bulb MITSUBISHI MONTERO 2000 Service Owner's Manual

SWS -Troubleshooting54B-40
Inspection Procedure N-1
Rear fog lamp: Rear fog lamps do not illuminate when the
rear fog lamp switch is turned on.Probable cause
If the headlamps and rear fog lamps illuminate normally, the rear foglamp
switch, the rear foglamprelay or the ETACS-ECU may be defective.DMalfunction of rear foglampswitch
DMalfunction of rear foglamprelay
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
NoCheck the defective device. (Refer to P.54B-13, Trouble Symptom
Chart.)
Ye s
NG
Check the Rear foglampswitch input circuit. (Refer to P.54B-45,
Inspection Procedure P-6.)
OK
NG
Replace
OK
NG
NG
Repair
NG
Check the harness wire between rearlamprelay and fusible link
(1).
OK
NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
D-212, D-226, D-26, D-124, G-02, G-07
OK
Check trouble symptoms.
Check the following connectors:
D-212, D-210, D-211, D-27Measure at rear foglamprelay connector D-212.
DDisconnect connector and measure at relay box side.
DVoltage between terminal 3 and body earth.
OK:System voltage
DVoltage between terminal 5 and body earth.
OK:System voltage
Check the rear foglamprelay. (Refer to GROUP 54A – Fog Lamp.)
MUT-
IIinput signal check
DRear foglampswitch
Are the headlamps and front fog lamps operated normally?
OK
Replace the ETACS-ECU.
NG
Check the harness wire between rear foglamprelay and ETACS-
ECU, rear foglamprelay and rear combination lamps.NG
Repair
NOTE
If only one of the rear fog lamp or rear fog lamp indicator lamp does not illuminate, the harness wire
between the lamp and rear fog lamp relay may be defective or the lamp bulb may be burned out. In
this case, check the rear fog lamp circuit.
Inspection Procedure N-2
Rear fog lamp: Rear fog lamp do not go out when the
headlamps and front fog lamps are turned off while the fog
lamps are on.Probable cause
If the malfunction above occurs, the ETACS-ECU may be defective.DMalfunction of ETACS-ECU
Replace the ETACS-ECU.


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SWS -Troubleshooting54B-41
Inspection Procedure O-1
Room lamp: Room lamp does not illuminate.Probable cause
If the room lampdoes not illuminate at all, the roomlamp bulb may be burned
out, or the power supply circuit or the ETACS-ECU may be defective.DMalfunction of room lamp
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
Ye s
NG
Repair
NG
No
NG
OK
Replace the room lamp.
NG
Repair
NG
Check the harness wire between roomlamp and fusiblelink (2).
OK
Replace the ETACS-
ECU.
NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
F-07, D-29, D-207, D-223, D-27Measure at room lampconnector F-07.
DDisconnect connector and measure at harness side.
DVoltage between terminal 1 and body earth.
OK:System voltage
Check the harness wire between roomlamp and ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
F-07, D-29, D-207, D-224Does the roomlampturn on when the roomlampswitch is
set to the ON position?
Inspection Procedure O-2
Room lamp: Room lamp dimming function does not work
normally.Probable cause
The ETACS-ECU dims the roomlamp according to the inputsignals from the
following switches:
DIgnition switch (IG1)
DKey reminder switch
DDoor switches
DDriver’s door lock actuator switch
If the room lampdoes not bedimmed normally, the relevant input signalcircuit
or the ETACS-ECU may be defective.DMalfunction of key reminder switch
DMalfunction of driver’s door switch
DMalfunction of door switches
DMalfunction of driver’s door lock actuator switch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NGCheck the ETACS-ECU battery circuit. (Refer to P.54B-53, Inspec-
tion Procedure Q-1.)
OK
NG
Check the defective input circuit. (Refer to P.54B-15, Defects Found
by Input Signal Check.)
OK
Replace the ETACS-ECU.
MUT-
IIinput signal check
DIgnition switch (IG1)
DKey reminder switch
DDoor switches
DDriver’s door lock actuator switch
Do all of the following functions operate when the ignition key
is at the LOCK (OFF) position?
DLight reminder warning function
DCentral door locking system
DHazard warninglamp


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