Page 57 of 59
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
Page 58 of 59
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
Page 59 of 59
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
