILLUMINATION STRATEGYfor Mégane II ph1 and Scénic II ph 1. Instrument panel message Instrument panel warning light

Brake faults

ABS

ESP

SERVICE

ABS

ESP

SERVICE

ESP

STOP

SCENIC II

ESP/ASR* not working

ESP/ASR* not working, faulty braking

Electronic braking regulation and ABS and ESP not working.


ESP/ASR* not working check ABS

ESP and ABS function not working.


ESP function not working, Electronic Braking Distribution and anti-lock braking system working.


SERVICE

Meaning

MEGANE II

ESP

ASR* disconnected

– ESP disconnection button registered or ASR* – ESP temporarily temporarily disconnected disconnected after disconnection of the battery.

ABS flashing at 2 Hz

ESP flashing at 2 Hz

No messa essag ge

No mess messa age

ABS computer is in fault finding mode.

ABS faults faults Brake faults flashing at 8 Hz


Brake faults


Brake faults flashing at 2 Hz.

ABS ABS faults faults flashing at 8 Hz

SERVICE

STOP

No me message

No me message

Vehicle parameters and tachometric index not programmed.

STOP

No message

No message

Vehicle parameters not programmed.

No messa essag ge

No mess messa age

Tachometric index not programmed.

























38C

FAULT FINDING WARNING LIGHT ILLUMINATION STRATEGYfor Mégane II ph 2 and Scénic II ph 2. Instrument panel message Instrument panel warning light

Brake faults

ABS

ABS

ABS flashing at 2 Hz

SCENIC II PH2

Braking fault

Check the ABS

ESP and ABS function not working, electronic braking regulation in backup.

Check the ESP

ESP function not working, electronic braking regulation operational operational and ABS in backup.

ESP

TRACTION CONTROL DEACTIVATED1

– ESP/ASR* disconnection button registered OR – ESP/ASR* temporarily disconnected after disconnection of the battery.


No message

ESP computer in fault finding mode.

ESP

ESP

SERVICE

SERVICE

SERVICE

STOP

Note: 1: On Mégane Sport, this message is replaced by ASR/ESP off . The STOP warning light is always accompanied by a single audible warning (1 beep). *ASR: Traction control

Meaning

Electronic braking regulation and ABS and ESP not working.

ESP

Brake faults flashing at 2 Hz.

MEGANE II PH2



























38C

FAULT FINDING WARNING LIGHT ILLUMINATION STRATEGYfor Mégane II ph 2 and Scénic II ph 2 (continued). Instrument panel message Instrument panel warning light

MEGANE II PH2

ESP flashing at 8 Hz ABS fault faults s flashing at 8 Hz

Brake faults

ABS


SERVICE

STOP

SCENIC II PH2

Meaning

No message

ESP being regulated. ASR* being being regulated regulated.. MSR* being regulated.

No message

Tachometric index and/or speed and/or speed at initialisation not programmed.

No message

Vehicle parameters not programmed. Vehicle parameters and tachometric index not programmed.

ABS fault faults s Brake faults flashing at 8 Hz


STOP

No message

Vehicle parameters and speed at initialisation not programmed. Vehicle parameters and tachometric index and speed at
























ANTI-LOCK BRAKING SYSTEM Fault finding - Replacement of components

38C

REPLACING THE COMPUTER When replacing the computer/pump assembly, follow this procedure: – switch off the ignition, – replace replace the the compute computerr (see (see MR 364 Mecha Mechanical nical or MR 370 Mechanic Mechanical, al, 38C, Anti-loc Anti-lock k braking braking system, system, Hydraulic unit), – enter the VIN using command command VP001, – configure the tachometric tachometric index using using command VP007, VP007, – configure the vehicle vehicle parameters with command VP004. VP004.

