RENAULT SCENIC 2007 J84 / 2.G Power Assisted Steering Repair Manual

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-51V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag No.: 05, 09
ALP4The steering wheel does not return by itself to the centre at low
speed: steering wheel return to centre point inactive
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Check that the casing under the steering wheel does not rub on the steering column or steering wheel.
Check the pressure and condition of the tyres, the condition of the joints and the front axle geometry.
Check the vehicle battery voltage.
Check the charge circuit if necessary.
Refer to status ET020 Steering wheel angle sensor programming, which must be STATUS 4.
Position the vehicle wheels in the straight line driving position (steering centre point).
Refer to parameters PR121 Steering wheel angle which must be in the range - 10 d˚ < X < 10 d˚ and PR007
Steering wheel angle offset compensation which must be in the range - 10 d˚ < X < 10 d˚.
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".
If parameters PR121, PR007 and status ET020 listed above are not in conformity:
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 using command VP004 Steering wheel angle sensor programming (see
Configuration and programming).
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP4/DAE_V09_ALP4

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-52V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP5Under-assistance at low speed and over-assistance at high
speed without warning
NOTESNone.
Check the vehicle battery voltage.
Check the charge circuit if necessary.
Check that parameter PR003 Vehicle speed is correct (see Conformity check).
Test the multiplex network.
Repair if necessary.
If the fault is still present, contact Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP5/DAE_V09_ALP5/DAE_V0D_ALP5

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-53V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP6 Too little assistance
NOTESNote :
With the steering wheel on full lock, assistance is reduced after 0.5 seconds.
Check the pressure and condition of the tyres, the condition of the joints and the front axle geometry.
Check the vehicle battery voltage.
Check the charge circuit if necessary.
Do not operate the EPAS for at least 1 hour.
Check that parameters PR008 Computer temperature, PR009 Steering motor temperature and PR014
Assistance level available are correct (see Conformity check).
Make sure that no component located in the vicinity of the electric power-assisted steering system causes an
abnormal temperature rise in the system.
If the fault is still present, contact the Techline.
Note:
After the steering system has been heated a number of times, the EPAS limits assistance itself to protect its
electrical components.
It is normal for the system to do this.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP6/DAE_V09_ALP6/DAE_V0D_ALP6

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-54V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP7 Assistance available for 5 minutes after switching off the ignition
NOTESNote :
This fault may arise if the vehicle speed multiplex signal is faulty or if the ignition is
switched off before the vehicle has come to a complete halt.
Check the vehicle battery voltage.
Check the charge circuit if necessary.
Check that parameter PR003 Vehicle speed is correct (see Conformity check).
Run a multiplex network test (see 88B, Multiplex).
Repair if necessary.
Carry out fault finding on the injection system (see 13B, Diesel injection and 17B, Petrol injection).
Repair if necessary.
Check the fuses for the electric power-assisted steering:
5A AP44 + after ignition fuse on the Protection and Switching Unit.
Repair if necessary.
Check the conformity of the + 12 after ignition feed for the computer:
Electric Power Assisted Steering Computer Connector:
8-track connector track 8+ After ignition
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP7/DAE_V09_ALP7/DAE_V0D_ALP7

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-55V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP8Assistance available but Check Steering warning message
displayed and Service indicator light continuously lit
NOTESNone.
Check the vehicle battery voltage and the condition of the electric power-assisted steering connector.
Repair and check the charge circuit if necessary.
Vdiag 05 and 09: Check status ET020 Steering wheel angle programming which should be STATUS 4. If not,
program the steering wheel angle sensor VP004 Steering wheel angle programming (see Configuration and
programming).
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP8/DAE_V09_ALP8/DAE_V0D_ALP8

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-56V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP9 The vehicle pulls to the right or to the left
NOTESNone.
Check that the casing under the steering wheel does not rub on the steering column or steering wheel.
Check the pressure and condition of the tyres, the condition of the joints and the front axle geometry.
Repair if necessary.
Vdiag 05 and 09:
Refer to status ET020 Steering wheel angle sensor programming, which must be STATUS 4.
Position the vehicle wheels in the straight line driving position (steering centre point).
Refer to parameters PR121 Steering wheel angle which must be in the range - 10 d˚ < X < 10 d˚ and PR007
Steering wheel angle offset compensation which must be in the range - 10 d˚ < X < 10 d˚.
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".
Check the position of the steering wheel on the splines of the steering column.
If parameters PR121, PR007 and status ET020 listed above are not in conformity:
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 using command VP004 Steering wheel angle sensor programming (see
Configuration and programming).
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP9/DAE_V09_ALP9/DAE_V0D_ALP9

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-57V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP10The Service indicator light and the Check Steering message
come on straight away
NOTESNone.
Check the conformity of the battery voltage and carry out fault finding on the charge circuit if necessary.
Check the condition and conformity of the ABS computer connector and its clips.
Check that the ABS computer has an electrical feed (see wiring diagram for the ABS fitted on the vehicle).
Disconnect the 8-track electric power assisted steering computer connector.
Check the condition and conformity of the connector and its clips.
Repair if necessary.
Carry out fault finding on the multiplex network, and repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
EPAS computer
(8-track connector)UCH
(PE2 40-track
connector)Protection and
Switching Unit
(CT1 12-track
connector)
track 7 track 8
track 5 track 18
track 6 track 8
track 16 track 1
track 3 ABS computer
track 2 ABS computer
(see wiring
diagram of the ABS
system installed in
the vehicle)
Repair if necessary.
If the previously checked connections are in conformity, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP10/DAE_V09_ALP10/DAE_V0D_ALP10

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-58V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP11Steering assistance is available with ignition on and engine
stopped, with no warning
NOTESNote :
This fault may arise if the multiplex signal for the operating status of the engine is faulty
or after the ignition is switched off and quickly back on without the engine being started.
Ask the client if he does actually operate the vehicle incorrectly in this way before
applying this fault finding procedure. If necessary, explain correct operation to him.
Disconnect the 8-track connector from the EPAS computer.
Check the condition and conformity of the connector and its clips.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
EPAS computer
(8-track connector)UCH
(PE2 40-track connector)Protection and
Switching Unit
(CT1 12-track connector)
track 7 track 8
track 5 track 18
track 6 track 8
track 16 track 1
track 9 Injection
Computer
track 7 Injection
Computer
(see wiring
diagram of the
injection installed
in the vehicle)
Repair if necessary.
Check the consistency of status ET023 Engine operation by comparison with the actual status of the engine.
If the status is not correct, carry out fault finding on the multiplex network (see 88B, Multiplexing) and the injection
(see 13B, Diesel injection and 17B, Petrol injection).
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP11/DAE_V09_ALP11/DAE_V0D_ALP11

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-59V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP12The engine does not start and the message "steering not
unlocked" or "steering not locked" is displayed after switching
the ignition off
NOTESSpecial notes:
These messages are not displayed because of an electric power-assisted steering
failure.
Check the UCH (see 87B, Passenger compartment connection unit)
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP12/DAE_V09_ALP12/DAE_V0D_ALP12