Electronically Controlled Hydraulic System

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ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEM

77 11 304 402

"The repair methods 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."

JUNE 2001

All copyrights reserved by Renault.

EDITION ANGLAISE

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.

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38 ELECTRONICALLY CONTROLLED

HYDRAULIC SYSTEM

Electric power assisted steering

Introduction 38-01 Fault interpretation 38-03 Status interpretation 38-15 Parameter interpretation 38-16 Help 38-18 Customer complaints 38-26

Fault finding charts 38-27

Anti-lock braking system

Introduction 38-31

XR25 fiche 38-32

Interpretation of the XR25 bargraphs 38-33

Fault interpretation 38-48

Conformity check 38-49

Help 38-50

Customer complaints 38-51

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FAULT FINDING - INTRODUCTION

GENERAL APPROACH TO FAULT FINDING:

– Use one of the diagnostic tools to identify the system equipping the vehicle (reading the electric power assisted steering computer).

– Locate the Fault finding documents corresponding to the system identified. – Take note of information contained in the introductory sections.

– Read the faults stored in the computer memory and use the Fault interpretation section of the documents.

Reminder: Each fault is interpreted for a particular type of storage (fault present, fault stored in memory, fault present or stored). The checks defined for handling each fault are therefore only to be performed if the fault shown by the diagnostic tool is interpreted in the document for its type of storage. The type of storage should be considered when setting up the diagnostic tool when the ignition is switched off and back on again.

If a fault is interpreted when it is declared stored, the conditions for application of the diagnostic routine appear in the NOTES box. When these conditions are not satisfied, use the fault finding procedure to check the circuit of the faulty part since the fault is no longer present on the vehicle. Follow the same procedure when a fault is declared stored by the diagnostic tool but is only interpreted in the documentation for a present fault.

– Perform the conformity check (appearance of possible incorrect operations not yet declared by the system's self diagnosis procedure) and apply the associated fault finding strategy according to results.

– Confirm the repair (disappearance of the problem reported by the customer).

– Use the Customer complaints fault finding procedures if the fault persists.

This document contains generic fault-finding procedures that apply to all 45 A and 60 A electric power assisted steering computers fitted to the Clio II.

Type of computer: 45 A and 60 A electric power assisted steering. Program No.: 52 for the 45 A.

21 for the 60 A. Version No.: 83 for the 45 A. 54 for the 60 A. VDIAG No.: 04

To undertake fault finding on this system, it is essential to have the following items available: – the Fault Finding Technical Note for the vehicle,

– the electrical circuit diagram of the function for the vehicle concerned, – the tools listed under Special tooling required.

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FAULT FINDING - INTRODUCTION Tooling required:

– CLIP and NXR diagnostic tools only. – Multimeter.

Connect the wire to the diagnostic socket and switch on the ignition.

Clip or NXR:

– Switch on the diagnostic tool, – Select the vehicle type,

– Select the field: Power assisted steering,

– Follow the fault finding procedure described previously.

Note on the indicator lighting strategy for electric power assisted steering:

– When starting up, the indicator light is on for 3 seconds continuously after the appearance of top dead centre. – The indicator light remains permanently lit when certain failures are detected.

– The indicator light flashes during fault finding.

IMPORTANT:

The Repair method must be followed when replacing any component on the electric power assisted steering system.

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FAULT FINDING - FAULT INTERPRETATION DF002 PRESENT or STORED

COMPUTER

1.DEF : Supply relay permanently closed 2.DEF : Internal electronic fault

NOTES Processing priority in the event of stacked faults:

This fault must be dealt with last.

1.DEF NOTES none

Replace the computer (refer to the Repair methods).

AFTER REPAIR

Deal with any other possible faults. Switch off the ignition for 5 seconds. Switch on the ignition again.

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FAULT FINDING - FAULT INTERPRETATION

DF007 PRESENT

or STORED

VEHICLE SPEED SENSOR SIGNAL ABSENT

1.DEF : Inconsistency with engine speed 2.DEF : Vehicle speed information fault

NOTES

First check that the speed information and the trip meter are working on the instrument panel.

If this is not the case, consult the ABS fault finding procedure followed by that for the instrument panel.

Proceed with any necessary repairs then, while driving, use the diagnostic tool to check that the vehicle speed on the electric power assisted steering computer is not zero (PR003).

If it is, deal with this fault by following the procedure described below.

Check the continuity and insulation between the connection:

Computer track 9 ABS computer

Repair if necessary.

Carry out a road test, use the diagnostic tool to check that the vehicle speed on the electric power assisted steering computer is not zero.

The problem is solved if the speed is not zero; however, check the ABS fault finding. Otherwise, replace the computer (refer to the Repair methods).

Note: Certain irregular and exceptional driving conditions may cause this fault to appear, for example: high engine speed on stopping (see: CHART 3 page 25).

Check the absence of the speed information through parameter PR003. Check the continuity and insulation between the connection:

Computer track 9 ABS computer

Carry out a road test, use the diagnostic tool to check that the vehicle speed on the electric power assisted steering computer is not zero.

If this speed is correct, the (connection) problem is solved; however, check the ABS fault finding. Otherwise, replace the computer (refer to the Repair methods).

AFTER REPAIR

Clear the fault memory.

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or STORED

ENGINE SPEED ABSENT

1.DEF : Engine speed signal inconsistent

NOTES

Apply this fault finding strategy whether the fault is present or stored.

Special note:

If the engine speed information does not work on the instrument panel tachometer, carry out the fault finding procedure on the injection computer.

Start the engine and check the speed information using the electric power assisted steering fault finding procedure (PR004).

If the speed information is correct, the problem has disappeared (the fault may be stored but not present). This problem may have been caused by a faulty contact (check the appearance of the 20-track connector), or by failure of the injection computer (carry out the injection fault finding procedure). Consider the problem resolved. If the information is incorrect, proceed to the next box.

Check the insulation and continuity between the connection:

Computer track 19 Injection computer

Start the engine and check the speed information using the electric power assisted steering fault finding procedure (PR004).

If the speed information is incorrect, carry out the injection fault finding procedure.

If no problem is detected on the injection fault finding procedure, replace the electric power assisted steering computer (refer to the Repair methods).

