2000 MITSUBISHI MONTERO bulb

SWS -TroubleshootingSWS -Troubleshooting54B-34
Inspection Procedure J-1
Ignition key hole illumination lamp: Ignition key hole
illumination lamp does not work normally.Probable cause
The ETACS-ECU operates the ignition keyhole illumination lamp operation,
based on input signals from the following switches:
DIgnition switch (IG1)
DKey reminder switch
DDriver’s door switch
If the ignition key hole illumination lampdoes not work normally, the relevant
input signal circuit, the combination meter or the ETACS-ECU may be defective.DMalfunction of key reminder switch keyless entry system>
DMalfunction of driver’s door switch
DMalfunction of combination meter
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NGCheck the defective input circuit. (Refer to P.54B-15, Defects Found
by Input Signal Check.)
OK
NG
NG
Repair
OK
NG
Repair
NG
NG
Repair
OK
Replace the ETACS-
ECU.
NG
Repair
NG
Check the harness wire between key reminder switch and fusible
link (2).
OK
Check trouble symptoms.
NG
Check the following connectors:
D-202, D-223 , D-27
OK
Check trouble symptoms.
Check the harness wire between key reminder switch and ETACS-
ECU.
OK
Check trouble symptoms.
Check the following connectors:
D-202, D-226
Check the ignition keyhole illumination lamp bulb.Measure at ETACS-ECU connector D-226.
DDisconnect connector and measure at harness side.
DConnect between terminal 36 and body earth.
OK:Ignition key hole illumination lamp illuminate
MUT-
IIinput signal check
DIgnition switch (IG1)
DKey reminder switch
DDriver’s door switch
Inspection Procedure K-1
Headlamp, tail lamp: Tail lamp do not illuminate.Probable cause
The column switch or the front-ECU may be defective.DMalfunction of column switch
DMalfunction of front-ECU
DMalfunction of harness wire or connector
OK
Replace the front-ECU.
Ye sCarry out troubleshooting while referring to the Diagnosis Code
Chart on P.54B-9.
No
NG
Check the taillampswitch input circuit. (Refer to P.54B-49, Inspec-
tion Procedure P-13.)
NG
Repair
NG
Check the harness wire between front-ECU and battery.
OK
Check trouble symptoms.
OK
NG
Check the following connector:
A-07XMeasure at front-ECU connector A-07X.
DDisconnect connector and measure at relay box side.
DVoltage between terminal 5 and body earth.
OK:System voltage
MUT-
IIinput signal check
DTail lampswitch
Is a diagnosis code output when the ignition switch is at the
OFF (LOCK) position?
NOTE
If only one lamp does not illuminate, the harness wire between the lamp and front-ECU may be defective
or the light bulb may be burned out. In this case, check the tail lamp circuit


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SWS -Troubleshooting54B-35
Inspection Procedure K-2
Headlamp, tail lamp: Headlamps (low-beam) do not
illuminate.Probable cause
The column switch or the front-ECU may be defective.DMalfunction of column switch
DMalfunction of front-ECU
DMalfunction of harness wire or connector
OK
Replace the front-ECU.
No
NG
Check theheadlampswitch input circuit. (Refer to P.54B-49, Inspec-
tion Procedure P-13.)
Ye sCarry out troubleshooting while referring to the Diagnosis Code
Chart on P.54B-9.
NG
Repair
NG
Check the harness wire between front-ECU and battery.
OK
Check trouble symptoms.
OK
NG
Check the following connector:
A-07XMeasure at front-ECU connector A-07X.
DDisconnect connector and measure at relay box side.
DVoltage between terminal 3 and body earth.
OK:System voltage
DVoltage between terminal 4 and body earth.
OK:System voltage
MUT-
IIinput signal check
DHeadlamp switch
Is a diagnosis code output when the ignition switch is at the
OFF (LOCK) position?
NOTE
If only one of the headlamps (low-beam) does not illuminate, the harness wire between the headlamp
and front-ECU may be defective or the headlamp bulb may be burned out. In this case, check the headlamp
circuit.
Inspection Procedure K-3
Headlamp, tail lamp: Headlamps (high-beam) do not
illuminate.Probable cause
The column switch or the front-ECU is suspected to be defective.DMalfunction of column switch
DMalfunction of front-ECU
DMalfunction of harness wire or connector
OK
Replace the front-ECU.
Is the headlamps (low-beam) operated normally?NoCheck theheadlamp (low-beam)circuit. (Refer to P.54B-35, Inspec-
tion Procedure K-2.)
Ye s
MUT-
IIinput signal check
DDimmer switchNGCheck the dimmer switch input circuit. (Refer to P.54B-49, Inspection
Procedure P-13.)
NOTE
If only one of the headlamps (high-beam) does not illuminate, the harness wire between the headlamp
and front-ECU may be defective or the headlamp bulb may be burned out. In this case, check the headlamp
circuit.


