2007 RENAULT SCENIC ABS

POWER-ASSISTED STEERING
Fault finding – Introduction
36B
36B-5V5 MR-372-J84-36B000$066_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
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.
Physical inspection
While manipulating the wiring 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 to the 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.

POWER-ASSISTED STEERING
Fault finding – System operation
36B
36B-7V5 MR-372-J84-36B000$132_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – System operation
GENERAL OPERATION
On this vehicle, the steering system is power-assisted by an electric motor attached to the steering column.
The action of the driver is relayed by a torque sensor, which measures the force applied to the steering wheel,
and a steering column angle sensor (steering wheel angle sensor only on Vdiag 05 and 09). Assistance is given
by an electric motor which applies more or less torque to the steering column, in one direction or the other.
A computer controls this assistance according to several vehicle environment parameters, including the vehicle
speed.
EPAS ALSO OFFERS THE FOLLOWING:
Active recall:
This function is used to bring the steering wheel back to the straight-ahead position when driving at low speeds but
not when the vehicle is stationary. This function is normal on hydraulic power-assisted steering vehicles or vehicles
without assistance.
This function cannot be deactivated by the diagnostic tool.
For Vdiag 05 and 09 (columns with steering wheel angle sensor): this feature is inactive when the steering wheel
angle is not available (ET020 Programming steering wheel angle sensor for STATUS 1, STATUS 2, STATUS 3).
For Vdiag 0D (columns without steering wheel angle sensor): this feature is always inactive.
Lock torque limit:
This function limits the assistance torque when the steering wheel is held at full lock with considerable effort, when
the vehicle is stationary or travelling at a speed less than 3 mph (5 km/h). The purpose of this function is to limit
overheating of the electric power assisted steering motor.
Note:
When the computer detects a fault, the level of assistance can be modified depending on how serious the fault is.
An incorrect or absent vehicle speed signal results in assistance equal to that provided at 60 mph (100 km/h)
without active recall. The EPAS sends a steering wheel angle signal to the ESP computer (if fitted).
MR-372-J84-36B000$132_fra.mif

POWER-ASSISTED STEERING
36B
36B-11V5 MR-372-J84-36B000$330_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Configurations and programming
Summary table of configurations and configuration readings
GENERAL INSTRUCTIONS:
After replacing the EPAS computer/steering column unit, configure the computer's assistance strategy and program
the steering wheel angle sensor (only for Vdiag 05 and 09).
The following procedure must be followed in order to carry out the above configuration and programming:
–connect the diagnostic tool,
–switch on the ignition and establish dialogue with the electric power-assisted steering computer,
–select the "Repair mode" menu,
–configure the computer's assistance strategy and program the steering wheel angle sensor (see below),
–exit fault finding mode: stop dialogue with the electric power assisted steering computer without switching off the
CLIP tool,
–switch off the ignition for at least 15 seconds, without disconnecting the battery, for the configuration to be taken
into account by the EPAS computer,
–switch on the ignition again and establish dialogue with the electric power assisted steering computer,
–make sure the configuration readings have been properly registered,
–check that the system is operating correctly (steering assistance available when the engine is running).
A. STEERING WHEEL ANGLE SENSOR PROGRAMMING (only for Vdiag 05 and 09)
PROCEDURE COMPLETE:
(following replacement of the computer/steering column assembly).
Status ET020 Steering wheel angle sensor programming is STATUS 1 (SERVICE indicator light is continuously
lit, see interpretation of status).
–with the ignition on, connect the diagnostic tool and establish dialogue with the electric power assisted steering
computer,
–with the engine stopped or running (to obtain maximum steering assistance), turn the steering wheel to full left lock
and then to full right lock,
–set the vehicle wheels straight ahead, with the steering at the centre point (driving in a straight line),
–run command VP004 Steering wheel angle sensor programming by pressing the CONFIRM button,
–turn the steering wheel to full left lock and then to full right lock,
–Status ET020 Steering wheel angle sensor programming must be STATUS 4 (normal operational status),
–check that parameter PR121 Steering wheel angle varies within the limits indicated in the Conformity check
section and that DF038 Angle sensor is not present. VP001 Enter VIN ID010 VIN code
VP004Steering wheel angle sensor programming
(only for Vdiag 05 and 09)ET020Steering wheel angle sensor programming
(only for Vdiag 05 and 09)
VP005 Enter the APV* operation date ID018 Read last APV* operation date
SC001 Computer calibration ET026 Computer calibration
Note:
To obtain a precise wheels straight ahead position (straight line driving), carry out this operation on a front axle
adjustment bench (especially for vehicles fitted with ESP).
IMPORTANT
If the vehicle is fitted with ESP, establish dialogue with the ABS/ESP computer after the operation; if the function
is available (depending on the computer version) clear the ESP sensor programming using command RZ003.
Make sure there are no ESP faults: carry out the necessary operations by referring to the Fault Finding Manual.
MR-372-J84-36B000$330_fra.mif