NOTE: Check the different functions that use this information. Repair if necessary.

AFTER REPAIR

Clear the fault memory.

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or STORED

VARIABLE POWER ASSISTED STEERING MOTOR

CC : Short circuit

CC.0 : Short circuit to earth 1.DEF : Motor in short circuit

2.DEF : Open circuit or Internal electronic fault

NOTES If 2.DEF appears present, deal with it before CC, CC.0 or 1.DEF (possibility of a poor

motor connection on the computer).

CC, CC.0 or 1.DEF NOTES none

Disconnect the electric motor from the computer.

Switch the ignition on without starting the engine and check the following points without engaging the

steering wheel:

– Check the insulation between the following connections:

Computer track 23 + Battery Computer track 24 + Battery Computer track 23 Vehicle earth Computer track 23 Vehicle earth Computer track 23 Track 24 Computer

If one of the tests is negative, replace the computer (refer to the Repair methods). – Check the insulation between the following connections:

Check the insulation between the following tracks, while gently turning the steering wheel:

Engine wiring harness track 23 + Battery Engine wiring harness track 23 Vehicle earth

If one of the tests is negative, replace the steering column (refer to the Repair methods).

AFTER REPAIR

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DF035

CONTINUED

2.DEF NOTES

If 2.DEF appears present, deal with it before CC, CC.0 or 1.DEF (possibility of a poor motor connection on the computer).

Check the condition and that the connection is correct on the power assisted steering motor connector. Repair if necessary.

Switch off the ignition and wait 5 minutes. Switch off the engine (all connectors reconnected).

Measure the voltage on terminals 23 and 24 without disconnecting the connector (pass the touch points along the wires through the rear of the connector).

Turn the steering wheel approximately half a turn in one direction and then the other. Check that the voltage read on terminals 23 and 24 reverses when the direction of rotation of the steering wheel is changed. If no voltage can be read, check the engine connection and start the check once more.

Switch off the ignition for 5 seconds. Switch on the ignition again.

Clear the fault memory. Carry out a road test.

If the fault is still present, replace the steering column (refer to the Repair methods).

AFTER REPAIR

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BATTERY VOLTAGE

1.DEF : Faulty supply relay contact

NOTES

Special note:

Apply the fault finding technique below differently depending on whether the fault is indicated as present or stored. The vehicle engine must be started for the fault to be present.

Begin the test by starting the engine, wait 3 seconds, then check whether the fault is present or stored.

1.DEF NOTES Fault present

Check the battery voltage. If it is not in the following range: 9.5 volts < correct voltage < 16 volts

Carry out the operations necessary for bringing it within this range, or proceed to the next box. – Check the battery charge.

– Check the charging circuit.

– Check the tightness and the condition of the battery terminals.

Check again for the presence of the fault. If the fault is no longer present but is stored, the repair has been made.

If the battery voltage is not in the following range: 9.5 volts < correct voltage < 16 volts

And the fault is still present, replace the computer (faulty supply relay contact).

1.DEF NOTES Fault stored

The stored fault indicates that the battery voltage has fallen in the past. – Check the charging circuit.

– Check the tightness and the condition of the battery terminals.

Check this fault on other computers, if necessary, and erase them from the diagnostic tool.

AFTER REPAIR

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ANGLE SENSOR

CO : Open circuit or sensor out of service

1.DEF : Sensor supply problem

NOTES

If the two faults CO and CC.0 appear, deal with the CC.0 fault first, then carry out the test mentioned in the after repair box (parameter PR121). If this test is correct, then consider the CC.0 fault as solved. If it is not correct, deal with it.

CO NOTES none

Check the insulation and continuity between the connections:

Computer track 4 Track 4 Steering wheel angle sensor Computer track 2 Track 1 Steering wheel angle sensor Computer track 13 Track 3 Steering wheel angle sensor Computer track 3 Track 2 Steering wheel angle sensor

Repair the wiring and connectors if necessary. (See the angle sensor connector localization diagrams page...). Start the vehicle and check if parameter PR121 varies when turning the steering wheel from left to right. If parameter PR121 varies when the steering wheel is turned, the problem is solved.

With the engine started and the angle sensor connected, check the voltages between tracks 2 and 1, and 3 and 1 of the angle sensor. If these voltages move alternately between from 0V to 5V when the steering wheel is turned, replace the electric power assisted steering computer (refer to the Repair methods).

AFTER REPAIR

After repair, start the vehicle and check that parameter PR121 varies when turning the steering wheel.

Deal with any other possible faults. Switch off the ignition for 5 seconds. Clear the fault memory.

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DF038

CONTINUED

NOTES

If the two faults CO and CC.0 appear, deal with the CC.0 fault first, then carry out the test mentioned in the after repair box (parameter PR121). If this test is correct, then consider the CC.0 fault as solved. If it is not correct, deal with it.

Check the insulation and continuity between the connections:

Computer track 4 Track 4 Steering wheel angle sensor Computer track 2 Track 1 Steering wheel angle sensor Computer track 13 Track 3 Steering wheel angle sensor Computer track 3 Track 2 Steering wheel angle sensor

Repair the wiring and connectors if necessary.

Reconnect the 20-track connector on the computer (do not reconnect the angle sensor side wiring harness).

Switch the ignition on without starting the engine, then check for the presence of the 5V± 0.8V voltage between

track 4 of the angle sensor wiring harness and the vehicle earth.

If this voltage does not appear, switch off the ignition and check the 20-track connector again. If no fault is found, replace the computer (refer to the Repair methods).

Reconnect the 20-track connector. With the ignition and the engine switched off, (do not reconnect the angle sensor side wiring harness) check that the resistance between track 1 of the angle sensor side wiring harness and the vehicle earth is equal to zero (check 1).

If the resistance is not equal to zero, disconnect the 20-track connector and check that the resistance between track 2 of the computer and the vehicle earth is equal to zero (check 2).

If both the checks are positive, go to the next stage.

If check 1 is negative and check 2 positive, the problem is in the wiring harness or its connection. If both check 2s are negative, replace the computer (refer to the Repair methods).

