air condition MITSUBISHI 380 2005 Workshop Manual

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-342
STEP 3. 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 4.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the fog lamps illuminate normally.
STEP 4. Check the fog lamp relay.
Q: Is the fog lamp relay in good condition?
YES : Go to Step 5.
NO : Replace the fog lamp relay. Verify that the fog lamps
illuminate normally.
BATTERY VOLTAGE TESTER
CONNECTIONSPECIFIED
CONDITION
Not applied 1
4 Open circuit
Connect terminal 2
to the positive
battery terminal
Connect terminal 3
to the negative
battery terminal1
4 Less than 2 ohms

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-343
STEP 5. Check the battery power supply circuit to the fog
lamp relay. Measure the voltage at fog lamp relay
connector A-05X.
The top and bottom of the fog lamp relay are difficult to
identify. Prior to inspection, confirm the triangle mark on
the relay box.
(1) Disconnect fog lamp relay connector A-05X and measure
the voltage available at the relay box side of the connector.
(2) Measure the voltage between terminal 1 and ground, and
also between terminal 2 and ground.
The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 7.
NO : Go to Step 6.
STEP 6. Check the wiring harness between fog lamp relay
connector A-05X (terminals 1 and 2) and the battery.
Q: Is the wiring harness between fog lamp relay connector
A-05X (terminals 1 and 2) and the battery 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.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-344
STEP 7. Check front-ECU connector A-11X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is front-ECU connector A-11X in good condition?
YES : Go to Step 8.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the fog lamps illuminate normally.
STEP 8. Check the wiring harness between fog lamp relay
connector A-05X (terminal 3) and front-ECU connector
A-11X (terminal 11).
Q: Is the wiring harness between fog lamp relay connector
A-05X (terminal 3) and front-ECU connector A-11X
(terminal 11) in good condition?
YES : Go to Step 9.
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 9. Replace the ECU.
(1) Replace the front-ECU.
(2) The fog lamps should illuminate normally.
Q: Do the fog lamps illuminate normally?
YES : No action is necessary and testing is complete.
NO : Replace the ETACS-ECU. Verify that the fog lamps
illuminate normally.

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
2.
Only the fog lamp (RH) does not illuminate : Go to Step
8.
Only the fog lamp indicator does not illuminate : Refer
to Inspection Procedure J-4 "The fog lamp indicator
does not illuminate normally P.54B-350."
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
P.54B-340."
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
P.00E-2. 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.

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
P.00E-2. Check that the fog lamps illuminate
normally.

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
P.00E-2. 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.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-349
STEP 10. Check the ground circuit to the fog lamp (RH).
Measure the resistance at fog lamp (RH) connector A-28.
(1) Disconnect fog lamp (RH) connector A-28 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 12.
NO : Go to Step 11.
STEP 11. Check the wiring harness between fog lamp (RH)
connector A-28 (terminal 2) and ground.
Q: Is the wiring harness between fog lamp (RH) connector
A-28 (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 12. 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 13.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the fog lamps illuminate
normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-350
STEP 13. Check the wiring harness between fog lamp relay
connector A-05X (terminal 4) and fog lamp (RH) connector
A-28 (terminal 1).
Q: Is the wiring harness between fog lamp relay connector
A-05X (terminal 4) and fog lamp (RH) connector A-28
(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.
INSPECTION PROCEDURE J-4: The fog lamp indicator does not illuminate normally.
NOTE: This troubleshooting procedure requires the
use of Diagnostic Tool MB991958 and SWS monitor
kit MB991813. For details on how to use the SWS
monitor, refer to "How to connect SWS monitor
P.54B-13."
.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-364
STEP 4. Check ETACS-ECU connector C-219 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-219 in good condition?
YES : Go to Step 5.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the dome lamp illuminates
normally.
STEP 5. Check the wiring harness between map lamp
assembly connector D-02 (terminal 1)
or overhead console assembly connector D-03 (terminal 1)
and ETACS-ECU connector C-219 (terminal
6).

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-365
NOTE: Also check junction block connector C-205 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-205 is damaged,
repair or replace the damaged component(s) as described in
GROUP 00E, Harness Connector Inspection P.00E-2.
Q: Is the wiring harness between map lamp assembly
connector D-02 (terminal 1) or
overhead console assembly connector D-03 (terminal 1)
and ETACS-ECU connector C-219
(terminal 6) in good condition?
YES : Replace the ETACS-ECU. Verify that the dome lamp
illuminates normally.
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 dome lamp illuminates normally.