Page 30 of 54
36B-30
MR-413-X44-36B000$536.mif
V2
POWER – ASSISTED STEERING
Fault finding – Conformity check
EPAS
Vdiag No.: 04 - 08
36B
SUB-FUNCTION: ASSISTANCE (CONTINUED)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool.
Application conditions: engine at idle speed, no movement of the steering
wheel, front wheels straight ahead.
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
AssistancePR001:Torque applied
to the steering
wheel0 Nm (+ 0.2 Nm)In the event of a fault, apply the
interpretation of parameter
PR001.
OutputPR132: Current setpoint
(45 A)0 A
Note: these two
parameters must be
approximately the
same.In the event of a fault, apply the
interpretation of parameters
PR132 and PR130.
PR130: Motor power (45
A)
PR131: Current setpoint
(60 A)0 A
Note: these two
parameters must be
approximately the
same.In the event of a fault, apply the
interpretation of parameters
PR131 and PR129.
PR129: Motor power (60
A)
Page 31 of 54
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MR-413-X44-36B000$603.mif
V2
36B
POWER – ASSISTED STEERING
Fault finding – Status summary table
Tool status Diagnostic tool title
ET020Steering wheel angle programming
ET021Motor thermal protection indicator
ET025Fault indicator
EPAS
Vdiag No.: 04 - 08
MR-413-X44-36B000$603.mif
Page 32 of 54
36B-32
MR-413-X44-36B000$670.mif
V2
36B
POWER – ASSISTED STEERING
Fault finding – Interpretation of statuses
ET020
PROGRAMMING THE STEERING WHEEL ANGLE SENSOR
NOTESNote:
Deal first with DF038 Angle sensor.
Special note:
Every time the ignition is switched on, status ET020 is NOT PROGRAMMED.
Programming is performed automatically each time the vehicle is driven.
Drive the vehicle, then switch off the ignition and check that status ET020 is PROGRAMMED.
If status ET020 remains NOT PROGRAMMED after the vehicle is driven, carry out the fault finding procedure for
fault DF038 Angle sensor.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_ET020
EPAS
Vdiag No.: 04
MR-413-X44-36B000$670.mif
Page 35 of 54
36B-35
MR-413-X44-36B00$737.mif
V2
36B
POWER – ASSISTED STEERING
Fault finding – Parameter summary table
Tool parameter Diagnostic tool title
PR001Torque applied to the steering wheel
PR003Vehicle speed
PR004Engine speed
PR121Steering wheel angle
PR129Motor power (60 A)
PR130Motor power (45 A)
PR131Current setpoint (60 A)
PR132Current setpoint (45 A)
EPAS
Vdiag No.: 04 - 08
MR-413-X44-36B00$737.mif
Page 36 of 54
36B-36
MR-413-X44-36B000$804.mif
V2
36B
POWER – ASSISTED STEERING
Fault finding – Interpretation of parameters
PR001
TORQUE APPLIED TO THE STEERING WHEEL
NOTESNone.
This parameter indicates the torque applied by the driver to the steering column.
If the parameter does not conform with the values indicated in the Conformity check, consult the interpretation of
fault DF054 Torque sensor.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_PR001/DAE_V08_PR001
EPAS
Vdiag No.: 04 - 08
MR-413-X44-36B000$804.mif
Page 39 of 54
36B-39
MR-413-X44-36B000$804.mif
V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of parameters36B
EPAS
Vdiag No.: 04
PR121
STEERING WHEEL ANGLE
NOTESNone.
This parameter indicates the position of the steering wheel in relation to zero.
The steering wheel angle programming is performed automatically by the power-assisted steering computer
every time the vehicle is driven.
This parameter is positive to the right and negative to the left.
If the parameter does not correspond to the values indicated in the Conformity check, consult the interpretation
of fault DF038 Angle sensor.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_PR121
Page 40 of 54
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V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of parameters
EPAS
Vdiag No.: 04 - 08
36B
PR129
PR131
MOTOR POWER (60 A)
CURRENT SETPOINT (60 A)
NOTESNone.
Parameter PR131 Current setpoint (60 A) indicates the current setpoint (power) sent by the EPAS computer to
the steering motor according to the torque applied to the steering wheel. Parameter PR129 Motor power (60 A)
indicates the electric current actually consumed by the EPAS motor.
The value of parameter PR131 Current setpoint (60 A) must be approximately equal to the value of parameter
PR129 Motor power (60 A).
If the parameters are not the same, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_PR129/DAE_V04_PR131/ DAE_V08_PR129/DAE_V08_PR131
Page 41 of 54
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V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of parameters
EPAS
Vdiag No.: 04 - 08
36B
PR130
PR132
MOTOR POWER (45 A)
CURRENT SETPOINT (45 A)
NOTESNone.
Parameter PR130 Current setpoint (45 A) indicates the current setpoint (power) sent by the EPAS computer to
the steering motor according to the torque applied to the steering wheel. Parameter PR132 Motor power (45 A)
indicates the electric current actually consumed by the EPAS motor.
The value of parameter PR130 Current setpoint (45 A) must be approximately equal to the value of parameter
PR132 Motor power (45 A).
If the parameters are not the same, contact the Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_PR130/DAE_V04_PR132/ DAE_V08_PR130/DAE_V08_PR132