Check the resistance between track 4 steering wheel angle sensor and the vehicle earth.

If the resistance is <1Ω the angle sensor is in short circuit to earth and the computer should be replaced (refer to the Repair methods).

AFTER REPAIR

After repair, start the vehicle and check that parameter PR121 varies when turning the steering wheel.

Deal with any other possible faults. Switch off the ignition for 5 seconds. Clear the fault memory.

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or STORED

TORQUE SENSOR CIRCUIT

1.DEF : Sensor internal electrical fault

NOTES If faults DF048, DF049 and DF050 are present or stored, deal with them first.

Deal with DF040 differently depending on whether the fault is present or stored.

After faults DF048, DF049 and DF050 have been dealt with, switch the engine off for 5 seconds, restart the engine and turn the steering wheel by a half turn.

Refer to the fault finding strategy to check if fault DF040 is present or stored. If the fault is present, replace the steering column (refer to the Repair methods).

If the fault is stored, check the condition and appearance of the 20-track connectors and torque sensor and repair, if necessary.

Consider the problem solved.

AFTER REPAIR

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or STORED

TORQUE SENSOR CIRCUIT

CC : Short circuit to torque sensor supply

NOTES None

Check the insulation and continuity on the connections between:

Computer track 8 Track 1 Torque sensor Computer track 6 Track 3 Torque sensor

Reconnect the torque sensor side connector (leave the 20-track connector disconnected). Check the insulation between the connections:

20-track connector, track 8 20-track connector, track 6 20-track connector, track 8 Vehicle earth

20-track connector, track 6 Vehicle earth

If the resistance is <1 Ω, replace the steering column (refer to the Repair methods).

Disconnect the 20-track connector and check the insulation between the connection:

Computer track 8 Track 6 Computer

If the resistance is <1 Ω, replace the computer (refer to the Repair methods).

Reconnect the 20-track connector, disconnect the torque sensor and switch the ignition on. Check for 8 volts between:

Torque sensor wiring harness track 1 Torque sensor wiring harness track 6

If this voltage is not present, replace the computer (refer to the Repair methods).

AFTER REPAIR

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FAULT FINDING - FAULT INTERPRETATION DF050 or DF049 PRESENT or STORED

SIGNAL 1 TORQUE SENSOR CIRCUIT (DF049)

SIGNAL 2 TORQUE SENSOR CIRCUIT (DF050)

CO.0 : Open circuit or short circuit to earth

NOTES

Processing priority in the event of stacked faults:

If faults DF049 and DF050 are present at the same time check track 1 of the torque sensor as a priority.

Check the insulation and continuity on the connections between:

Computer track 8 Track 1 Torque sensor Computer track 7 Track 4 Torque sensor Computer track 17 Track 2 Torque sensor Computer track 6 Track 3 Torque sensor

Reconnect the 20-track connector on the computer (do not reconnect the torque sensor side wiring harness). Switch the ignition on, then check for the presence of the 8V + or - 0.5V voltage between track 1 of the torque sensor wiring harness and the vehicle earth.

If this voltage does not appear, switch off the ignition and check the 20-track connector again. If no fault is found, replace the computer (refer to the Repair methods).

With the ignition and engine switched off, the 20-track connector connected, check the resistance between

track 3 of the torque sensor side wiring harness and the vehicle earth. If the resistance is not < 1Ω, check the

20-track connector once more. If no fault is found, replace the computer (refer to the Repair methods). With the ignition and engine switched off, the torque sensor disconnected, check the continuity and insulation between tracks 1, 2, 3 and 4 of the torque sensor and the vehicle earth.

If the resistance is <1 Ω, replace the steering column (refer to the Repair methods).

AFTER REPAIR

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DF049 and DF50

CONTINUED

NOTES

Processing priority in the event of stacked faults:

If faults DF049 and DF050 are present at the same time check track 1 of the torque sensor as a priority.

With the ignition and engine switched off, the 20-track connector connected, measure the resistance between tracks 2 and 3 of the torque sensor side wiring harness.

If this resistance does not equal approximately 500±50, disconnect the 20-track connector and check it.

Reconnect the 20-track connector and retake the measurement. If this resistance is still not approximately

500 ± 50Ω, replace the computer (refer to the Repair methods).

With the ignition and engine switched off, the 20-track connector connected, measure the resistance between tracks 4 and 3 of the torque sensor side wiring harness.

If this resistance does not equal approximately 500±50, disconnect the 20-track connector and check it.

Reconnect the 20-track connector and retake the measurement. If this resistance is still not approximately

500±50Ω, replace the computer (refer to the Repair methods).

AFTER REPAIR

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FAULT FINDING - STATUS INTERPRETATION

ET021

ENGINE HEAT SHIELD INDICATOR

The physical shield limits the braking assistance to heat-protect the system.

When the electric power assisted steering is overburdened, the specified current is reduced to ensure that certain components are heat-shielded.

The level of assistance is reduced as a result.

The physical shield can be deactivated by not using the steering for up to one hour.

NOTE:

When activated, the physical shield prevents the clearing of stored faults

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FAULT FINDING - PARAMETER INTERPRETATION

PR003

VEHICLE SPEED

NOTES The engine speed must be present when reading this parameter.

No faults should be present or stored.

If the speed is not equal to the true vehicle speed, refer to the fault finding procedure for fault DF007.

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FAULT FINDING - PARAMETER INTERPRETATION

PR108

COMPUTER SUPPLY VOLTAGE

NOTES

For dialogue to be possible, the voltage must be included in the following: 5 volts < computer voltage < 16 volts

No faults should be present or stored. No electrical consumers.

Ignition on

If voltage < minimum, the battery is discharged:

Check the charging circuit to determine the cause of this fault.

If voltage > maximum, the battery may be overcharged:

Check that the charging voltage is correct with and without electrical consumers.

At idle speed

If voltage < 10 volts, the charging voltage is too low:

Check the charging circuit to determine the cause of the fault.

If voltage > 16 volts, the charging voltage is too high:

The alternator regulator is faulty. Rectify this fault.

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FAULT FINDING - HELP

Key:

A : Computer 20-track connector.

B : Computer supply 2-track connector.