For Vdiag 0B or 11: – Configure the vehicle vehicle speed at initialisation with command VP032, VP032, IMPORTANT It is imperative to check that the parameters selected match the vehicle's description. description. – inhibit or authorise the automatic illumination of the brake brake lights (in accordance accordance with national legislation) using commands VP021 or VP022, – enter the most recent recent After Sales operation operation date using command command VP006, – perform a road test test followed by a fault reading reading to confirm that the system system is operating correctly. correctly.

REPLACING THE COMBINED SENSOR When replacing the combined sensor, you must erase the programming of the ESP sensors with command RZ003 (if available).
























ANTI-LOCK BRAKING SYSTEM Fault finding - Configurations and programming

38C

SETTINGS VP001:

Enter VIN. This command permits manual entry of the vehicle's VIN into the computer. Use this command each time the computer is replaced. The VIN number (VF...) can be found on the manufacturer's plate on the front right-hand door pillar and on the body panel under the left-hand side of the windscreen.

VP004:

Vehicle parameters. This command is used to configure the engine type + braking definition + body type. Select command VP004 on the diagnostic tool (the parameters selected must correspond with the vehicle type).

VP006:

Enter date of the last After-Sales service. The date of the operation must be entered whenever the ESP system is worked on in the workshop. Select command VP006 on the diagnostic tool. Enter the operation date with the tool keyboard.

VP007:

Tachometric index. This command is used to program the computer memory with the index required to calculate vehicle speed from the speed at which the wheels turn. The Bosch 8.0 ESP computer transmits the vehicle speed signal to all areas where this signal 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
























ANTI-LOCK BRAKING SYSTEM Fault finding - Configurations and programming

38C

SETTINGS (continued) VP021:

Automatic brake lights on deactivation. Use this command only in those countries where legislation prohibits the brake lights lighting automatically without the brake pedal being depressed. Brake light activation is not authorised with ESP control (in accordance with national legislation).

VP022:

Automatic brake lights on authorisation. This command is used to reactivate automatic illumination of the brake lights controlled by the ESP system after it has been inhibited with command VP021 (in accordance with national legislation).

VP023:

Automatic ESP reconnection threshold. If the value of PR064 is not 30 mph (50 km/h), use this command to set the automatic ESP reconnection threshold threshold to 30 mph (50 km/h).

VP032:

Vehicle speed at initialisation. Vehicle speed transmitted via the multiplex network when the computer is initialised. Select "Type 1" or "Type 2" according to the information supplied by the tool.
























ANTI-LOCK BRAKING SYSTEM Fault finding - Fault summary table

Tool fault

Associated DTC

DF001

50CC

Computer supply

DF006

501F

Front left-hand wheel speed sensor circuit

DF007

503F

Rear left-hand wheel speed sensor circuit

DF017

50C3

Computer

DF020

50C3

Tachometric index programming programming

DF026

500F

Front right-hand wheel speed sensor circuit

DF027

502F

Rear right-hand wheel speed sensor circuit

DF055

50C3

Vehicle parameter programming

DF063

5046

Wheel speed inconsistency

DF066

5180

No injection multiplex signal

DF090

5041

Front right-hand wheel target

DF091

5042

Front left-hand wheel target

DF092

5043

Rear right-hand wheel target

DF093

5044

Rear left-hand wheel target

DF097

5188

No automatic transmission multiplex signal

DF126

50F4

Combined sensor signal plausibility

Diagnostic tool title

38C


























DF001 PRESENT OR STORED

NOTES

ANTI-LOCK BRAKING SYSTEM Fault finding - Interpretation of faults

38C

COMPUTER SUPPLY VOLTAGE 1.DEF: 1.DEF: below below minimu minimum m thre thresho shold ld 2.DEF: 2.DEF: above above maxi maximu mum m thresh threshold old 3.DE 3.DEF: F: abno abnorm rmal al volt voltag age e

Special notes: The fault appears during a road test at a vehicle speed of > 6 mph (10 km/h). km/h). The computer signals an external supply fault. Conditions for applying the fault finding procedure to stored faults: Apply the fault finding finding procedure whether the fault fault is present or stored. stored.

