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

POWER-ASSISTED STEERING
Fault finding – Introduction
36B
36B-2V5 MR-372-J84-36B000$066_fra.mif
136B
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedures (this manual):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
–CLIP
Special tooling required
3. REMINDER
Procedure
To run fault finding on the vehicle's computers, switch on the ignition in fault finding mode (forced + after ignition
feed).
Proceed as follows:
–vehicle card in reader,
–press and hold start button (longer than 5 seconds) with start-up conditions not fulfilled,
–connect the diagnostic tool and perform the required operations.
To cut off + after ignition feed, proceed as follows:
–disconnect the diagnostic tool,
–press the Start button twice briefly (less than 3 seconds),
–ensure that the + after ignition feed has been cut off by checking that the computer indicator lights on the instrument
panel have gone out. Vehicle(s): Scenic II
Function concerned: EPASComputer name: Electric power assisted steering
Vdiag no.: 05, 09, 0D
Special tooling required
Multimeter
Elé. 1681Universal bornier
DAE_V05_ PRELI/DAE_V09_ PRELI/DAE_V0D_ PRELI
MR-372-J84-36B000$066_fra.mif

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 – Interpretation of faults
36B
36B-20V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF033
PRESENT
OR
STOREDMULTIPLEX NETWORK
DEF: CAN connection fault
NOTESConditions for applying the fault finding procedure to stored faults:
Apply this fault finding procedure.
Priority in the event of a number of faults:
Apply the interpretation of faults DF020 Computer supply and DF023 + after ignition
supply first, if they are present or stored.
Notes:
This fault may cause a reduction in steering assistance with the SERVICE indicator
light + Message.
Run fault finding on the multiplex network.
Carry out the necessary repairs.
Disconnect the 8-track connector from the EPAS computer.
Check the condition and conformity of the connector and its clips (terminals).
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
8-track connector of the EPAS computer
track 5 UCH
track 7 UCH
track 4 Instrument panel
track 6 Instrument panel
(see wiring diagram)
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_DF033/DAE_V09_DF033/DAE_V0D_DF033

POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-21V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF035
PRESENT
OR
STOREDVARIABLE POWER ASSISTED STEERING MOTOR
DEF: Internal electronic fault
NOTESConditions 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 a loss of assistance or an absence of steering assistance and also
illuminates the STOP warning light + Message, or assistance is limited to 30% and
the SERVICE indicator light + Message come on.
–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 codes 3, 33, 34, 35, 50, 51, 112, 113, 128, 145 of PR143.
Contact Techline.
Procedure to apply for internal fault codes 4, 5, 100, 114, 115, 129, 130 and 131 of PR143.
Check the condition of the wiring inside the EPAS and make sure that the 3 white EPAS connectors are correctly
locked.
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_DF035/DAE_V09_DF035/DAE_V0D_DF035

POWER-ASSISTED STEERING
Fault finding – Conformity check
36B
36B-28V5 MR-372-J84-36B000$528_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Conformity check
MAIN SCREEN
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool.
Application conditions: engine stopped with the ignition on, without moving the
steering wheel, WHEELS STRAIGHT AHEAD (straight line driving).
FunctionParameter or Status Checked
or ActionDisplay and
notes Fault finding
Computer
electrical supplyPR108:Computer feed voltage10 V < X < 13 VIn the event of a fault with this
parameter, check the insulation,
continuity and 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.
Steering wheel
angle (only for
Vdiag 05 and 09)ET020:Steering wheel angle
sensor programmingSTATUS 4In the event of a fault, apply the
interpretation of status ET020.
Multiplex signalsET023:Engine operationSTOPPED or
STALLEDIn the event of a fault, carry out
fault finding on the injection
system and the multiplex
network.
PR003:Vehicle speed0 mphIn the event of a fault, carry out
fault finding on the ABS and the
multiplex network.
Steering motor
powerPR012:Current absorbed by
the motor0 A (+ 1 A)In the event of a fault, apply the
interpretation of parameter
PR012.
AssistancePR014:Level of assistance
available100% (but
assistance
unavailable)In the event of a fault, apply the
interpretation of parameter
PR014.
TemperaturePR008:Computer temperature0˚C < X < 75˚CIn the event of a fault, apply the
interpretation of fault DF001
Motor thermal protection.
DAE_V05_CCONF/DAE_V09_CCONF/DAE_V0D_CCONF
MR-372-J84-36B000$528_fra.mif

POWER-ASSISTED STEERING
Fault finding – Conformity check
36B
36B-31V5 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.
Application conditions: engine stopped with the ignition on, without moving the
steering wheel, WHEELS STRAIGHT AHEAD (straight line driving).
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
Computer
electrical supplyPR108:Computer feed
voltage10 V < X < 13 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 operationSTOPPED or
STALLEDIn the event of a fault, carry out
fault finding on the injection
system and the multiplex
network.

POWER-ASSISTED STEERING
Fault finding – Conformity check
36B
36B-32V5 MR-372-J84-36B000$528_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
MAIN SCREEN
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool.
Test conditions: engine at idling speed.
STRAIGHT WHEELS (driving in a straight line).
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 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.
Steering wheel
angle (only for
Vdiag 05 and 09)ET020:Steering wheel
angle sensor
programmingSTATUS 4In the event of a fault, apply the
interpretation of status ET020.
Multiplex signalsET023:Engine operationRUNNINGIn the event of a fault, carry out
fault finding on the injection system
and the multiplex network.
PR003:Vehicle speed0 mphIn the event of a fault, carry out
fault finding on the ABS and the
multiplex network.
Steering motor
powerPR012:Current absorbed
by the motorWithout any action
on the steering
wheel:
0 A (± 1 A)
With action on the
steering wheel:
- 96 A < X <96 AIn the event of a fault, apply the
interpretation of parameter PR012.
AssistancePR014:Level of assistance
available100% (maximum
assistance)In the event of a fault, apply the
interpretation of parameter PR014.
TemperaturePR008:Computer
temperature0˚C < X < 7˚CIn the event of a fault, apply the
interpretation of fault DF001 Motor
thermal protection.

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 – 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-50V5 MR-372-J84-36B000$924_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
ALP3 Poor vehicle handling
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Check the pressure and condition of the tyres, the condition of the joints and the front axle geometry.
Check the vehicle battery voltage and the condition of the battery terminals.
Repair if necessary.
Check the status and presence of the Electric Power Steering system power supply fuse.
Repair if necessary.
Check the insulation, continuity and absence of interference resistance on the wiring harness between the
battery and the 2-track EPAS connector.
Repair if necessary.
Check that status ET026 Computer calibration corresponds to the vehicle equipment.
Configure the computer correctly using the diagnostic tool, if necessary (see Configuration and Programming).
If the fault is still present, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_ALP3/DAE_V09_ALP3/DAE_V0D_ALP3