C : 2-track connector for the variable power assisted steering motor control.

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Electric power assisted steering computer:

1 Not connected 11 Electric power assisted steering

indicator light

2 Earth angle sensor 12

3 Signal 1 angle sensor 13 Signal 2 angle sensor

4 + 12 volts angle sensor 14 Not connected

5 Check terminal 15 Line K

6 Earth torque sensor 16

7 Signal torque sensor 17 Screening torque sensor

8 Supply torque sensor 18 Not connected

9 Vehicle speed signal 19 Engine speed

10 + After ignition 20

Electric power assisted steering computer supply:

21 +B Battery +

22 GND Earth

-Electric power assisted steering computer power:

23 +M + Motor

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1) Passenger compartment fuse plate:

2) Engine fuse plate:

DIFFERENT FUSES CONCERNED WITH ELECTRIC POWER ASSISTED STEERING

No. Symbol Rating (amps) Description

F2 15 A Brake lights - Diagnostic socket - Instrument panel -

Cruise control - Gear shifting control

F39 15 A Electric power assisted steering

No. Symbol Rating (amps) Description

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Assistance is maximum for speeds < 5 mph (8 Km/h).

Assistance is minimum for speeds > 40 - 50 mph (70 - 80 Km/h).

(*) The angle value is relative while the zero calculation has not been made.

It becomes absolute and thus centred in relation to the right-hand wheel position, when the zero calculation has been made.

Refer to the Technical Note which deals with your vehicle to obtain the exact values

Description Measurement range Operating range Tool name

Supply voltage 0 to 30 volts 10 to 16 volts PR108

Torque sensor +/- 8.256 Nm +/- 8.256 Nm PR117

Engine specified current 0 to 57.38 A or 0 to 76.5 A 0 to 45 A or 0 to 60 A PR120

Engine current measured 0 to 57.38 A 0 to 45 A or 0 to 60 A PR118

Vehicle speed 0 to 150 mph (255 Km/h) 0 to 150 mph (255 Km/h) PR003

Engine speed 0 to 5100 rpm 0 to 5100 rpm PR004

Steering wheel angle - 384° to + 381°(*) PR121

Maximum assistance V < 5 mph (8 Km/h)

Minimum assistance V > 40 - 50 mph (70 - 80 Km/h)

Heat shield status 0 : not active

1 : active -assistance limitation ET021

Zero calculation 0 : zero position not detected

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CF085: STEERING WHEEL ANGLE SENSOR PROGRAMMING PROCEDURE

Important::

The 45 A computer cannot be configured.

The 60 A computer has four different adjustments. It is therefore necessary to select the appropriate braking assistance law when fitting the computer. (See the help chart on page 23).

The computer is delivered with the default calibration law << 0 >>. It is impossible to calibrate the computer if the vehicle is not stationary.

Different braking assistance levels:

– Level 0: Minimum assistance – Level 1: Intermediate assistance

– Level 2: Assistance specific to a driving school vehicle – Level 3: Maximum assistance

Important: an inappropriate calibration level can lead to poorer performance. Note:

To check that your calibration has been correctly carried out, refer to the identification screen:

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Criteria for allocating assistance laws

General criteria:

For a 185/55 R15 wheel rim in D4F or D7F

fit the 60A electric power assisted steering law Level: 1

For a driving school vehicle fit the 60A electric power assisted steering law Level: 2

45 A computer: 8 200 061 924 x Default calibration 60 A computers: 8 200 092 424 8 200 149 673 Law 3Level 3 Law 2 Level 2 Law 1 Level 1 Law 0 Level 0 VEHICLE TYPE: BBXX 5-door Saloon CBXX 3-door Saloon LBXX 4-door Saloon SBXX Utility

No change in the law of fitting = Engine Suffixes E1 BBXX E1 CBXX E1 SBXX E2 BBXX E2 CBXX E3 BXX E3 CBXX D4F 712 x x x x 1 1 D7F 746 x x x x x 1 1 D7F 764 x x x x x 1 1 D7F 726 x x x x 1 1 D7F 746 x x x x x 1 1 F9Q 782 0 0 K4J 710 0 0 0 0 K4J 711 ₀ ₀ ₀ ₀ K4M 744 3 3 K4M 745 3 3 K4M 746 3 K9K 704 0 0 0 0 0 K9K 702 0 0 0 0 0 K9K 710 0

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Criteria for allocating assistance laws

General criteria:

For a 185/55 R15 wheel rim in D4F or D7F fit the 60A electric power assisted steering law Level: 1 For a driving school vehicle fit the 60A electric power assisted steering law Level: 2

45 A computer: 8 200 061 924 x Default calibration 60 A computers: 8 200 092 424 8 200 149 673 Law 3Level 3 Law 2 Level 2 Law 1 Level 1 Law 0 Level 0 VEHICLE TYPE: BBXX 5-door Saloon CBXX 3-door Saloon LBXX 4-door Saloon SBXX Utility

No change in the law of fitting = Engine Suffixes E5 BBXX E5 CBXX ES BBXX ES CBXX for driving school vehicle for alloy wheel rim D4F 712 1 1 2 1 D7F 746 2 D7F 764 2 D7F 726 D7F 746 2 F9Q 782 = K4J 710 0 0 3 3 = K4J 711 ₀ ₀ ₌ K4M 744 3 3 3 3 = K4M 745 3 3 = K4M 746 = K9K 704 3 3 2 = K9K 702 0 0 3 3 2 = K9K 710 =

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Key:

1 - Steering wheel angle sensor

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FAULT FINDING - CUSTOMER COMPLAINTS

NOTES Customer Complaints should only be investigated after a complete check has been run

using the diagnostic tool.

NO DIALOGUE WITH THE COMPUTER CHART 1

LOSS OF VEHICLE BRAKING ASSISTANCE WITHOUT

WARNING CHART 2

UNTIMELY LIGHTING UP OF THE INDICATOR LIGHT CHART 3

NO ASSISTANCE SYMMETRY OVER ASSISTANCE OR

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FAULT FINDING - FAULT FINDING CHARTS

CHART 1

NO DIALOGUE WITH THE COMPUTER

NOTES None.

Check the vehicle's battery voltage.