POWER-ASSISTED STEERING
36B
36B-13V5 MR-372-J84-36B000$396_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Fault summary table
Tool
faultDiagnostic tool titleAssociated
DTCCustomer complaints and warning light
coming on
DF001Motor thermal protection5614Steering assistance intermittent reduction.
DF002Computer5608Assistance limited to 30% (with SERVICE
warning light + message) or no assistance
(with STOP warning light + message)
depending on the internal fault code.
DF020Computer supply5601Degraded assistance (no warning light or
message) until a loss of assistance below
9 V or above 17 V with STOP indicator light
+ Message.
DF021Steering wheel angle sensor
programming (only for Vdiag 05 and 09)5612Degraded steering wheel recall (with
SERVICE indicator light + message). ESP
fault, if present.
DF023+ after ignition feed5613Assistance gradually cuts out (within
5 minutes). When the ignition is next
switched on there is no steering
assistance.
DF033Multiplex networkD000Inappropriate level of assistance:
SERVICE indicator light + Message.
DF035Variable power assisted steering motor5606Assistance limited to 30% (with SERVICE
warning light + message) or no steering
assistance (with STOP warning light
+ Message).
DF038Angle sensor (only Vdiag 05 and 09) 5605Steering wheel recall degraded
(no warning light or message). ESP fault,
if present.
DF053Computer configuration5602Defect mode assistance (no message
or warning light).
DF054Torque sensor5604Steering assistance loss or absence with
STOP indicator light + Message.
DF055Computer memory5607Degraded assistance (without warning
light or message) or assistance limited to
10% with SERVICE warning light
+ Message.
Risk of ESP fault.
DF057Vehicle speed multiplex signalD200Inappropriate level of assistance:
SERVICE indicator light + Message.
Note:
Warning light/message
SERVICE + "Check steering" or,
STOP + audible warning + "Faulty steering" or "EPAS fault", depending on the type of instrument panel.
MR-372-J84-36B000$396_fra.mif

POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-15V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF002
PRESENT
OR
STOREDCOMPUTER
DEF: Computer fault
NOTESPriority in the event of a number of faults:
In the event of an accumulation of faults, deal with the other present and stored faults
before applying the interpretation for this fault.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present after having started the engine and turned the steering
wheel from lock to lock.
Notes:
–This fault causes an absence of steering assistance or a loss of steering assistance
and also illuminates the STOP indicator light + Message or assistance is limited to
30% and the SERVICE indicator light + Message come on.
Disconnect the 2 black connectors from the EPAS computer.
Check the condition and conformity of the connectors and their clips.
Check the conformity of the electrical supplies (they must be equal to the battery voltage).
In the event of a fault, check the insulation, continuity and the absence of interference resistance on the
following connections:
8-track connector track 8 + 12 V after ignition
2-track connector track 1 + 12 V before ignition feed
2-track connector track 2 Earth
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF002/DAE_V09_DF002/DAE_V0D_DF002

POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-16V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF020
PRESENT
OR
STOREDCOMPUTER SUPPLY VOLTAGE
1.DEF: Voltage too low
2.DEF: Voltage too high
CO: Open circuit
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is considered present when the engine is running.
Notes:
This fault causes a degraded assistance (no warning light or message) until assistance
is lost (below 9 V or above 17 V) with STOP warning light + Message.
–The computer records an occurrence context (computer operating values frozen
when fault occurs). To view this information, click on the fault description (camera
symbol). Within these values, parameter PR143 Internal fault code gives the fault
finding procedure to apply.
Procedure to apply for internal fault code 135 of the PR143
Check the conditioning and positioning of the EPAS supply fuses:
–Power fuse (80A BP81) in the engine fuse box.
–AP44 after ignition fuse (5A) in the Protection and Switching Unit.
Check the condition and tightness of the battery and alternator terminals, as well as the Protection and Switching
Unit bolt.
Carry out fault finding on the charge circuit.
Repair if necessary.
Disconnect the two black connectors from the EPAS computer.
Check the condition and conformity of the connectors and their clips.
Check the conformity of the electrical supplies (they must be equal to the battery voltage).
In the event of a fault, check the insulation, continuity and the absence of interference resistance on the
following connections:
8-track connector track 8 + 12 V after ignition
2-track connector track 1 + 12 V before ignition feed
2-track connector track 2 Earth
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF020/DAE_V09_DF020/DAE_V0D_DF020

POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-18V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09
DF021
PRESENT
PROGRAMMING THE STEERING WHEEL ANGLE SENSOR
DEF: Programming not carried out or incorrect
NOTESNotes:
This fault is present for as long as the steering wheel angle is not calibrated.
It is automatically cleared as soon as the programming procedure is completed.
This fault causes an absence of steering wheel recall (with warning light
continuously on).
Place the vehicle on a front axle adjusting bench.
Position the vehicle wheels in the straight line driving position (steering centre point).
Program the steering wheel angle via command VP004 Steering wheel angle sensor programming
(see Configuration and programming, section A).
Vehicle in straight line driving position (steering centre point).
Refer to parameters PR121 Steering wheel angle and PR007 Steering wheel angle offset compensation.
Both parameters must be 0˚.
Turn the steering wheel to full right lock then to full left lock, and check that the parameter varies within the
tolerances given in the conformity check.
Refer to status ET020 Steering wheel angle sensor programming, which must be STATUS 4.
Start the engine and check the operation of the EPAS by turning the steering wheel from lock to lock
(parking manoeuvres).
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF021P/DAE_V09_DF021P

POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-19V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF023
PRESENT
OR
STORED+ AFTER IGNITION FEED
1.DEF: Abnormal voltage
NOTESNotes:
When this fault appears, the assistance gradually cut outs within 5 minutes.
Next time the ignition is switched on, this fault causes the absence of steering
assistance.
Check the power supply fuse for the EPAS:
–AP44 after ignition fuse (5A) in the Protection and Switching Unit.
Check the tightness and the condition of the battery terminals.
Repair if necessary.
Disconnect the 8-track connector of the EPAS computer.
Check the condition and conformity of the connector and its clips.
Check the conformity of the 12 V after ignition feed, with the ignition on and engine running (it must be equal
to the battery voltage).
In the event of a fault, check the insulation, continuity and the absence of interference resistance on the
following connection:
8-track connector track 8 + 12 V after ignition
Repair if necessary.
If the connections are OK but the EPAS computer electrical supply is not correct, run fault finding on the charge
circuit.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF023/DAE_V09_DF023/DAE_V0D_DF023