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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Purchased from www.WorkshopManuals.co.uk