Check the connections and the condition of the battery terminals. Check the condition and position of the ABS/ESP fuses in the engine fuse and relay box. Check the 50A power fuse in position 5 on the power fuse board. Check fuse F13 (25A) on the UPC and the correct locking of the grey 4-track PPH1 connector (Vdiag 44) or























BOSCH ESP 8.0 Vdiag No.: 08, 09



38C

FRONT LEFT-HAND WHEEL SPEED SENSOR CIRCUIT CO.0 CO.0 : open open circui circuitt or or shor shortt circu circuit it to earth earth 1.DEF: internal internal electroni electronic c fault fault of the senso sensor r 2.DEF: magnetic/ magnetic/mech mechanica anicall target target fault

Vdiag No.: 08 and 09

NOTES

Special notes: The wheel speed sensors are supplied with + 12 V after ignition but it is not possible to measure this feed on Vdiag 08 and 09 (supply cut off when the sensor is faulty). Conditions for applying the fault finding procedure to stored faults: The fault is declared present following a road test at a speed of > 36 mph (60 km/h).

























DF006 CONTINUED


1.DEF

NOTES

None

Replace the front left-hand wheel speed sensor.

2.DEF

NOTES

None

38C























BOSCH ESP 8.0 Vdiag No.: 0A, 0B, 11


38C

FRONT LEFT-HAND WHEEL SPEED SENSOR CIRCUIT


CO.0 CO.0 : 1.DEF: 2.DEF: 3.DEF: 3.DEF:

open open circui circuitt or or shor shortt circu circuit it to earth earth internal internal electroni electronic c fault fault of the senso sensor r magnetic/ magnetic/mech mechanica anicall target target fault open open circu circuit it or shor shortt circuit circuit

Vdiag No.: 0A, 0B and 11

None. NOTES

CO.0 3.DEF

Conditions for applying the fault finding procedure to stored faults: The fault is declared present following a road test at a speed of > 36 mph (60 km/h).

NOTES

Special notes: Only use command AC013 once.

























DF006 CONTINUED


1.DEF

NOTES

None

Replace the front left-hand wheel speed sensor.

2.DEF

NOTES

None

38C




























ANTI-LOCK BRAKING SYSTEM Fault finding - Interpretation of faults REAR LEFT-HAND WHEEL SPEED SENSOR CIRCUIT CO.0 CO.0 : open open circui circuitt or or shor shortt circu circuit it to earth earth 1.DEF: internal internal electroni electronic c fault fault of the senso sensor r 2.DEF: magnetic/ magnetic/mech mechanica anicall target target fault

38C
























DF007 CONTINUED



38C



























REAR LEFT-HAND WHEEL SPEED SENSOR CIRCUIT CO.0 CO.0 : 1.DEF: 2.DEF: 3.DEF: 3.DEF:

open open circui circuitt or or shor shortt circu circuit it to earth earth internal internal electroni electronic c fault fault of the senso sensor r magnetic/ magnetic/mech mechanica anicall target target fault open open circu circuit it or shor shortt circuit circuit

38C

























DF007 CONTINUED 1


38C

























DF007 CONTINUED 2


38C



























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ANTI-LOCK BRAKING SYSTEM Fault finding - Status and parameter summary tables

Summary table of statuses Tool status


ET017

Brake pedal

ET023

ESP on/off button

ET030

Automatic brake light lighting

Summary table of parameters Tool parameter


PR001

Front right-hand wheel speed

PR002

Front left-hand wheel speed

PR003

Rear right-hand wheel speed

PR004

Rear left-hand wheel speed

PR005

Computer feed voltage

PR007

Longitudinal Longitudinal acceleration

PR016

Lateral acceleration programming programming offset (Vdiag 09, 0A, 0B and 11)

PR020

Vehicle speed at initialisation (Vdiag 0B and 11)