Try the diagnostic tool on another computer on the same vehicle or a different one. Check:

– The connection between the diagnostic tool and the diagnostic socket (lead in good condition). – The fuses for electric power assisted steering, engine and passenger compartment.

Check for + 12 volts on track 16 and for earth on track 5 and track 4 of the diagnostic socket. Repair if necessary.

Check the insulation, continuity and absence of interference resistance on the connections between:

Computer track 22 Earth

Computer track 15 Diagnostic socket track 7

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CHART 2

LOSS OF VEHICLE BRAKING ASSISTANCE WITHOUT WARNING

NOTES This customer complaint should only be investigated after a complete check has been

run using the diagnostic tool.

The vehicle is no longer assisted if the electric power assisted steering fuse is damaged or supply is lost. The steering is then the same as for manual steering, manoeuvrable when driving even at low speed, but very difficult to manoeuvre when stopped.

With no supply, the electric power assisted steering computer is no longer capable of lighting the warning light and so the driver is not made aware of the fault.

The driver will only become aware through noticing the loss of assistance to the steering wheel. Check fuse F39 on the passenger compartment fuse board and fuse F14 on the engine fuse board. Change the fuses if necessary.

Check the computer supply voltage:

Computer track 10 Vehicle earth Computer track 21 Vehicle earth

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CHART 3

UNTIMELY LIGHTING UP OF THE INDICATOR LIGHT

NOTES This customer complaint should only be investigated after a complete check has been

run using the diagnostic tool.

The electric power assisted steering defect mode is not compatible with the petrol engine management defect mode when a fault arises in the motorised throttle control.

When there is a fault in the engine, one of the defect modes in the engine management computer is to place the throttle in a fixed position, such that the engine speed will be above 2500 rpm so that the vehicle can be driven home or to a garage.

If the driver stops at the side of the road, with such a fault, with the engine still running the electric power assisted steering defect mode is triggered after 20 seconds:

Vehicle speed = 0 and engine speed > 2500 rpm, the electric power assisted steering computer activates a defect mode which leads to the lighting of the warning light for the electric power assisted steering and the significant hardening of the steering.

If the driver sets off while the vehicle speed is more than 3 mph (5 Km/h), the vehicle will be assisted again and the warning light for the electric power assisted steering will go out.

Refer to the fault finding strategy for Fault DF007, if it is present. If it is stored, proceed with erasing this fault.

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CHART 4

NO ASSISTANCE SYMMETRY

OVER ASSISTANCE OR UNDER ASSISTANCE

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

Look at the calibration for the electric power assisted steering computer in the identification screen before any operation.

For a similar steering wheel angle (positive or negative) in relation to the steering centre point, the driver will notice a different power assisted steering (in general, on assistance or increased effort).

In this case check Parameter PR117 (electric power assisted steering engine torque), with the vehicle stopped and no action on the steering wheel.

This parameter must be within the following range: from 0 to ± 0.3 Nm.

If this is not the case, replace the steering column (refer to the Repair methods).

If parameter PR117 is within the tolerance and there is no fault present or stored, proceed with a check of the front axle geometry and perform a road test (refer to the Repair methods).

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FAULT FINDING - INTRODUCTION

CONDITIONS FOR APPLICATION OF THE TESTS DEFINED IN THIS FAULT FINDING

The tests defined in this fault finding information must not be carried out on vehicles unless the description of the fault being dealt with corresponds exactly to the display on the diagnostic tool.

If a fault is dealt with following flashing of a bargraph, the conditions for confirming the actual presence of the fault (and the necessity of carrying out the fault finding procedure) are given in the Notes box or at the beginning of the interpretation of the bargraph.

If a bargraph is only interpreted if it is permanently lit up, carrying out the checks recommended in the fault finding information when the bargraph is flashing will not enable the origin of the storing of the fault to be located. In this case, only a check of the wiring and the connectors of the faulty component must be carried out (the fault is simply stored as it is not present at the time when the check is carried out).

NOTE: Switch off the ignition before using the diagnostic tool.

The new BOSCH 5.3 ABS computers fitted on the CLIO II are supported by the tachometer function.

The computer is capable of supplying the vehicle speed signal to all users of this information in the vehicle (instrument panel, engine management, etc...).

This vehicle speed signal will replace the one presently supplied by the speed sensor located on the gearbox. The ABS computer calculates the vehicle speed from the speed of the wheels and the circumference of the tyres fitted on the vehicle.

TOOLS REQUIRED FOR WORK ON THE ABS SYSTEM

– XR25 (except tachometer function). – At least XR25 cassette no. 17.

– NXR or CLIP stand following the May 99 update.

(no access to the features of this computer with the XR25 and cassette no. 18). – Multimeter.

REMINDER:

When there is intermittent fault storage, the ABS warning light will light up the next time the vehicle is used until the car reaches 7 mph (12 km/h). When the fault is stored, a counter linked to the fault is initialised with a value of 40. This value will decrease by 1 each time the ignition is switched on if the fault is not present when the vehicle speed exceeds 7 mph (12 km/h).

When the reading on the counter is equal to 1, it remains at 1 and the fault is not erased.

The instrument panel fitted on the modified tachometer version CLIO II is activated. It then performs the fault finding procedure on the connections for the ABS and brake warning lights.

In this way the instrument panel lights up the warning lights when the ABS computer is not connected.

The shunt in the ABS computer connector, which provided the earthing for the warning light lines while the computer was disconnected, disappears.

In the absence of an entered tyre circumference, a fault is registered in the computer memory and the ABS warning

light flashes. The ABS and EBD (Electronic Braking Distribution) functions are ensured but the vehicle speed is calculated with the maximum circumference.

When the dialogue is established between the diagnostic tool and the ABS computer, the ABS and EBD (Electronic Braking Distribution) functions are interrupted, which gives rise to a risk of loss of control of the vehicle under emergency braking. For this reason, the dialogue is cut as soon as the vehicle speed exceeds 6 mph (10 km/h) to reestablish ABS and EBD functioning.

