Mitsubishi Galant 9G. Manual — part 102
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-404
INSPECTION PROCEDURE J-2: Fog Light: Fog lights do not go out when the headlights (low-beam)
are turned off while the fog lights are on.
.
TECHNICAL DESCRIPTION (COMMENT)
If the trouble above occurs, the front-ECU may be
defective.
.
TROUBLESHOOTING HINT
The front-ECU may be defective
DIAGNOSIS
Replace the front-ECU.
The fog lights should go out when the headlights (low-beam)
are turned off while the fog lights are on.
INSPECTION PROCEDURE J-3: Fog Light: One of the fog lights does not illuminate.
BATTERY
FOG
LIGHT
(RH)
FOG
LIGHT
(LH)
FRONT-ECU
RELAY
BOX
FOG LIGHT
RELAY
Fog Light Circuit
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-405
.
TECHNICAL DESCRIPTION (COMMENT)
If one of the fog lights does not illuminate, the fog
light relay or the fog light bulb may be defective. If
the fog light indicator light does not illuminate, the
combination meter may be defective.
.
TROUBLESHOOTING HINTS
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
• The fog light bulb may be defective
.
DIAGNOSIS
Required Special Tool:
• MB991223: Harness Set
STEP 1. Verify that the fog lights and the fog light indicator
light illuminate.
Q: Do the fog lights and the fog light indicator light
illuminate normally?
Only the fog light (LH) does not illuminate : Go to Step 2.
Only the fog light (RH) does not illuminate : Go to Step
Only the fog light indicator does not illuminate : Refer to
Inspection Procedure J-4 "The fog light indicator does
not illuminate normally
Both of the fog lights do not illuminate : Refer to
Inspection Procedure J-1 "Fog lights do not illuminate
when the fog light switch is turned on
."
AC305979
CONNECTOR: A-05X
AC
AC305210AB
CONNECTOR: A-22
A-22 (B)
AC305206
CONNECTOTR: A-28
AB
A-28 (B)
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-406
STEP 2. Check fog light (LH) connector A-22 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is fog light (LH) connector A-22 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Check that the fog lights illuminate normally.
STEP 3. Check the fog light bulb (LH).
(1) Remove the fog light bulb (LH).
(2) Verify that the fog light bulb (LH) is not damaged or burned
out.
Q: Is the fog light bulb (LH) in good condition?
YES : Go to Step 4.
NO : Replace the fog light bulb (LH). Verify that the fog
lights illuminate normally.
STEP 4. Check the ground circuit to the fog light (LH).
Measure the resistance at fog light (LH) connector A-22.
(1) Disconnect fog light (LH) connector A-22 and measure the
resistance available at the wiring harness side of the
connector.
(2) Measure the resistance value between terminal 2 and
ground.
• The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 6.
NO : Go to Step 5.
AC400526
A-22 (B)
HARNESS SIDE
AC
CONNECTOR: A-22
AC400526
A-22 (B)
HARNESS SIDE
AC
CONNECTOR: A-22
AC209364FZ
CONNECTOR A-22
(HARNESS SIDE)
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-407
STEP 5. Check the wiring harness between fog light (LH)
connector A-22 (terminal 2) and ground.
Q: Is the wiring harness between fog light (LH) connector
A-22 (terminal 2) and ground in good condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the fog lights illuminate normally.
STEP 6. Check fog light relay connector A-05X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is fog light relay connector A-05X in good condition?
YES : Go to Step 7.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Check that the fog lights illuminate normally.
STEP 7. Check the wiring harness between fog light relay
connector A-05X (terminal 4) and fog light (LH) connector
A-22 (terminal 1).
Q: Is the wiring harness between fog light relay connector
A-05X (terminal 4) and fog light (LH) connector A-22
(terminal 1) in good condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the fog lights illuminate normally.
AC400526
A-22 (B)
HARNESS SIDE
AC
CONNECTOR: A-22
AC305979 AB
CONNECTOR: A-05X
RELAY BOX SIDE
FRONT OF VEHICLE
AC305979 AB
CONNECTOR: A-05X
RELAY BOX SIDE
FRONT OF VEHICLE
AC400526
A-22 (B)
HARNESS SIDE
AC
CONNECTOR: A-22
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