PR030

Tachometric index

PR033

Steering wheel angle

PR034

Yaw angle

PR036

Transverse acceleration

PR038

Vehicle speed

PR055

Number of teeth in the target

PR063

Vehicle parameters

PR064

Automatic ESP reactivation reactivation threshold (Vdiag (Vdiag 08, 09 and 0B)

PR065

Yaw angle programming offset (Vdiag 09, 0A, 0B and 11)

PR066

Steering wheel angle programming offset (Vdiag 09, 0A, 0B and 11)

38C
























ANTI-LOCK BRAKING SYSTEM Fault finding - Parameter procedures

38C

SETTINGS PR001: PR002: PR003: PR004:

Front right-hand wheel speed. Front left-hand wheel speed. Rear right-hand wheel speed. Rear left-hand wheel speed. These parameters parameters specify the speed in mph of each wheel of the vehicle.

PR00 PR005: 5:

Comp Comput uter er sup suppl ply y volt voltag age. e. This parameter shows the + after ignition computer feed voltage in volts.

PR00 PR007: 7:

Long Longitu itudi dina nall acce accele lera ratio tion. n. This parameter gives the vehicle lateral acceleration acceleration in ms-2. It should be 0 when the vehicle is stationary.

PR016: PR016:

Lateral Lateral accel accelerati eration on progr programmin amming g offset offset (Vdiag (Vdiag 09, 09, 0A, 0A, 0B and 11). This parameter gives the correction made by the ESP on the gross value of the lateral acceleration sensor.

PR020: PR020:

Vehicl Vehicle e speed speed at init initial ialisa isatio tion n (Vdia (Vdiag g 0B and and 11) 11) This parameter shows the vehicle speed sent to the multiplex network when the computer is initialised.

PR03 PR030: 0:

Tach Tachom omet etri ric c inde index. x. This parameter specifies the tachometric index entered in the computer for the tyres fitted to the vehicle.

PR03 PR033: 3:

Stee Steeri ring ng whee wheell ang angle le.. This parameter gives the steering wheel angle in degrees. This signal is transmitted by the electric power-assisted steering to the ESP via the multiplex network.

PR034:

Yaw angle. This parameter gives the yaw angle supplied by the dual sensor or combined sensor in 0 when the vehicle is stationary.

/s. It should be

°

PR036:

Lateral acceleration. This parameter gives the lateral acceleration supplied by the dual sensor or combined sensor in g. It should be 0 when the vehicle is stationary.

PR038:

Vehicle spe speed. This parameter specifies the vehicle speed in mph.

PR05 PR055: 5:

Numb Number er of teet teeth h on on the the targ target et.. This parameter shows the number of teeth on the target.

PR06 PR063: 3:

Vehi Vehicl cle e para parame mete ters rs.. This parameter shows whether the configuration (VP004 ( VP004)) matches the vehicle undergoing fault finding.

PR064: PR064:

Automa Automatic tic ESP ESP reacti reactivat vation ion thres threshol hold d (Vdiag (Vdiag 08, 08, 09 and and 0B) This parameter shows the automatic ESP reactivation threshold in mph (km/h) This parameter should be 30 mph (50 km/h). If the value differs, use c ommand VP023. VP023.

PR065: PR065:

Yaw angl angle e progr programm amming ing offs offset et (Vdia (Vdiag g 09, 09, 0A, 0B 0B and and 11) This parameter shows the correction made by the ESP to the raw yaw sensor value.

PR066: PR066:

Steering Steering wheel wheel angle programm programming ing offset offset (Vdiag (Vdiag 09, 09, 0A, 0A, 0B and 11)
























ANTI-LOCK BRAKING SYSTEM Fault finding - Dealing with commands

38C

STATUSES ET017:

Brake pedal. This status gives the position (depressed or released) of the brake pedal

ET023:

ESP On/Off button. This status is used to check the ESP On/Off button operation. This status (pressed or released) is checked by keeping the button pressed.

