Page 43 of 56

87G - 43
ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands
87G
V6 MR-372-J84-87G000$792_eng.mif
UPC
Vdiag No.: 44
AC005
LOW-SPEED WINDSCREEN WIPER
NOTESCheck:
–the condition and connection of fuse 9.
Replace it if necessary.
Check the condition and connection of connector PPH2 on the UPC.
Repair if necessary.
Check the condition and connection of the front windscreen wiper motor.
Repair if necessary.
Check for the presence of earth on track 1 of the windscreen wiper motor.
Repair if necessary.
Check for the presence of a +12 V supply on track 4 of the windscreen wiper motor while controlled by
command AC005.
If correct, replace the motor.
Check the insulation and continuity of the connection between:
UPC connector PPH2 track 2 Track 4 of the windscreen wiper motor
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any other possible faults.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
Page 44 of 56

87G - 44
ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands
87G
V6 MR-372-J84-87G000$792_eng.mif
UPC
Vdiag No.: 44
AC006
HIGH-SPEED WINDSCREEN WIPER
NOTESCheck:
–the condition and connection of fuse 9
Replace it if necessary.
Check the condition and connection of connector PPH2 on the UPC.
Repair if necessary.
Check the condition and connection of the windscreen wiper motor.
Repair if necessary.
Check for the presence of earth on track 1 of the windscreen wiper motor.
Repair if necessary.
Check for the presence of a +12 V supply on track 5 of the windscreen wiper motor while controlled by AC006.
If correct, replace the motor.
Check the insulation and continuity of the connection between:
UPC connector PPH2 track 1 Track 5 of the windscreen wiper motor
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any other possible faults.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
Page 52 of 56

87G - 52
ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands
87G
V6 MR-372-J84-87G000$792_eng.mif
UPC
Vdiag No.: 44
AC012
WINDSCREEN WIPER PARK POSITION TEST
NOTESCommands AC005 Low-speed windscreen wiper and AC006 High-speed
windscreen wiper must operate for this command to be activated.
If this is not the case, refer to the interpretation of these commands.
This step must be applied if the windscreen wipers do not stop in their initial position.
Check the condition and the connection of connector PEH on the UPC.
Repair if necessary.
Check the condition and the connection of the windscreen wiper motor connector.
Repair if necessary.
Check the insulation and continuity of the connection between:
UPC connector PEH track 6 Track 2 of the wiper motor
Repair if necessary.
Check, using an indicator light placed between track 2 of the windscreen wiper motor + battery, that the lamp
lights up briefly at the end of the wiping cycle.
If not correct, replace the wiper motor.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any other possible faults.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.