wheel RENAULT TWINGO 2009 2.G Chasiss - Power Assisted Steering User Guide

36B-23
MR-413-X44-36B000$469.mif
V2
POWER – ASSISTED STEERING
Fault finding – Interpretation of faults
EPAS
Vdiag No.: 04 - 08
36B
DF039
DF048
DF050
DF054
PRESENT
OR
STOREDTORQUE SENSOR CIRCUIT
TORQUE SENSOR CIRCUIT
TORQUE SENSOR CIRCUIT SIGNAL 2
TORQUE SENSOR
CO.O: Open circuit or short circuit to earth
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, then returning it to the centre.
Notes:
This fault causes:
Sudden loss of steering assistance with illumination of the Fault warning light +
STOP + Beep.
Use the Wiring Diagram Technical Note for New Twingo.
With + after ignition feed off, check the connection and condition (possible wiring damage) of connector C and
its clips of component 502.
If the connector is faulty (see Technical Note 6015A, Electrical wiring repair, Wiring: Precautions for repair)
repair the wiring, otherwise replace it.
Visually check the condition of the wiring harness of component 850 (for possible wiring damage).
If the connection or connections are faulty (see Technical Note 6015A, Electrical wiring repair, Wiring:
Precautions for repair), repair the wiring, otherwise replace the steering column.
With the connectors of components 502 and 850 disconnected, check the continuity and insulation of the
following connections between components 502 and 850.
●Connection 109K
●Connection 109M
●Connection 109N
●Connection 109P
If the connection or connections are faulty (see Technical Note 6015A, Electrical wiring repair, Wiring:
Precautions for repair), repair the wiring, otherwise replace the steering column.
With + after ignition feed off, disconnect and check the condition and conformity of connector C and its clips.
Visually check the condition of the torque sensor wiring harness.
In the event of a nonconformity, replace the steering column.
Check the condition of the connection pins of components 502 and 850.
Contact the Techline in the event of any nonconformity.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any other faults.
Clear the stored faults.
Check that the EPAS is working.
DAE_V04_DF039/DAE_V08_DF039/DAE_V04_DF048/DAE_V08_DF048
DAE_V04_DF050/DAE_V08_DF050/DAE_V04_DF054/DAE_V08_DF054

36B-25
MR-413-X44-36B000$536.mif
V2
36B
POWER – ASSISTED STEERING
Fault finding – Conformity check
MAIN SCREEN
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool.
Application conditions: ignition on, engine stopped, no movement of
the steering wheel, front wheels set straight ahead.
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
Wire informationPR003:Vehicle speedX = 0 mph (km/h)In the event of a fault, apply the
interpretation of parameter
PR003.
PR004: Engine speed0 = rpmIn the event of a fault, apply the
interpretation of parameter
PR004.
AssistancePR001: Torque applied
to the steering
wheel0 Nm (+ 0.2 Nm)In the event of a fault, apply the
interpretation of parameter
PR001.
Steering wheel
angle
(Vdiag 04 only)PR121:Steering wheel
angle- 5˚ < X < 5˚In the event of a fault, apply the
interpretation of parameter
PR121.
EPAS
Vdiag No.: 04 - 08
MR-413-X44-36B000$536.mif
DAE_V04_CCONF/DAE_V08_CCONF

36B-26
MR-413-X44-36B000$536.mif
V2
POWER – ASSISTED STEERING
Fault finding – Conformity check
EPAS
Vdiag No.: 04 - 08
36B
SUB-FUNCTION: ASSISTANCE
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool.
Application conditions: ignition on, engine stopped, no movement of
the steering wheel, front wheels set straight ahead.
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
Power supplyPR032:Feed voltage0 VIn the event of a fault on this
parameter, apply the fault finding
procedure of DF037 Battery voltage.
Wire informationPR003:Vehicle speed0 mphIn the event of a fault, apply the
interpretation of parameter PR003.
PR004:Engine speed0 rpmIn the event of a fault, apply the
interpretation of parameter PR004.
Steering wheel
angle
(Vdiag 04 only)ET020:Steering
wheel angle
sensor
programmingNot programmedIn the event of a fault, apply the
interpretation of status ET020.
PR121:Steering
wheel angle- 5˚ < X < 5˚In the event of a fault, apply the
interpretation of parameter PR121.
FaultsET021:Motor thermal
protection
indicatorNot activeIn the event of a fault, apply the
interpretation of status ET021.
ET025:Fault indicatorOffIn the event of a fault, apply the
interpretation of status ET025.

36B-27
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: ignition on, engine stopped, no movement of the
steering wheel, front wheels set 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)

36B-28
MR-413-X44-36B000$536.mif
V2
POWER – ASSISTED STEERING
Fault finding – Conformity check
EPAS
Vdiag No.: 04 - 08
36B
MAIN SCREEN
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
Wire informationPR003:Vehicle speed0 mphIn the event of a fault, apply the
interpretation of parameter
PR003.
PR004:Engine speed850 +/- 50 rpmIn the event of a fault, apply the
interpretation of parameter
PR004.
Assistance PR001:Torque applied
to the steering
wheel0 Nm (+ 0.2 Nm)In the event of a fault, apply the
interpretation of parameter
PR001.
Steering wheel
angle
(Vdiag 04 only)PR121:Steering wheel
angle- 5˚ < X < 5˚In the event of a fault, apply the
interpretation of parameter
PR121.

36B-29
MR-413-X44-36B000$536.mif
V2
POWER – ASSISTED STEERING
Fault finding – Conformity check
EPAS
Vdiag No.: 04 - 08
36B
SUB-FUNCTION: ASSISTANCE
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
Power supplyPR032:Feed voltage12 < X < 16 VIn the event of a fault on this
parameter, apply the fault finding
procedure of DF037 Battery
voltage.
Wire informationPR003: Vehicle speed0 mphIn the event of a fault, apply the
interpretation of parameter
PR003.
PR004:Engine speed850 +/- 50 rpmIn the event of a fault, apply the
interpretation of parameter
PR004.
Steering wheel
angle (Vdiag 04
only)ET020:Steering wheel
angle sensor
programmingNot programmedIn the event of a fault, apply the
interpretation of status ET020.
PR121:Steering wheel
angle- 5˚ < X < 5˚In the event of a fault, apply the
interpretation of parameter
PR121.
FaultsET021:Motor thermal
protection
indicatorNot activeIn the event of a fault, apply the
interpretation of status ET021.
ET025:Fault indicatorOffIn the event of a fault, apply the
interpretation of status ET025.

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)

36B-31
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

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

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