ET030:

Automatic brake light illumination. This status indicates whether automatic brake lighting is authorised or suppressed during understeer control. The parameters of this status can be modified using commands VP021 and VP022 according to the legislation in force in the country concerned.

CLEARING RZ001:

Fault memory. This command is used for clearing the computer's stored faults.

RZ003:

ESP sensor programming (Vdiag 09, 0A, 0B and 11). This command resets the ESP sensor programming. programming. Run this command every time work on the electric power steering required programming of the steering wheel angle or after any operation on the axle assemblies. Use this command when the combined sensor has been removed or replaced.

CONTROL AC003: AC004: AC005: AC006:

Front left-hand wheel solenoid valves. Front right-hand wheel solenoid valves. Rear left-hand wheel solenoid valves. Rear right-hand wheel solenoid valves. These commands permit a check on the hydraulics of each wheel. Raise the vehicle in order to be able to rotate the wheels, and check that they rotate freely. Keep the brake pedal depressed to prevent the wheel being tested from being turned by hand (do not brake so firmly that full braking power is reached). Select and confirm the command for the wheel concerned (e.g. Front left-hand wheel solenoid valve, etc.) Turn the wheel concerned by hand; you should see it go through 5 locking/unlocking cycles.

AC013:

Test wheel speed sensor feed (Vdiag 0A, 0B and 11). This command is used to check that voltage pulses of approximately approximately 12 V are detected by a multimeter at the sensor connector terminals on the computer side. You must use command AC013 once only.

AC016:

Pump motor test. This command is used to test the pump motor control circuit. Select command AC016 Pump Motor Test. Test. The motor must run for 5 seconds.

AC187:

Brake light activation relay. This command is for testing brake light activation by the ESP when controlling understee understeerr during sharp deceleration.
























ANTI-LOCK BRAKING SYSTEM Fault finding - Dealing with commands

38C

COMMAND (continued) AC195:

Vehicle speed signal. This command sends a speed other t han 0 mph on the computer's vehicle speed wire output (Track 33) to users of that signal (xenon bulbs, radio, sunroof). Note: This command has no visible effect on the dashboard speedometer speedometer needle. Xenon bulbs: Switch on the dipped headlights and run command AC195. AC195. You should see a slight change in the height of the headlight beam (depending on vehicle speed, the height of the beam is adjusted to improve visibility). – Radio: switch on the radio radio and check that that the speed-dependent speed-dependent volume volume control function is active. AC195. AC195 Run command . During the command, you should notice the volume of the sound increase and then decrease. – Sunroof: Sunroof: this command command has no visible effect effect on the sunroof. sunroof. This This command changes the activation activation threshold of the anti-pinch system (the pressure exerted by the sunroof varies with vehicle speed due to aerodynamic factors).

AC196:

Request to switch on hazard warning lights. This command sends the UCH a request to switch on the hazard warning lights to test their operation during emergency braking (depending on UCH configuration).

SPECIAL COMMANDS SC001:

Check target teeth. This command tests the condition of the teeth on each wheel. Select command SC001 Check target teeth. teeth. The test result should show 48 teeth.

SC006:

Bleed the hydraulic unit and brake circuits. Use this command if abnormally long brake pedal travel is noted during a road test with ABS control (the system must have been bled beforehand by the usual procedure). Select the SC006 Bleed hydraulic unit and brake circuit command and follow the instructions given by the diagnostic tool.
























ANTI-LOCK BRAKING SYSTEM Fault finding - Interpretation of statuses

38C

BRAKE PEDAL ET017

NOTES

Special notes: Carry out the checks only if the pressed and released statuses are not consistent with the pedal position.

Released STATUS, brake pedal depressed. depressed.

