85A-5
MR-413-X44-85A000$100_eng.mif
V1
WIPERS - WASHERS
Fault finding - Introduction85A
4. FAULT FINDING PROCEDURE (CONTINUED)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring harness may temporarily remove the cause of a fault.
Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not
present when the analysis is made (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Tactile inspection
While manipulating the wiring harness, use the diagnostic tool to note any change in fault status from stored to
present.
Make sure that the connectors are properly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on
the insulating section).
Make sure that the clips and tabs are properly locked in the sockets.
Check that no clips or tabs have been dislodged during connection.
Check the clip contact pressure using an appropriate model of tab.
Resistance check
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or to another wire.
If a fault is detected, repair or replace the wiring harness.
85A-15
MR-413-X44-85A000$700_eng.mif
V1
85A
WIPERS - WASHERS
Fault finding - Conformity check
SUB-FUNCTION: WIPING CONTROL
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and
NotesFault finding
UCH
(see 87B,
passenger
compartment
connection
unit)1
Wiper
controlET077:Wiper stalk
positionINACTIVE
INTERMITTENT
LOW-SPEED
HIGH SPEEDIn the event of a fault, apply
the interpretation of status
ET077 (see 87B, UCH).
2ET096:Wiper
intermittent
speed ring
position1
2
3
4
5In the event of a fault, apply
the interpretation of status
ET096 (see 87B, UCH).
3ET114:Windscreen
wiper request
by rain sensorABSENT
LOW-SPEED
HIGH SPEEDIn the event of a fault, apply
the interpretation of status
ET114 (see 87B, UCH).
4
Windscreen
wiper park
positionET078:Windscreen
washer
requestACTIVE
INACTIVEIn the event of a fault, apply
the interpretation of status
ET078 (see 87B, UCH).
5ET027:Windscreen
wiper park
positionACTIVE
INACTIVEIn the event of a fault, apply
the interpretation of status
ET027 (see 87B, UCH).
6
Rear screen
wiper park
positionET079:Rear screen
washer
requestACTIVE
INACTIVEIn the event of a fault, apply
the interpretation of status
ET079 (see 87B, UCH).
7ET097:Rear screen
wiper park
positionACTIVE
INACTIVEIn the event of a fault, apply
the interpretation of fault
ET097 "Windscreen wiper
park position" (see 87B,
UCH).
8ET080:Rear screen
wiper requestACTIVE
INACTIVEIn the event of a fault, apply
the interpretation of status
ET080
9Reverse
gearET109:Reverse gear
engagedYES
NOIn the event of a fault, apply
the interpretation of status
ET109 (see 87B, UCH).
MR-413-X44-85A000$700_eng.mif
