2009 RENAULT TWINGO Chasiss - Power Assisted Steering Workshop Manual

36B-33
MR-413-X44-36B000$670.mif
V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of statuses36B
EPAS
Vdiag No.: 04
ET021
THERMAL PROTECTION INDICATOR
NOTESSpecial note:
The status is declared correct when it is NOT ACTIVE.
If status ET021 is active after approximately one hour without any manoeuvring, carry out the fault finding
procedure for fault DF001 Motor thermal protection.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_ET021/ DAE_V08_ET021

36B-34
MR-413-X44-36B000$670.mif
V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of statuses36B
EPAS
Vdiag No.: 04
ET025
FAULT INDICATOR
NOTESSpecial note:
The status is declared correct when it is NOT ACTIVE.
If status ET025 is ACTIVE, consult the possible faults.
If the fault is still present, contact Techline.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_ET025/ DAE_V08_ET025

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

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

36B-37
MR-413-X44-36B000$804.mif
V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of parameters
EPAS
Vdiag No.: 04 - 08
36B
PR003
VEHICLE SPEED
NOTESNone.
This parameter indicates the vehicle speed sent by the ABS/ESP on the multiplex line.
If the parameter does not correspond to the values indicated in the Conformity check, consult the interpretation
of fault DF043 Vehicle speed.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_PR003/DAE_V08_PR003

36B-38
MR-413-X44-36B000$804.mif
V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of parameters
EPAS
Vdiag No.: 04 - 08
36B
PR004
ENGINE SPEED
NOTESNone.
This parameter indicates the engine speed sent by the injection computer.
If the parameter does not correspond to the values indicated in the Conformity check, consult the interpretation
of fault DF028 No engine speed.
AFTER REPAIRPerform a test using the diagnostic tool.
DAE_V04_PR004/DAE_V08_PR004

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

36B-40
MR-413-X44-36B000$804.mif
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