(34)

FAULT FINDING - XR25 FICHE MODEL OF FICHE TO BE USED

(35)

FAULT FINDING - Interpretation of XR25 bargraphs BARGRAPH SYMBOLS

– Of faults (always on coloured background):

– Of status (always on white background):

– Supplementary information:

Some bargraphs have a "The command"..., when the bargraph is lit up, enables additional information regarding the type of fault or the status to be displayed.

If lit, indicates a fault on the product tested. The associated text defines the fault. This bargraph may be:

– Permanently lit : fault present

– Flashing : fault stored

– Light gone out : fault absent or not found

Bargraph always located on the top right-hand side.

If lit, indicates establishment of dialogue with the product computer. If it remains off:

– The code does not exist.

– There is a fault in the tool, the computer or the XR25 /computer connection. The following bargraph representations indicate their initial status:

Initial status: (ignition on, engine stopped, without operator action).

or Indefinite is lit up when the function or the condition described on the fiche is carried out.

Off

On goes out when the function or the condition described on the fiche is no longer

(36)

FAULT FINDING - Interpretation of XR25 bargraphs

1 Right-hand bargraph 1 off

Code present

Fiche no. 53

NOTES None.

Ensure that the diagnostic tool is not causing the fault by trying to communicate with a computer on another car. If the diagnostic tool is not the cause of the fault and dialogue cannot be established with any other computer on the same vehicle, it may be that a faulty computer is disrupting fault finding lines K and L. Disconnect the computers one at a time to locate the fault.

Check the voltage of the battery and carry out the operations necessary to obtain a voltage which is to specification (9.5 volts < U battery < 17.5 volts).

Check the presence and the condition of the ABS fuse on the passenger compartment fuse board (10A). Check that the computer connector is properly connected and check the condition of its wiring.

Check the connection and condition of the connection at the intermediate junctions R107 dashboard/front of engine and R255 front of engine / ABS.

Check the ABS earth wires (tighten the two earth screws above the ABS assembly) Check that the computer is correctly supplied:

– earth on track 19 of the 31-track connector,

– + after ignition feed on track 15 of the 31-track connector.

Ensure that the fault finding socket is correctly supplied: – + after ignition feed on track 16,

– earth on track 5.

Check the continuity and the insulation of the lines connecting the diagnostic socket / ABS computer: – between track 12 of the computer connector and track 15 of the diagnostic socket,

– between track 11 of the computer connector and track 7 of the diagnostic socket.

If dialogue is still not established following these various checks, replace the ABS computer.

(37)

1 Left-hand bargraph 1 lit up

Supply/Computer

Fiche no. 53

NOTES None.

Check the condition and position of the 60A ABS fuse in the engine connection unit.

Ensure continuity between the fuse and tracks 17 and 18 of the computer connector (presence of + before

ignition on both tracks). Check the tightness and the condition of the battery terminals. Check the connections on the 31-track connector of the ABS computer.

Check the ABS earths (above the hydraulic assembly) and visually check all the ABS wiring.

Erase the computer memory, exit the fault finding (G13*) and switch off the ignition.

Carry out a new check using the diagnostic tool. If the power supply/computer fault persists, replace the ABS computer.

(38)

2 - 3 - 4 - 5 Right or left-hand bargraphs 2, 3, 4 or 5 flashing

Solenoid valves circuit

Fiche no. 53

NOTES

Even if present at time of testing, these faults will always be declared by a flashing bargraph.

To confirm the presence of these faults and thus the necessity of applying the fault finding procedure below, start control G20*. The fault is present if the bargraph lights up again at the end of the command.

If bargraph 11 left-hand side is also lit up, deal with left-hand side bargraph 11 as a priority.

Check the ABS earth wires (tighten the two bolts above the ABS assembly).

Check the condition and position of the 60A ABS fuse in the engine compartment connection unit. Check the connection and condition of the connections on the 31-track connector of the computer.

Erase the computer memory, exit the fault finding (G13*) and switch off the ignition. Switch on the ignition and perform a new test with the diagnostic tool using control G20. If the solenoid valve circuit fault reappears, replace the ABS computer.

AFTER REPAIR Erase the computer memory (G0**).

(39)

Left front wheel sensor circuit

Fiche no. 53

NOTES None.

Check the connection and the condition of the sensor connections.

If the connector is correct, check the resistance of the sensor at its connector.

Replace the sensor if its resistance is not approximately 1.6 Kohms (1.6 Kohms ± 320 ohms).

If the resistance is correct, check and ensure the continuity of the connections between the sensor connector and the computer connector:

– between one track of the sensor connector and track 7 of the computer connector, – between the other track of the sensor connector and track 6 of the computer connector. Also check the insulation between these connections.

Carry out a visual inspection of the sensor wiring and check the quality of the connection on the 31-track

computer connector.

If the results of the checks are correct, reconnect the computer and the wheel speed sensor and then clear the computer memory.

Exit fault finding mode (G13*) and switch off the ignition. Switch the ignition on and replace the sensor if the fault recurs. If the fault recurs after changing the sensor, change the computer.

(40)

6 Right-hand bargraph 6 lit up

Right front wheel sensor circuit

Fiche no. 53

NOTES None.

If the resistance is correct, check and ensure the continuity of the connection between the sensor connector and the computer connector:

– between one track of the sensor connector and track 3 of the computer connector, – between the other track of the sensor connector and track 5 of the computer connector. Also check the insulation between these connections.

(41)

Left rear wheel sensor circuit

Fiche no. 53

NOTES None.

Check the connections at the intermediate connection under the body (R101).

If the connector and the junction are correct, check the sensor resistance on the connector.

– between one track of the sensor connector and track 8 of the computer connector (via track B of the connector under the body R101),

– between one track of the sensor connector and track 9 of the computer connector (via track A of the connector under the body R101),

Also check the insulation between these connections.

AFTER REPAIR Erase the computer memory (G0**)

(42)

7 Right-hand bargraph 7 lit up

Right rear wheel sensor circuit

Fiche no. 53

NOTES None.

Check the connections at the intermediate connection under the body (R101).

If the connector and the junction are correct, check the sensor resistance on the connector.

– between one track of the sensor connector and track 1 of the computer connector (via track D of the connector under the body R101),

– between the other track of the sensor connector and track 2 of the computer connector (via track C of the connector under the body R101).

