87G - 54
ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart (ALP)
87G
V6 MR-372-J84-87G000$924_eng.mif
UPC
Vdiag No.: 44ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart (ALP)
ALP 1 No dialogue with the computer
NOTESTest the multiplex network.
Check the voltage of the battery.
Check the condition and connection of the battery terminals and power fuses.
Repair if necessary.
Check for the presence of earth on track 3 of connector PPH2.
If necessary, repair the defective connection and/or connector.
Check for the presence of +12 V battery on connector P2.
If necessary, repair the defective connection and/or connector.
Check the condition and connection of connector PEH.
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.
MR-372-J84-87G000$924_eng.mif
87G - 55
ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart (ALP)
87G
V6 MR-372-J84-87G000$924_eng.mif
UPC
Vdiag No.: 44
ALP 2 The starter does not work
NOTESCheck for any faults in the multiplex network by running the network test.
Refer to the Starting function to check that the starting conditions are met.
Check that status ET010 Conditions for starting the engine satisfied is YES after a
press of the start button, if not refer to the relevant status interpretation procedure.
Check:
–the condition and connection of fuse F3.
Replace it if necessary.
Check the starter cabling (terminal tightness, continuity).
Check the condition and connection of starter power supply fuse.
Replace it if necessary.
Check the condition and connection of connector PPM1 in the Protection and Switching Unit and the control
terminal on the starter motor.
Repair if necessary.
If everything is correct, check, by running the starter, for a +12 V supply on the control terminal on the starter.
If correct, carry out a fault finding procedure on the starter.
Check that the insulation against earth and continuity of the connection:
UPC connector PPM1 track 3 The control terminal on the starter.
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.
87G - 56
ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart (ALP)
87G
V6 MR-372-J84-87G000$924_eng.mif
UPC
Vdiag No.: 44
ALP 3 Various passenger compartment functions do not light up
NOTESThe side lights must not be faulty, if they are, refer to the interpretation of command
AC003 Side lights.
Check the condition and connection of the faulty function(s).
Repair if necessary.
Check for the presence of earth on the defective function(s).
Repair if necessary.
With the side lights on, check for the presence of a +12 V supply on the defective function or functions.
If it is in order, replace the defective component.
Check the insulation against earth and continuity between the defective function and the UPC:
Cigar lighters, air conditioning control panel, radio,
multifunction display, rear view mirror controls, front
and rear window riser commands and window riser
locking, door locking switch, instrument panel
command and in-situ control of headlights command.Track 6 of connector PPH2 on the UPC
Heated seat switches, rigid roof switches, petrol or
LPG selector switch, electronic stability program
switch, simultaneous window control, automatic
gearbox display and speed limiter / cruise control
commands.Track 7 connector PPH2 of the UPC
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.
