Mitsubishi 380. Manual — part 87
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-345
INSPECTION PROCEDURE J-2: Fog Light: Fog lamps do not go out when the headlamps (low-beam)
are turned off while the fog lamps are on.
.
TECHNICAL DESCRIPTION (COMMENT)
If the trouble above occurs, the front-ECU may be
defective.
.
TROUBLESHOOTING HINT
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
The front-ECU may be defective
DIAGNOSIS
Replace the front-ECU.
The fog lamps should go out when the headlamps (low-beam)
are turned off while the fog lamps are on.
INSPECTION PROCEDURE J-3: Fog Light: One of the fog lamps does not illuminate.
.
TECHNICAL DESCRIPTION (COMMENT)
If one of the fog lamps does not illuminate, the fog
lamp relay or the fog lamp bulb may be defective. If
the fog lamp indicator lamp does not illuminate, the
combination meter may be defective.
.
TROUBLESHOOTING HINTS
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
• The fog lamp bulb may be defective
.
DIAGNOSIS
Required Special Tool:
• MB991223: Harness Set
AC305979
CONNECTOR: A-05X
AC
16DB450A
CONNECTOR: A-22
A-22 (B)
A-22
16DB451A
CONNECTOTR: A-28
A-28 (B)
A-28
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-346
STEP 1. Verify that the fog lamps and the fog lamp
indicator lamp illuminate.
Q: Do the fog lamps and the fog lamp indicator lamp
illuminate normally?
Only the fog lamp (LH) does not illuminate : Go to Step
Only the fog lamp (RH) does not illuminate : Go to Step
Only the fog lamp indicator does not illuminate : Refer
to Inspection Procedure J-4 "The fog lamp indicator
does not illuminate normally
."
Both of the fog lamps do not illuminate : Refer to
Inspection Procedure J-1 "Fog lamps do not
illuminate when the fog lamp switch is turned on
."
STEP 2. Check fog lamp (LH) connector A-22 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is fog lamp (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 lamps illuminate
normally.
STEP 3. Check the fog lamp bulb (LH).
(1) Remove the fog lamp bulb (LH).
(2) Verify that the fog lamp bulb (LH) is not damaged or burned
out.
Q: Is the fog lamp bulb (LH) in good condition?
YES : Go to Step 4.
NO : Replace the fog lamp bulb (LH). Verify that the fog
lamps illuminate normally.
16DB450A
CONNECTOR: A-22
A-22 (B)
A-22
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-347
STEP 4. Check the ground circuit to the fog lamp (LH).
Measure the resistance at fog lamp (LH) connector A-22.
(1) Disconnect fog lamp (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.
STEP 5. Check the wiring harness between fog lamp (LH)
connector A-22 (terminal 2) and ground.
Q: Is the wiring harness between fog lamp (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 lamps illuminate normally.
STEP 6. Check fog lamp relay connector A-05X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is fog lamp 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 lamps illuminate
normally.
16DB450A
CONNECTOR: A-22
A-22 (B)
A-22
AC209364FZ
CONNECTOR A-22
(HARNESS SIDE)
16DB450A
CONNECTOR: A-22
A-22 (B)
A-22
AC305979 AB
CONNECTOR: A-05X
RELAY BOX SIDE
FRONT OF VEHICLE
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-348
STEP 7. Check the wiring harness between fog lamp relay
connector A-05X (terminal 4) and fog lamp (LH) connector
A-22 (terminal 1).
Q: Is the wiring harness between fog lamp relay connector
A-05X (terminal 4) and fog lamp (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 lamps illuminate normally.
STEP 8. Check fog lamp (RH) connector A-28 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is fog lamp (RH) connector A-28 in good condition?
YES : Go to Step 9.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Check that the fog lamps illuminate
normally.
STEP 9. Check the fog lamp bulb (RH).
(1) Remove the fog lamp bulb (RH).
(2) Verify that the fog lamp bulb (RH) is not damaged or burned
out.
Q: Is the fog lamp bulb (RH) in good condition?
YES : Go to Step 10.
NO : Replace the fog lamp bulb (RH). Verify that the fog
lamps illuminate normally.
AC305979 AB
CONNECTOR: A-05X
RELAY BOX SIDE
FRONT OF VEHICLE
16DB450A
CONNECTOR: A-22
A-22 (B)
A-22
16DB451A
CONNECTOTR: A-28
A-28 (B)
A-28
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