torque RENAULT SCENIC 2006 J84 / 2.G Power Assisted Steering Workshop Manual
[x] Cancel search | Manufacturer: RENAULT, Model Year: 2006, Model line: SCENIC, Model: RENAULT SCENIC 2006 J84 / 2.GPages: 56, PDF Size: 0.18 MB
Page 8 of 56
POWER ASSISTED STEERING
Fault finding - System operation
36B
36B - 8V6 MR-366-X84-36B000$132_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12
SYSTEM OPERATION
On this vehicle, the steering system is power-assisted by an electric motor (mounted on the steering column). The
driver's actions are translated by a torque sensor, which measures the force applied to the steering wheel by the
driver, and by an angle measuring sensor. The steering wheel angle signal is used by the electronic stability program
computer for the trajectory control programming.
Assistance is provided by means of an electric motor which applies an appropriate torque to the steering column, in
one direction or the other.
A computer controls this assistance according to several vehicle environment parameters, including the vehicle
speed.
NOTE
Depending on the operating conditions and the operations performed on the vehicle before switching on the ignition,
the assistance system may take a certain time to be activated after engine starting; this also applies after battery cut-
off or switching off the ignition.
Fault finding warning lights illumination programming:
Slow flashing of the Service warning light at 2 Hz: the electric power steering system is in fault finding mode.
Rapid flashing of the Service warning light at 8 Hz accompanied by the Check steering message: the steering
wheel angle sensor is not calibrated and not indexed.
Service warning light continuously lit with Check steering displayed on instrument panel: signal received by the
EPAS computer.
–assistance equal to that provided at a speed of 24 mph (40 km/h) if vehicle speed signal is absent or incorrect,
–angle sensor signal invalid: steering wheel angle sensor not calibrated (no active recall).
STOP warning light continuously lit with steering defective displayed on the instrument panel: fault in the EPAS
system.
If the fault is still present after repair, contact the Techline.
Angle sensor programming (initialisation)
The steering wheel angle sensor is initialised after the ignition is switched on. The sensor is not initialised until the
steering wheel has gone through a quarter turn left or right. If this turn is not carried out, the steering wheel angle
value reading will be 1.2 degrees higher or lower than the actual value.
Check consistency of ET020 Steering wheel angle sensor programming. Note:
If the computer detects a fault, the level of assistance can be modified depending on how serious the fault is.
An incorrect or absent vehicle speed signal results in fixed, unsatisfactory assistance.
Page 14 of 56
POWER ASSISTED STEERING
Fault finding - Fault summary table36B
36B - 14V6 MR-366-X84-36B000$396_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12
Fault finding - Fault summary table
Tool faultASSOCIATED FAULT
FINDING CODEDiagnostic tool title STATUS
DF00256 08Computer0D
DF02056 01Computer supply12
DF033D000Multiplex network0E
DF03556 06Variable power assisted steering motor0D
DF03856 05Angle sensor0D, 06
DF05356 02Computer configuration0D, 16
DF05456 04Torque sensor0D
DF05556 07Computer Memory0D
DF05756 09Vehicle speed multiplex signal0D, 0E
DF05956 03Angle sensor0D, 06
MR-366-X84-36B000$396_eng.mif
Page 21 of 56
POWER ASSISTED STEERING
Fault finding - Interpretation of faults
36B
36B - 21V6 MR-366-X84-36B000$462_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12
DF054
PRESENT
OR
STOREDTORQUE SENSOR
DEF : Sensor internal electronic fault
NOTESWhen the fault appears as present or stored, do not clear the fault.
IMPORTANT
This fault is a safety fault. It may occur intermittently.
Contact the Techline.
AFTER REPAIRNone
DAETRW_V04_DF054/DAETRW_V08_DF054/DAETRW_V06_DF054/DAETRW_V0C_DF054/
DAETRW_V12_DF054
Page 27 of 56
POWER ASSISTED STEERING
Fault finding - Conformity check
36B
36B - 27V6 MR-366-X84-36B000$528_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12
SUB-FUNCTION: ASSISTANCE
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as examples.
Execution conditions: ENGINE STOPPED, IGNITION ON.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Steering
wheel
angleET020:Steering wheel
angle sensor
programmingStatus 4: calibrated
and initialisedIn the event of a fault, refer to
the interpretation of status
ET020.
PR121:Steering wheel
angle0˚ with the wheels set
straight ahead
+ or - 580˚ at full lockIn the event of a fault, consult
the interpretation of PR121.
2Vehicle
speedPR003:Vehicle speed0 mph (km/h) when
stationaryIn the event of a fault, test the
multiplex network.
3TorquePR001:Torque applied to
the steering wheel0 Nm ± 0.2 Nm
with no action on the
steering wheelIn the event of a fault, consult
the interpretation of PR001.
PR006:Steering motor
torque setpoint0 Nm ± 0.2 NmIn the event of a fault, consult
the interpretation of PR006.
4Motor
powerPR012:Current absorbed
by the motor0 A < X < 1 AIn the event of a fault, consult
the interpretation of PR012.
