80D-36
MR-413-X44-80D000$900_eng.mif
V1
LIGHTING
Fault finding - Fault Finding Chart80D
If the vehicle lighting is not controlled by the UCH (no rain/light sensor):
If the vehicle lighting is controlled by the UCH (with rain/light sensor):
ALP 8 No front fog lights
NOTESOnly check this customer complaint after performing a complete check with the
diagnostic tool.
If the fog light control on the horn and lights switch is a one-touch control, check that
the front fog lights are "WITH" by reading configuration LC015 "Front fog lights".
Otherwise use command CF021 "Front fog lights".
Check the operation of status ET111 Front fog lights request and command AC008
Front fog light in the UCH. If there is a malfunction on status ET111 "Front fog
lights request" and command AC008 "Front fog lights", refer to the interpretation
of status ET111 "Front fog lights request" and command AC008 "Front fog
lights".
Carry out a multiplex network test. If the multiplex
network contains faults (see 88B, Multiplexing).
Check the condition of the bulbs and the cleanliness
of their contacts.
Are the bulbs and their contacts in good
condition?
YES
Replace the light concerned.
Check that fuse F13 (10 A) is sound and fitted in the passenger compartment fuse and relay box.
Replace the fuse if necessary.
Check the condition and connection of the light connector concerned (bent, oxidised, broken tabs).
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
NOClean the contacts and replace any bulbs in
poor condition.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP8
80D-38
MR-413-X44-80D000$900_eng.mif
V1
LIGHTING
Fault finding - Fault Finding Chart80D
ALP 8
CONTINUED 2
Front fog lights relay check:
Check the insulation, continuity and the absence of interference resistance on the following connections:
●Connection code 8A between components 231 and 209.
●Connection code BP16 between components 231 and 1016.
●Connection code MAM between components 231 and earth MAM.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check for + 12 V on connections BP59 and BP11 of component 209. Check for earth on connection MAN
(for right-hand drive vehicles) or MAM (for left-hand drive vehicles) of component 209.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check between the horn and lights switch and the passenger compartment fuse and relay box:
Check the insulation, continuity and the absence of interference resistance on the following connections:
●Connection code BP59 between components 209 and 1016.
●Connection code BP11 between components 209 and 1016.
●Connection code MAN or MAM between components 209 and earth MAN or earth MAM (depending on the
driving layout, right- or left hand drive).
Check between the engine relay/fuse box (component 597) and the Passenger compartment fuse and relay
box (component 1016):
●Connection code BP11 between components 597 and 1016.
●Connection code BP13 between components 597 and 1016.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the supplies, the earth and the connections are correct, replace the horn and lights switch.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