Also check the insulation between these connections.

(43)

8 Left or right-hand bargraph 8 flashing

Right or left front wheel sensor signal

Fiche no. 53

NOTES

Even if they are present when the check is carried out, these faults will always be indicated by a left or right BG8 flashing.

To confirm the presence of these faults and thus the necessity of applying the fault finding procedure below, carry out a road test. The fault is present if the bargraph is permanently lit during the test.

If bargraphs 6 and 8 left-hand side are both lit up, deal with bargraph 6 first. If bargraphs 6 and 8 right-hand side are both lit up, deal with bargraph 6 first.

Check the condition of the wheel speed sensor mounting (position and torque tightening). Check the sensor/target air gap over one wheel revolution: 0.1 < air gap < 1.9.

Check conformity of the target (condition, number of teeth=26)

Check the connection and the condition of the sensor connectors.

Replace the sensor if its resistance is not approximately 1.6 Kohms(1.6 Kohms ± 320 ohms).

Exit fault finding mode (G13*) and switch off the ignition. Change the sensor if the fault recurs.

If the fault recurs after changing the sensor, it may be caused by a solenoid valve operating fault. It is therefore necessary to carry out the hydraulic check of the solenoid valves using the diagnostic tool with command G03* or G04* (refer to the Help section). If the 10 unlocking/locking cycle does not occur on one of the wheels, replace the hydraulic unit.

If the hydraulic unit is not faulty, change the computer.

(44)

9 Left or right bargraph 9 flashing

Right or left rear wheel sensor signal

Fiche no. 53

NOTES

Even if they are present when the check is carried out, these faults will always be indicated by a flashing left or right-hand BG9 bargraph.

To confirm the presence of these faults and thus the necessity of applying the fault finding procedure below, carry out a road test. The fault is present if the bargraph is permanently lit during the test.

If bargraphs 7 and 9 left-hand side are both lit up, deal with bargraph 7 first. If bargraphs 7 and 9 right-hand side are both lit up, deal with bargraph 7 first.

Check the condition of the wheel speed sensor mounting (position and torque tightening). Check the connection and the condition of the sensor connectors.

Check the connections at the intermediate connector under the body R101. If the connector is correct, check the resistance of the sensor at its connector.

If the results of the checks are correct, reconnect the computer and the wheel speed sensor and then clear the computer memory. Exit fault finding mode (G13*) and carry out a road test.

If the fault reappears, check the conformity of the target: condition, number of teeth = 26.

If the results of the checks are correct, clear the computer memory, exit from the fault finding and perform a road test.

Change the sensor if the fault recurs.

If the fault recurs after changing the sensor, it may be caused by a solenoid valve operating fault. It is therefore necessary to carry out the hydraulic check of the solenoid valves using the diagnostic tool with command G05* or G06* (refer to the Help section). If the 10 unlocking/locking cycle does not occur on one of the wheels, replace the hydraulic unit.

If the hydraulic unit is not faulty, change the computer.

(45)

10

Right-hand bargraph 10 lit up or flashing

Pump motor circuit

XR25 Help: *30 1.dEF: Permanent command or CO engine earth

2.dEF: Motor not turning over

Fiche no. 53

NOTES

If bargraph 10 right-hand side is flashing, confirm the presence of the fault and therefore the need to apply the fault finding below, using command G20* with the diagnostic tool.

The fault is present if the bargraph lights up again at the end of the command.

1.dEF NOTES Replace the computer if the pump motor is operating

permanently.

Check the ABS earths (tightening of the two earth bolts above the hydraulic assembly). Check/ensure continuity between the ABS earth and track 16 of the computer connector. Check locking of the 2-track connector of the pump motor.

If all the checks are correct, reconnect the computer then erase its memory with command G0*. Exit fault finding mode (G13*) and carry out a road test.

Change the computer if the fault recurs.

2.dEF NOTES None.

Replace the hydraulic assembly (mechanical locking of the pump, etc...).

(46)

Solenoid valve supply fault

Fiche no. 53

NOTES None.

Carry out the operations necessary for obtaining correct voltage between tracks 19 and 17/18 of the 31-track

ABS computer connector (9.5 volts < correct voltage < 17.5 volts): – Check the tightness and the condition of the battery terminals. – Check the 60A fuse in the engine connection unit (white base).

– Ensure continuity between the 60A fuse and tracks 17 and 18 of the computer connector. – Check the ABS earths (tightening of the two earth bolts above the hydraulic assembly). – Check/ensure continuity between the ABS earth and track 19 of the computer connector.

If all the checks are correct, reconnect the computer then erase its memory with command G0**. Exit fault finding mode (G13*) and carry out a road test. Change the computer if the fault recurs.

(47)

12 Left-hand bargraph 12 lit up or flashing

Brake circuit

Fiche no. 53

NOTES None.

Press the brake pedal while observing right and left-hand bargraph 13.

Are the positions "pedal released" and "pedal depressed" registered?

YES

NO

Check the two brake light bulbs and the earth of the rear light units (no earthing of

track 14 across the bulbs when pedal is not depressed).

Apply the fault finding described in the interpretation of bargraph 13 right and

left-hand side for Bargraph 13 left-hand side off, brake pedal depressed.

(48)

12 Right-hand bargraph 12 flashing

Target on one of the wheels

Fiche no. 53

NOTES

Even if present at moment of testing, this fault will always be declared by a right-hand side BG12 flashing.

To confirm the presence of this fault and thus the necessity of applying the fault finding procedure below, carry out a road test. The fault is present if the bargraph is

permanently lit during the test.

Check the quality of wheel speed sensor mountings (position and torque tightening). Check the conformity of the targets: condition, number of teeth = 26.

(49)

13 Right and left-hand bargraph 13

Brake pedal

Lit up on the left-hand side if the pedal is depressed. Lit up on the right-hand side if the pedal is not depressed

Fiche no. 53

NOTES Only carry out the checks if the lighting of the bargraph is not consistent with the

position of the pedal.

Bargraph 13 left-hand side has gone out and the brake pedal is depressed

BG13 right-hand side remains permanently lit up.