If the brake lights are working: – Check the continuity of of the connection between between track 1 of the brake brake light switch connector connector and track 30 of of the computer connector. If the brake lights are not working: – Check the brake light light lighting relay. – Check the condition and fitting of the brake brake light switch and brake brake lights fuse. – Remove the brake brake light switch and check that that it is operating correctly: correctly: Contin Continuit uity y betwe between en trac tracks ks

Insula Insulatio tion n betwe between en trac tracks ks

Switch pressed (Brake pedal released)

3 and 4

1 and 2

Switch released (Brake pedal depressed)

1 and 2

3 and 4

– Replace the switch if necessary. necessary. – Check for + for + after ignition feed on tracks 2 and 4 on the brake light switch connector. If the brake lights still fail, check/ensure check/ensure the continuity between track 1 of the switch connector and track 4 of the relay mounting.



























38C

ET017 CONTINUED

Pressed STATUS, Brake pedal released. Check the condition and fitting of the brake light switch, t he brake lights fuse and the conformity of the bulbs. Remove the brake light switch and check that it is operating correctly: Contin Continuit uity y betwe between en trac tracks ks

Insula Insulatio tion n betwe between en trac tracks ks

Switch pressed (Brake pedal released)

3 and 4

1 and 2

Switch released (Brake pedal depressed)

1 and 2

3 and 4

Replace the switch if necessary. Check and if necessary repair the insulation from 12 V on the connection between track 1 of the brake light switch connector and track 30 of the computer connector. connector.

























38C

ESP ON/OFF BUTTON ET023

NOTES

Special notes: Carry out the checks only if the "pressed" and "released" statuses are not consistent with the button position.

STATUS Depressed

Ensure that the ESP start/stop button connector is in good condition and correctly connected. Repair if necessary. Check there is no continuity between switch tracks A2 and B1 in the released position. If there is continuity, replace the switch. Check the continuity and insulation against the earth of the connection between: Switch connector track B1

Track 31 computer connector

STATUS Released

Ensure that the ESP start/stop button connector is in good condition and correctly connected. Repair if necessary. Check the continuity between button tracks A2 and B1 in the pressed position. If there is no continuity, replace the switch. Check for earth on Track A2 of the button connector.























ANTI-LOCK BRAKING SYSTEM Fault finding - Customer complaints


38C

tool. Only consult this customer complaint after a complete check with the diagnostic tool.

NOTES

FAULTS DETECTED ON BRAKING WITH ABS/BRAKING REGULATION

LOCKING OF ONE OR MORE WHEELS

ALP 2

PULLING

ALP 3

DRIFT

ALP 4

UNEXPECTED ABS OPERATION AT LOW SPEEDS AND SLIGHT PEDAL PRESSURE

ALP 5

UNEXPECTED ABS OPERATION ON A POOR ROAD SURFACE

ALP 6

UNEXPECTED ABS OPERATION WHEN USING SPECIAL EQUIPMENT (RADIO TELEPHONE, CB, ETC.)

ALP 7

LENGTHENING OF BRAKE PEDAL TRAVEL FOLLOWING ABS (WITH PEDAL RECEDING WHEN ENTERING ABS)

ALP 8

SPONGY PEDAL

ALP 9

BRAKE PEDAL VIBRATION

ALP 10

NOISES FROM THE PUMP, PIPES OR HYDRAULIC UNIT

ALP 11























ANTI-LOCK BRAKING SYSTEM Fault finding - Customer complaints


38C

Only consult this customer complaint after a complete check with the diagnostic tool.

NOTES

OTHER CASES

NO DIALOGUE WITH THE ABS COMPUTER

ALP 1

"ABS COMPUTER NOT DETECTED" DURING MULTIPLEX NETWORK TEST ON CLIP

ALP 12

FAULTY BRAKE LIGHTS

ALP 13

ERRATIC TRIGGERING OF ESP

ALP 14

ESP WARNING LIGHT COMES ON WITH THE "ASR DISCONNECTED" MESSAGE WHEN THE CURRENT IS SWITCHED ON WITHOUT PRESSING THE ESP DISCONNECTION BUTTON

ALP 15
























ALP 1

NOTES

ANTI-LOCK BRAKING SYSTEM Diagnostic - Fault finding chart

38C

No dialogue with the ABS computer

Special note: To run fault finding on the vehicle's computers, switch on the ignition in fault finding mode (forced + after ignition feed), i.e. proceed as follows: – With the vehicle card in the card reader, reader, press the Start Start button for more than than 5 seconds without starting conditions being met. Check that the CLIP diagnostic tool is equipped with the latest update available.

