POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-20V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF033
PRESENT
OR
STOREDMULTIPLEX NETWORK
DEF: CAN connection fault
NOTESConditions for applying the fault finding procedure to stored faults:
Apply this fault finding procedure.
Priority in the event of a number of faults:
Apply the interpretation of faults DF020 Computer supply and DF023 + after ignition
supply first, if they are present or stored.
Notes:
This fault may cause a reduction in steering assistance with the SERVICE indicator
light + Message.
Run fault finding on the multiplex network.
Carry out the necessary repairs.
Disconnect the 8-track connector from the EPAS computer.
Check the condition and conformity of the connector and its clips (terminals).
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
8-track connector of the EPAS computer
track 5 UCH
track 7 UCH
track 4 Instrument panel
track 6 Instrument panel
(see wiring diagram)
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF033/DAE_V09_DF033/DAE_V0D_DF033
POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-21V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF035
PRESENT
OR
STOREDVARIABLE POWER ASSISTED STEERING MOTOR
DEF: Internal electronic fault
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.
Notes:
This fault causes a loss of assistance or an absence of steering assistance and also
illuminates the STOP warning light + Message, or assistance is limited to 30% and
the SERVICE indicator light + Message come on.
–The computer records an occurrence context (computer operating values frozen
when fault occurs). To view this information, click on the fault description (camera
symbol). Within these values, parameter PR143 Internal fault code gives the fault
finding procedure to apply.
Procedure to apply for internal fault codes 3, 33, 34, 35, 50, 51, 112, 113, 128, 145 of PR143.
Contact Techline.
Procedure to apply for internal fault codes 4, 5, 100, 114, 115, 129, 130 and 131 of PR143.
Check the condition of the wiring inside the EPAS and make sure that the 3 white EPAS connectors are correctly
locked.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF035/DAE_V09_DF035/DAE_V0D_DF035
POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-22V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09
DF038
PRESENT
OR
STOREDANGLE SENSOR
1.DEF: Sensor internal electrical fault
2.DEF: Absence of sensor signal
3.DEF: Values outside limits
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.
Notes:
This fault causes an absence of steering wheel return (no warning light or message).
–The computer records an occurrence context (computer operating values frozen
when fault occurs). To view this information, click on the fault description (camera
symbol). Within these values, parameter PR143 Internal fault code gives the fault
finding procedure to apply.
Procedure to apply for internal fault codes 195 and 196 of PR143.
Position the vehicle wheels in the straight line driving position (steering centre point).
Refer to parameters PR121 Steering wheel angle and PR007 Steering wheel angle offset compensation.
Both parameters must be between - 10˚ < X < 10˚.
Turn the steering wheel to full right lock then to full left lock, and check that the parameter varies within the
tolerances given in the "Conformity check".
Refer to status ET020 Steering wheel angle sensor programming, which must be STATUS 4.
If parameters PR121, PR007 and status ET020 are not correct:
Place the vehicle on a front axle adjusting bench.
Position the vehicle wheels in the straight line driving position (steering centre point).
Program the steering wheel angle via command VP004 Steering wheel angle sensor programming (see
Configuration and programming, section A).
Remove the fault, start the engine and check that the EPAS functions correctly by turning the steering wheel from
lock to lock (parking manoeuvres).
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF038/DAE_V09_DF038
POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-23V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09
DF038
CONTINUED
Procedure to apply for internal fault codes 192, 193 and 194 of PR143.
Check the fault occurrence context for internal fault codes 193 and 194. If PR108 Computer supply voltage
is less than 10 V, the fault is due to a battery undervoltage.
Check the vehicle battery voltage.
Check the tightness and the condition of the battery terminals.
Check the charge circuit if necessary.
Check the condition of the 3 white EPAS connectors and check that they are locked correctly.
In the event of a fault, check the insulation, continuity and the absence of interference resistance on the
following connection:
2-track connector track 1 + 12 V before ignition feed
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-25V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF054
PRESENT
OR
STOREDTORQUE SENSOR
DEF: Sensor internal electronic fault
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:
Loss or absence of steering assistance with STOP warning light + Message
lighting up.
–The computer records an occurrence context (computer operating values frozen
when fault occurs). To view this information, click on the fault description (camera
symbol).
Within these values, parameter PR143 Internal fault code gives the fault finding
procedure to apply.
If, in the fault occurrence context (computer operating values frozen when fault
occurs) PR108 Computer supply voltage is less than 10 V, check the battery
voltage, the tightness and the condition of the battery terminals and check the
charging circuit.
Procedure to apply for internal fault codes 1 and 69 of PR143.
Contact Techline.
Procedure to apply for internal fault codes 48, 66, 64, 65 and 67 of PR143.
Check the condition of the 3 white EPAS connectors and check that they are locked correctly.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF054/DAE_V09_DF054/DAE_V0D_DF054
POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-27V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF057
PRESENT
OR
STOREDMULTIPLEX VEHICLE SPEED SIGNAL
DEF: Invalid signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after a road test.
Notes:
This fault causes an unsuitable level of assistance and the SERVICE indicator light
+ Message come on.
Carry out fault finding on the multiplex network, and repair if necessary.
Carry out fault finding on the ABS (see 38C, Anti-lock braking system). If the ABS signals no fault and the EPAS
is the only system signalling the fault, contact the Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF057/DAE_V09_DF057/DAE_V0D_DF057
POWER-ASSISTED STEERING
Fault finding – Conformity check
36B
36B-28V5 MR-372-J84-36B000$528_fra.mif
EPAS
Vdiag no.: 05, 09,
0DPOWER-ASSISTED STEERING
Fault finding – Conformity check
MAIN SCREEN
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 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 operationSTOPPED or
STALLEDIn 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 motor0 A (+ 1 A)In the event of a fault, apply the
interpretation of parameter
PR012.
AssistancePR014:Level of assistance
available100% (but
assistance
unavailable)In the event of a fault, apply the
interpretation of parameter
PR014.
TemperaturePR008:Computer temperature0˚C < X < 75˚CIn the event of a fault, apply the
interpretation of fault DF001
Motor thermal protection.
DAE_V05_CCONF/DAE_V09_CCONF/DAE_V0D_CCONF
MR-372-J84-36B000$528_fra.mif
POWER-ASSISTED STEERING
Fault finding – Conformity check
36B
36B-30V5 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.
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
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 motor0 A (+ 1 A)In the event of a fault,
apply the interpretation
of parameter PR013.
PR012:Current absorbed by
the motor0 A (+ 1 A)In the event of a fault,
apply the interpretation
of parameter PR012.