PR013:Setpoint for
current absorbed
by the motor0 A < X < 1 AIn the event of a fault, consult
the interpretation of PR013.
5Thermal
protectionPR119:Motor thermal
protection
indicatorInterior temperature
± 5˚CIf PR119 > 60 ˚C, thermal
protection is activated.
The level of assistance
PR014 = 15 %.
To deactivate the thermal
protection, do not operate the
EPAS for 15 minutes. PR014:Level of
assistance
available0 % or 99 %
depending on Vdiag
15 % if thermal
protection activated.
Page 31 of 56
POWER ASSISTED STEERING
Fault finding - Conformity check
36B
36B - 31V6 MR-366-X84-36B000$528_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12
SUB-FUNCTION: ASSISTANCE
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as examples.
Test condition: ENGINE AT IDLE SPEED.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Steering
wheel
angleET020:Steering wheel
angle sensor
programmingStatus 4: calibrated
and initialisedIn the event of a fault, refer to
the interpretation of status
ET020.
PR121:Steering wheel
angle0˚ with the wheels set
straight ahead
+ or - 570˚ ± 20˚ at full
lockIn the event of a fault, consult
the interpretation of PR121.
2Vehicle
speedPR003:Vehicle speed0 mph (km/h) when
stationaryIn the event of a fault, test the
multiplex network.
3TorquePR001:Torque applied to
the steering wheel- 11 Nm < X
< + 11 Nm
with action on the
steering wheelIn the event of a fault, consult
the interpretation of PR001.
PR006:Steering motor
torque setpoint0 Nm ± 0.2 NmIn the event of a fault, consult
the interpretation of PR006.
4Motor
powerPR012:Current absorbed
by the motor- 90 < X < 90A ± 5AIn the event of a fault, consult
the interpretation of PR012.
PR013:Setpoint for
current absorbed
by the motor- 90 < X < 90A ± 5ANone
5Thermal
protectionPR119:Motor thermal
protection
indicatorInterior temperature
± 5 ˚CIf PR119 > 60 ˚C, thermal
protection is activated.
The assistance level PR140
= 15 %.
To deactivate thermal
protection, switch off the
engine and do not operate the
EPAS for 15 minutes. PR014:Level of
assistance
available100 % idle speed
15 % if thermal
protection activated.
Page 38 of 56
POWER ASSISTED STEERING
36B
36B - 38V6 MR-366-X84-36B000$726_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12POWER ASSISTED STEERING
Fault finding - Parameter summary table
Tool parameter Diagnostic tool title
PR001Torque applied to the steering wheel
PR003Vehicle speed
PR006Steering motor torque setpoint
PR012Current absorbed by the motor
PR013Setpoint for current absorbed by the motor
PR014Level of assistance available
PR108Computer feed voltage
PR119Motor thermal protection indicator
PR121Steering wheel angle
MR-366-X84-36B000$726_eng.mif
Page 40 of 56
POWER ASSISTED STEERING
Fault finding - Parameter interpretation
36B
36B - 40V6 MR-366-X84-36B000$792_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12
PR012
CURRENT ABSORBED BY THE MOTOR
NOTESNone
Parameter PR013 indicates the stipulated current setpoint for the steering motor.
This current depends:
–on the vehicle speed,
–on the torque applied to the steering wheel.
Parameter PR012 indicates the current actually consumed by the steering motor.
The value of parameter PR013 Setpoint for current absorbed by motor should be almost equal to the value of
parameter PR012 Current absorbed by motor.
If the parameters do not match the values indicated in the Conformity check, consult the interpretation of fault
DF035 Variable power assisted steering motor.
AFTER REPAIRCarry out a road test, followed by a check with the diagnostic tool.
DAETRW_V04_PR012/DAETRW_V08_PR012/DAETRW_V06_PR012/DAETRW_V0C_PR012 /
DAETRW_V12_PR012
Page 41 of 56
POWER ASSISTED STEERING
Fault finding - Parameter interpretation
36B
36B - 41V6 MR-366-X84-36B000$792_eng.mif
PAS
Vdiag No.: 04, 06, 08, 0C
and 12
PR013
SETPOINT FOR CURRENT ABSORBED BY THE MOTOR
NOTESNone
Parameter PR013 indicates the stipulated current setpoint for the steering motor.
This current depends:
–on the vehicle speed,
–on the torque applied to the steering wheel.
Parameter PR012 indicates the current actually consumed by the steering motor.
The value of parameter PR013 Setpoint for current absorbed by motor should be almost equal to the value of
parameter PR012 Current absorbed by motor.
If the parameters do not match the values indicated in the Conformity check, consult the interpretation of fault
DF035 Variable power assisted steering motor.
AFTER REPAIRCarry out a road test, followed by a check with the diagnostic tool.
DAETRW_V04_PR013/DAETRW_V08_PR013/DAETRW_V06_PR013/DAETRW_V0C_PR013 /
DAETRW_V12_PR013