Try to establish dialogue with a computer on another vehicle to make sure that the diagnostic tool is not faulty. If the tool is not at fault, and dialogue cannot be established with any other computer on the same vehicle, the cause could be a faulty computer interfering on the multiplex network. Check the battery voltage and carry out the operations necessary necessary to obtain the correct voltage (9.5 V < battery voltage < 17.5 V).

Carry out a f ault finding procedure on the multiplex network using the diagnostic tool. tool.

Check the presence and the condition of the ABS fuses on the passenger compartment compartment fuse board and in the engine fuse box. Check that the computer connector is properly connected and check the condition of its connections. Check the ABS earths (good condition, not corroded, earth screw on top of the ABS unit tight). Check that the supply to the computer is correct: – Earth on tracks 1 and and 4 of the 46-track 46-track connector. – + Before ignition feed on tracks 2 and 3 of the 46-track connector. connector. – + After ignition feed feed on track 18 of the 46-track connector. connector.

Check that the power supply to the diagnostic socket is correct: – + before ignition ignition feed on track 16. – + after ignition feed feed on track 1. – Earth on tracks 4 and and 5.

If dialogue has still not been established after these checks, contact Techline.



























38C

ALP 2

Locking of one or more wheels

NOTES

Only consult this customer complaint after a complete check with the diagnostic tool. tool.

Reminder: wheel lock on a vehicle equipped with ABS, or tyre squealing perceived by the customer as locking, may be part of the normal operation of the system and should not be automatically considered as faults: – Braking with ABS on very very poor roads roads (significant squealing). squealing).

However, if the wheels are actually locking, raise the vehicle in order to be able to turn the wheels and check: – Possible inversion when connecting the speed sensors. sensors. Using parameters PR001, PR002, PR003 and PR004, PR004 , rotate the wheels slowly and check 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. – Possible inversion of pipes on the hydraulic hydraulic unit. Use 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 the occurrence of 5 locking/unlocking cycles on the wheel concerned (see Dealing with commands). commands). If the 5 cycles do not occur on the wheel tested (wheel remains locked), check whether they occur on another wheel to confirm transposed pipes. If the 5 cycles are not detected on a wheel and the pipes have not been subject to inversion, replace the hydraulic unit.























ANTI-LOCK BRAKING SYSTEM


Diagnostic - Fault finding chart

38C

ALP 3

Pull

NOTES


Disconnect one wheel speed sensor. Start the engine and check that only the ABS fault warning light comes on. Do not drive the vehicle if the brake fault warning light is also lit, as the brake limiter function is no longer guaranteed to operate correctly. Carry out a road test with the ABS deactivated. Is the fault still present under these conditions? conditions? no

Raise the vehicle so that you can rotate the wheels and check: – Possible inversion when connecting the speed sensors. – Possible inversion of pipes on the hydraulic hydraulic unit. To carry out these two tests, refer to and follow the procedures given in ALP 2. Check the condition of the ABS targets and that they

yes

If the brake pedal travel is relatively long, bleed the brake circuit. If the travel is normal, check the t yre pressures, the front axle, or for any leaks in the circuit.























ANTI-LOCK BRAKING SYSTEM


Diagnostic - Fault finding chart

38C

ALP 4

Drift

NOTES


Disconnect one wheel speed sensor. Start the engine and check that only the ABS fault warning light comes on. Do not drive the vehicle if the brake fault warning light is also lit, as the brake limiter function is no longer guaranteed to operate correctly. Carry out a road test with the ABS deactivated. Is the fault still present under these conditions? conditions? no

Normal behaviour linked to the system operation during the regulation phase, mainly on surfaces with uneven grip or which are poorly laid.

yes

Road handling fault not connected with the ABS. Check the condition of the t he brake linings and that they are to specification and check the tyre pressures, the front axle, etc.

