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SWS -Troubleshooting54B-38
No
NG
OK
Replace the ETACS-
ECU.
NG
Check the defective input
circuit. (P.54B-15, De-
fects Found by Input Sig-
nal Check.)
NG
Repair
NG
Check the harness wire between ETACS-ECU and battery.
OK
NG
Repair
OK
Replace the ETACS-ECU.
NG
Check the harness wire between ETACS-ECU and turn-signal
lamps.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
D-224, D-213, D-210, D-218 , D-219 drive vehicles>
OK
Check trouble symptoms.
Check the following connectors:
D-224, D-223, D-27Measure at ETACS-ECU connector D-224.
DDisconnect connector and measure at J/B side.
DVoltage between terminal 11 and body earth.
OK:System voltage.
Is the hazard warninglamp operated normally?Ye sMUT-
IIinput signal check
DIgnition switch (IG1)
DTurn-signal lampswitch
NOTE
If only one of the turn-signal lamp does not flash, the harness wire between the lamp and ETACS-ECU
may be defective or the lamp bulb may be burned out. In this case, check the turn-signal lamp and
hazard warning lamp circuit.
Inspection Procedure L-2
Flasher timer: Hazard warning lamp do not flash when the
hazard warning lamp switch is turned on.Probable cause
The ETACS-ECU makes the turn-signal lamps flash, base on the input signals
from the hazard warninglampswitch.
If the turn-signal lamps do not flash normally, the hazard warninglampswitch
input circuit or the ETACS-ECU may be defective.DMalfunction of hazard warninglampswitch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
OK
Replace the ETACS-ECU.
NoCheck the turn-signallampcircuit. (Refer to P.54B-37, Inspection
Procedure L-1.)
Ye s
NG
Check the ETACS-ECU battery circuit. (Refer to P.54B-53, Inspec-
tion Procedure Q-1.)
OK
NG
Check the hazard warninglampswitch input circuit. (Refer to
P.54B-43, Inspection Procedure P-4.)MUT-
IIinput signal check
DHazard warninglampswitch
Do all of the following functions operate when the ignition key
is at the LOCK (OFF) position?
DLight reminder warning function
DRoom lamp
Is the turn-signal lamp operated normally?


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SWS -TroubleshootingSWS -Troubleshooting54B-39
Inspection Procedure M-1
Front fog lamp: Front fog lamps do not illuminate when the
front fog lamp switch is turned on.Probable cause
If the tail lamps and headlamps illuminate normally, the front fog lampswitch, the
front fog lamprelay, the front-ECU or the ETACS-ECU may be defective.DMalfunction of front fog lampswitch
DMalfunction of front fog lamprelay
DMalfunction of front-ECU
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
OK
Replace the front-ECU.Check trouble symptoms.
NGCheck the defective circuit. (Refer to P.54B-13, Trouble Symptom
Chart.)
OK
NG
Check the front foglampswitch input circuit. (Refer to P.54B-44,
Inspection Procedure P-5.)
OK
NG
NG
Repair
NG
Check the harness wire between front foglamprelay and battery.
OK
NG
Repair
NG
Check the harness wire between front foglamprelay and front-ECU,
front fog lamprelay and front fog lamps.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
A-09X, A-07X, A-15, A-26, A-22, A-33
OK
Check trouble symptoms.
Check the following connector:
A-09XMeasure at front fog lamprelay connector A-09X.
DDisconnect connector and measure at relay box side.
DVoltage between terminal 3 and body earth.
OK:System voltage
DVoltage between terminal 4 and body earth.
OK:System voltage
OK
Check the front foglamprelay. (Refer to GROUP 54A – Fog Lamp.)NG
Replace
MUT-
IIinput signal check
DFront fog lampswitch
Is the tail lamps and headlamps operated normally?
NG
Replace the ETACS-ECU.
NOTE
If only one of the front fog lamp or front fog lamp indicator lamp does not illuminate, the harness wire
between the lamp and front fog lamp relay may be defective or the lamp bulb may be burned out. In
this case, check the front fog lamp circuit.
Inspection Procedure M-2
Front fog lamp: Front fog lamp do not go out when the tail
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-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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