POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-15V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF002
PRESENT
OR
STOREDCOMPUTER
DEF: Computer fault
NOTESPriority in the event of a number of faults:
In the event of an accumulation of faults, deal with the other present and stored faults
before applying the interpretation for this fault.
Conditions 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 assistance or a loss of steering assistance
and also illuminates the STOP indicator light + Message or assistance is limited to
30% and the SERVICE indicator light + Message come on.
Disconnect the 2 black connectors from the EPAS computer.
Check the condition and conformity of the connectors and their clips.
Check the conformity of the electrical supplies (they must be equal to the battery voltage).
In the event of a fault, check the insulation, continuity and the absence of interference resistance on the
following connections:
8-track connector track 8 + 12 V after ignition
2-track connector track 1 + 12 V before ignition feed
2-track connector track 2 Earth
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_DF002/DAE_V09_DF002/DAE_V0D_DF002
POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-16V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF020
PRESENT
OR
STOREDCOMPUTER SUPPLY VOLTAGE
1.DEF: Voltage too low
2.DEF: Voltage too high
CO: Open circuit
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is considered present when the engine is running.
Notes:
This fault causes a degraded assistance (no warning light or message) until assistance
is lost (below 9 V or above 17 V) with STOP warning light + 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 code 135 of the PR143
Check the conditioning and positioning of the EPAS supply fuses:
–Power fuse (80A BP81) in the engine fuse box.
–AP44 after ignition fuse (5A) in the Protection and Switching Unit.
Check the condition and tightness of the battery and alternator terminals, as well as the Protection and Switching
Unit bolt.
Carry out fault finding on the charge circuit.
Repair if necessary.
Disconnect the two black connectors from the EPAS computer.
Check the condition and conformity of the connectors and their clips.
Check the conformity of the electrical supplies (they must be equal to the battery voltage).
In the event of a fault, check the insulation, continuity and the absence of interference resistance on the
following connections:
8-track connector track 8 + 12 V after ignition
2-track connector track 1 + 12 V before ignition feed
2-track connector track 2 Earth
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_DF020/DAE_V09_DF020/DAE_V0D_DF020
POWER-ASSISTED STEERING
Fault finding – Interpretation of faults
36B
36B-19V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF023
PRESENT
OR
STORED+ AFTER IGNITION FEED
1.DEF: Abnormal voltage
NOTESNotes:
When this fault appears, the assistance gradually cut outs within 5 minutes.
Next time the ignition is switched on, this fault causes the absence of steering
assistance.
Check the power supply fuse for the EPAS:
–AP44 after ignition fuse (5A) in the Protection and Switching Unit.
Check the tightness and the condition of the battery terminals.
Repair if necessary.
Disconnect the 8-track connector of the EPAS computer.
Check the condition and conformity of the connector and its clips.
Check the conformity of the 12 V after ignition feed, with the ignition on and engine running (it must be equal
to the battery voltage).
In the event of a fault, check the insulation, continuity and the absence of interference resistance on the
following connection:
8-track connector track 8 + 12 V after ignition
Repair if necessary.
If the connections are OK but the EPAS computer electrical supply is not correct, run fault finding on the charge
circuit.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF023/DAE_V09_DF023/DAE_V0D_DF023
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-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-26V5 MR-372-J84-36B000$462_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
DF055
PRESENT
OR
STOREDCOMPUTER MEMORY
DEF: EEPROM irregularity
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 leads to degraded assistance with no warning light or message or an
assistance that is limited to 10% with the SERVICE indicator light + Message.
–Risk of ESP fault.
–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 83 and 85 of PR143.
Only for Vdiag 05 and 09:
Check status ET020 Steering wheel angle programming which should be STATUS 4; if not, program the
steering wheel angle sensor VP004 Steering wheel angle programming (see Configuration and
programming).
If the fault is still present after the ignition has been switched on several times, contact the Techline.
Procedure to apply for internal fault codes 84 and 86 of PR143.
Contact Techline.
AFTER REPAIRClear the stored faults.
Check that the EPAS is working.
Deal with any other faults.
DAE_V05_DF055/DAE_V09_DF055/DAE_V0D_DF055
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-29V5 MR-372-J84-36B000$528_fra.mif
EPAS
Vdiag no.: 05, 09,
0D
Sub-function: assistance
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
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.
PR121:Steering wheel angle- 10 d˚ < X < 10 d˚In the event of a fault,
apply the interpretation
of parameter PR121.
PR007:Steering wheel angle
drift compensation- 10 d˚ < X < 10 d˚In the event of a fault,
apply the interpretation
of parameter PR007.
TorquePR001:Torque applied to the
steering wheel0 Nm (+ 0.2 Nm)In the event of a fault,
apply the interpretation
of parameter PR001.
PR006:Steering motor torque
setpoint0 Nm (+ 0.2 Nm)In the event of a fault,
apply the interpretation
of parameter PR006.
AssistancePR014:Level of assistance
available100% (but assistance
unavailable)In the event of a fault,
apply the interpretation
of parameter PR014.
ComputerET026:Computer calibrationConfig. 1 < X < Config. 5In the event of a fault,
apply the interpretation
of status ET026.