check engine RENAULT SCENIC 2007 J84 / 2.G Power Assisted Steering Owner's Manual

POWER-ASSISTED STEERING
Fault finding – Conformity check
36B
36B-35V5 MR-372-J84-36B000$528_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
Sub-function: power
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool.
Test conditions: engine at idling speed.
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
Computer
electrical supplyPR108:Computer feed
voltage12 V < X < 16 VIn the event of a fault with this
parameter, check the insulation,
continuity and the absence of
interference resistance on the
computer earths and feeds (see
wiring diagrams). If the fault is still
present, carry out fault finding on
the charge circuit.
TemperaturesPR008:Computer
temperature0˚C < X < 75˚CIn the event of a fault, apply the
interpretation of fault DF001
Motor thermal protection.
PR009:Steering motor
temperature0˚C < X < 130˚CIn the event of a fault, apply the
interpretation of fault DF001
Motor thermal protection.
Multiplex signalsET023:Engine operationRUNNINGIn the event of a fault, carry out
fault finding on the injection
system and the multiplex network.

POWER-ASSISTED STEERING
Fault finding – Customer complaints
36B
36B-47V5 MR-372-J84-36B000$858_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Customer complaints
NOTESOnly refer to the customer complaints after performing a complete check using the
diagnostic tool.
NO DIALOGUE WITH THE COMPUTER ALP1
LOSS OF VEHICLE ASSISTANCE WITHOUT WARNING ALP2
POOR VEHICLE HANDLINGALP3
THE STEERING WHEEL DOES NOT RETURN BY ITSELF
TO THE CENTRE AT LOW SPEED: STEERING WHEEL
RETURN TO CENTRE POINT INACTIVE (ONLY FOR
VDIAG 05 AND 09)ALP4
UNDER-ASSISTANCE AT LOW SPEED AND OVER-
ASSISTANCE AT HIGH SPEED WITHOUT WARNINGALP5
TOO LITTLE ASSISTANCEALP6
ASSISTANCE AVAILABLE FOR 5 MIN. AFTER
SWITCHING OFF THE IGNITIONALP7
ASSISTANCE AVAILABLE BUT CHECK STEERING
WARNING MESSAGE DISPLAYED AND SERVICE
INDICATOR LIGHT CONTINUOUSLY LITALP8
THE VEHICLE PULLS TO THE RIGHT OR TO THE LEFT ALP9
SERVICE INDICATOR LIGHT AND CHECK STEERING
MESSAGE COME ON STRAIGHT AWAYALP10
STEERING ASSISTANCE IS AVAILABLE WITH IGNITION
ON AND ENGINE STOPPED, WITH NO WARNINGALP11
THE ENGINE DOES NOT START AND THE MESSAGE
"STEERING NOT UNLOCKED" IS DISPLAYED
OR
THE MESSAGE "STEERING NOT UNLOCKED" IS
DISPLAYED AFTER THE IGNITION IS SWITCHED OFFALP12
MR-372-J84-36B000$858_fra.mif

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-48V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
ALP1 No dialogue with the computer
NOTESNone.
Run fault finding on the multiplex network.
Check the voltage of the vehicle battery (the EPAS system only reacts between 10 V and 18 V).
Repair if necessary.
Try the diagnostic tool on another vehicle.
Check:
–the connection between the diagnostic tool and the diagnostic probe (lead in good condition),
–the connection between the diagnostic sensor and the diagnostic socket (lead in good condition).
Check the condition of the EPAS fuses and their contacts:
80A BP81 Power fuse in the engine fuse box.
5A AP44 + after ignition fuse on the UPC.
Check for the presence of + 12 V battery feed on track 16, and + 12 V after ignition feed on track 1 and an earth
on track 5 and on track 4 of the diagnostic socket.
Repair if necessary.
Disconnect the two EPAS computer connectors.
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).
Electric Power Assisted Steering Computer Connector:
2-track connector track 1+ battery feed
2-track connector track 2Earth
8-track connector track 8+ After ignition
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the wiring harness between
the diagnostic socket and the Electric Power Assisted Steering computer connector.
Electric Power Assisted Steering Computer Connector:
8-track connector track 5 track 14 Diagnostic socket
8-track connector track 7 track 6 Diagnostic socket
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP1/DAE_V09_ALP1/DAE_V0D_ALP1
MR-372-J84-36B000$924_fra.mif

POWER-ASSISTED STEERING
Fault finding – Fault Finding Chart
36B
36B-49V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP2 Loss of vehicle assistance without warning
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
The vehicle is no longer assisted if the Electric Power Steering fuse is damaged or supply is lost. The steering is
equivalent to manual steering, manoeuvrable when driving even at low speeds, but very difficult to manoeuvre
when stopped.
Since it is no longer being supplied, the EPAS computer is not capable of lighting the warning light, but the
instrument panel lights the STOP warning light + Message 4 seconds after the loss of the feed causing the loss
of assistance.
The driver will only become aware of the fault through noticing the loss of assistance at the steering wheel.
Check the fuses for the electric power-assisted steering:
Power fuse 80A BP81 in the engine fuse box.
5A AP44 + after ignition fuse on the UPC.
Check the condition of the electric power-assisted steering connectors and repair if necessary.
Check that the electrical feeds to the computer are correct:
2-track connector track 2vehicle earth
2-track connector track 1+ battery feed
8-track connector track 8+ after ignition feed
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the connections between the electric
power-assisted steering computer and the instrument panel.
8-track connector track 6 track 30 of the instrument panel
8-track connector track 4 track 29 of the instrument panel
Check that the steering column and steering rack are in sound mechanical condition.
Repair if necessary.
Make sure that the front axle components, such as the track rod ends and shock absorber base plates, are in sound
mechanical condition.
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP2/DAE_V09_ALP2/DAE_V0D_ALP2

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