38C

ALP 5

Unexpected ABS operation at low speed and with slight pedal pressure

NOTES

Only consult this customer complaint after a complete check with the diagnostic tool. tool. Important: ABS regulation may be unresponsive when the vehicle is driven on surfaces such as icy roads, cobbled streets, etc.

It is possible to f eel brake pedal vibrations which are associated with the reaction of the system in particular circumstances, such as: – crossing rumble strips, – tight cornering with lifting of the inside rear wheel. These vibrations may be linked to simple brake limiter activation, when the pressure on the rear axle is limited. If the fault is different, check the speed sensor connectors (micro-breaks) (micro-breaks) as well as the air gaps.

























38C

ALP 6

Unexpected ABS system intervention on a poor road surface

NOTES


On poor road surfaces it is normal to feel bucking and vibration of the pedal as well as more significant tyre squealing than on good surfaces. This gives the impression of a variation in efficiency, but this should be considered normal. normal.


























ALP 7

NOTES


38C

Unexpected ABS operation when using special equipment (car phone, CB, etc.)


Check that the equipment which is causing the fault is approved. Check that this equipment has been correctly installed without modification to the original wiring, in particular, that of the ABS system (connections to earth and + after ignition/before ignition of the ABS are not permitted).

























38C

ALP 8

Lengthening of the brake pedal travel following foll owing ABS regulation (with a pedal receding when entering ABS regulation phase)

NOTES


Air transit from the hydraulic hydraulic unit regulation regulation channels channels to the brake circuits. circuits. Bleed the circuits, following the procedure using the diagnostic tool commands (see Command mode procedures). Following the operation, carry out a road test with ABS regulation.

If the fault is still present, carry out the above operation again 1 or 2 times. If the customer complaint is particularly pronounced, and the bleeding procedures have not rectified it, contact the Techline.

























38C

ALP 9

Spongy pedal

NOTES


Air in the brake circuits. circuits. Bleed the circuits in the conventional way starting with the rear right-hand brake, followed by rear left, front left and finally front right. Repeat the operation if necessary.

























38C

ALP 10

Brake pedal vibration

NOTES


Normal reaction of the brake pedal during ABS regulation or of limitation of pressure on the rear axle (brake limiter function).

























38C

ALP 11

Noise from the pump, pipes or hydraulic unit

NOTES


– Vibration Vibration of of the unit: unit: check check the presen presence ce and the conditio condition n of the the unit bracket bracket insulating insulating rubber rubber mounting mounting bushes. bushes. – Vibration Vibration of of pipes: pipes: check check that all all the pipes are securely securely clipped clipped in their their retainin retaining g clips and that that there there is no no contact contact between pipes or between pipes and bodywork. To determine where the noise is coming from, use the front left-hand wheel solenoid valves, front right-hand wheel solenoid valves, rear left-hand wheel solenoid valves and rear right-hand wheel solenoid valves control commands while depressing the brake pedal.



























38C

ALP 12

ABS computer not detected during the multiplex network test on CLIP

NOTES

Only consult this customer complaint after a complete check with the diagnostic tool. tool. Check that the CLIP diagnostic tool is equipped with the latest update available.

























38C

ALP 13

Faulty brake lights lighting

NOTES


























38C

ALP 14

Erratic ESP regulation

NOTES


























38C

ALP 15

ESP warning light comes on with the "ASR* disconnected or off" message when the current is switched on without wit hout pressing the ESP disconnection button

NOTES

Consult this customer complaint only if the "Service", "ABS" and "Brake" warning lights are not lit.

Chassis: Jm0B - Jm0C - Jm0F - Jm0G - Jm0H - Jm0J - Jm0U

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