If brake lights operate:

– Ensure continuity between dashboard/rear left junction R2 on track 3 and track 14 of the ABS computer connector.

Dashboard/front of engine intermediate junctions R107 (track G7) and front of engine/ABS R255 (track 8).

If the brake lights do not operate:

– Check the condition and adjustment of the brake light switch and the 15A fuse for the brake lights (in the passenger compartment fuse board). Change it if necessary.

– Disconnect the brake switch and then check/ensure the presence of +after ignition on track B1 of the connector.

– - Check the operation of the brake switch contact (contact closed between tracks A3 and B1).

– Check and ensure continuity between track A3 of the brake light switch connector and the dashboard/rear left hand side R2 on track 3.

Left-hand bargraph 13 lit up permanently

– Check the condition and the adjustment of the brake switch. Change it if necessary.

– Check the operation of the brake switch contact (contact closed between tracks A3 and B1). Replace the brake light switch if there is permanent continuity between the two tracks.

– Check and ensure insulation from 12 volts of the connection between track A3 of the brake light switch connector and track 14 of the ABS computer connector.

Intermediate connection: Dashboard/front of engine R107 on track G7.

Front of engine/ABS R255 on track 8.

(50)

FAULT FINDING - Interpretation of faults

14G PRESENT

Tachometer function index not programmed

NOTES None.

The Bosch 5.3 ABS computer with tachometer supplies the vehicle speed signal to all areas where this information is needed (instrument panel, engine management,etc...).

This vehicle speed signal will replace the one supplied by the speed sensor located on the gearbox.

The ABS computer calculates the vehicle speed from the speed of the wheels and the circumference of the tyres fitted on the vehicle.

The tyre circumference must be programmed into the memory of a new computer. This consists of entering an index X using the diagnostic tool with the WHEEL DIAMETER CONFIGURATION command.

Value of index X: 165/70/R13 175/70/R13 175/60/R14 165/65/R14 X = 108 175/65/R14 185/60/R14 185/55/R15 195/50/R15 X = 148 175/70/R14 X = 232

Once the index has been entered using the WHEEL DIAMETER CONFIGURATION command, clear the computer memory and then switch off the ignition.

Use the Tachometric index parameter to check that the index has been entered correctly.

AFTER REPAIR Clear the computer memory.

(51)

FAULT FINDING - CONFORMITY CHECK

NOTES Only check the conformity after a full check using the diagnostic tool.

Order Function Parameter/status checked or

action Display/notes Fault finding

1 Computer conformity with tachometric function PR012 COMPUTER NUMBER _None 2 Computer conformity without tachometric function #12 3 Computer configuration PR030 TACHOMETRIC INDEX

Ensure that the index entered corresponds to the tyres fitted to the vehicle (refer to the

Help section)

None

4

Operation of ABS and brake warning lights Computer initialisation

check

Switch on the ignition

The warning lights come on for

3 seconds when the ignition is switched on

None

5 Detection of brake

pedal positions ET013 BRAKE PEDAL

Ensure that the system recognises the DEPRESSED and RELEASED positions

MR337

(52)

FAULT FINDING - HELP USE OF COMMANDS

Control of the solenoid valves for checking the hydraulic system: G03* to G06*

Lift the vehicle in order to be able to turn the wheels and check that they turn freely. Keep the brake pedal depressed to prevent the wheel to be tested from being turned by hand (do not brake so firmly that full brake power is reached).

Enter G0X* Ten cycles of unlocking/locking must be noted for the wheel concerned.

Control of the pump motor: G08*

Tap G08* and press the brake pedal Motor operation for 2 seconds should be detected.

Pump motor and solenoid valve control: G20*

Tap G20* and press the brake pedal Brief motor and solenoid valve operation must be noted.

Bleeding of hydraulic circuits: G15*3* front left/G15*4* front right/G15*5* rear left/G15*6* rear right Apply the procedure described in the section on Bleeding the circuits in the Workshop Repair Manual.

SPECIAL NOTES

REPLACING THE COMPUTER WITH TACHOMETRIC FUNCTION

The Bosch 5.3 ABS computer with tachometer supplies the vehicle speed signal to all areas where this information is needed (instrument panel, engine management,etc...).

This vehicle speed signal will replace the one supplied by the speed sensor located on the gearbox.

The ABS computer calculates the vehicle speed from the speed of the wheels and the circumference of the tyres fitted on the vehicle.

The tyre circumference must be programmed into the memory of a new computer. This consists of entering an index X using the diagnostic tool with the WHEEL DIAMETER CONFIGURATION command.

Value of index X: 165/70/R13 175/70/R13 175/60/R14 165/65/R14 X = 108 175/65/R14 185/60/R14 185/55/R15 195/50/R15 X = 148 175/70/R14 X = 232

Once the index has been entered using the WHEEL DIAMETER CONFIGURATION command, clear the computer memory and then switch off the ignition.

(53)

WARNING LIGHT FAULTS

The ABS warning light does not light up for 3 seconds after the ignition is switched on

CHART 1

The ABS warning light is permanently lit with the ignition on (with no fault being indicated by the diagnostic tool)

CHART 2

The ABS warning light and/or brake warning light comes on again after

the engine is started CHART 3

The ABS warning light and/or brake warning light is lit temporarily when driving

CHART 3

The brake warning light does not light up for 3 seconds after ignition is switched on

CHART 4

Brake warning light permanently lit, ignition on CHART 5

The ABS and brake warning lights are lit up with the ignition on CHART 6

FAULTS WHICH OCCUR WHEN BRAKING WITH ABS REGULATION

Locking of one or more wheels CHART 7

Pulling CHART 8

Drift CHART 9

Unexpected ABS operation at low speed and with light pedal pressure CHART 10

Unexpected ABS operation on a poor road surface CHART 11

Unexpected ABS operation with use of special equipment (car phone,

CB, etc...) CHART 12

Lengthening of the brake pedal travel following ABS operation (with

pedal receding when entering ABS regulation) CHART 13

Spongy pedal CHART 14

Brake pedal vibration CHART 15

(54)

OTHER CASES

The ABS and brake warning lights do not light up, with the computer disconnected

CHART 17

Electronically Controlled Hydraulic System