2007 RENAULT SCENIC ABS

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-34V5 MR-372-J84-36B000$528_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
Sub-function: assistance (continued)
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
Multiplex signalsPR003:Vehicle speed0 mphIn the event of a fault,
carry out fault finding on
the ABS and the
multiplex network.
Steering motor
powerPR013:Setpoint for 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 PR013.
PR012: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.

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
36B
36B-40V5 MR-372-J84-36B000$726_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Parameter summary table
Tool parameter Diagnostic tool title
PR001Torque applied to the steering wheel
PR003Vehicle speed
PR006Steering motor torque setpoint
PR007Steering wheel angle offset compensation (only for Vdiag 05 and 09)
PR008Computer temperature
PR009Steering motor temperature
PR012Current absorbed by the motor
PR013Setpoint for current absorbed by the motor
PR014Level of assistance available
PR108Computer feed voltage
PR121Steering wheel angle (only for Vdiag 05 and 09)
MR-372-J84-36B000$726_fra.mif

POWER-ASSISTED STEERING
Fault finding – Interpretation of parameters
36B
36B-44V5 MR-372-J84-36B000$792_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
PR012
PR013
CURRENT ABSORBED BY THE MOTOR
SETPOINT FOR CURRENT ABSORBED BY THE MOTOR
NOTESNone.
Parameter PR013 indicates the electrical power (strength) setpoint sent by the EPAS computer to the steering
motor as a function of the torque applied to the steering wheel.
Parameter PR012 indicates the electrical power actually consumed by the EPAS motors.
These two parameters are positive when the steering wheel is turned to the right and negative when turned to the
left.
The value of parameter PR013 Rated motor power should be almost equal to the value of parameter PR012
Power absorbed by the motor.
If the parameters are not in conformity with the values shown in the Conformity check, or if they are not equal,
refer to the interpretation of fault DF035 Variable power steering motor.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V05_PR012/DAE_V05_PR013/DAE_V09_PR012 /DAE_V09_PR013/DAE_V0D_PR012/DAE_V0D_PR013

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