2005 MITSUBISHI 380 air condition

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-317
DIAGNOSIS
Required Special Tool:
MB991223: Harness Set
STEP 1. Check the hazard warning lamp.
Q: Which turn-signal lamp does not illuminate?
front turn-signal lamp (LH) : Go to Step 2.
side turn-signal lamp (LH) : Go to Step 8.
front turn-signal lamp (RH) : Go to Step 14.
side turn-signal lamp (RH) : Go to Step 20.
rear combination lamp (LH) : Go to Step 26.
rear combination lamp (RH) : Go to Step 32.
Turn-signal indicators : Refer to Inspection Procedure I-4
"The turn-signal lamp indicator does not illuminate
normally P.54B-335."
LH side only : Refer to Inspection Procedure I-1
"Turn-signal lamps do not flash when the turn-signal
lamp switch is turned on P.54B-310."
RH side only : Refer to Inspection Procedure I-1
"Turn-signal lamps do not flash when the turn-signal
lamp switch is turned on P.54B-310."
Both LH and RH sides : Refer to Inspection Procedure I-2
"Hazard warning lamps do not flash when the hazard
warning lamp switch is turned on P.54B-314."
STEP 2. Check front combination lamp (LH) connector
A-18 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is front combination lamp (LH) connector A-18 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. Verify that the turn-signal lamps illuminate
normally.
STEP 3. Check the front turn-signal lamp bulb (LH).
(1) Remove the front turn-signal (LH) lamp bulb.
(2) Verify that the front turn-signal lamp bulb (LH) is not
damaged or burned out.
Q: Is the front turn-signal (LH) lamp bulb in good
condition?
YES : Go to Step 4.
NO : Replace the front turn-signal (LH) lamp bulb. Verify
that the turn-signal lamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-318
STEP 4. Check the ground circuit to the ETACS-ECU.
Measure the resistance at front combination lamp (LH)
connector A-18.
(1) Disconnect front combination lamp (LH) connector A-18
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 front
combination lamp (LH) connector A-18 (terminal 2) and
ground.
Q: Is the wiring harness between front combination lamp
(LH) connector A-18 (terminal 2) and ground in good
condition?
YES : Replace the front combination lamp socket (LH).
Verify that the turn-signal lamps illuminate 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 turn-signal lamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-319
STEP 6. 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 7.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the turn-signal lamps illuminate
normally.
STEP 7. Check the wiring harness between front
combination lamp (LH) connector A-18 (terminal 1) and
ETACS-ECU connector C-219 (terminal 14).

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-320
NOTE: Also check junction block connector C-214 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-214 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 front combination lamp
(LH) connector A-18 (terminal 1) and ETACS-ECU
connector C-219 (terminal 14) in good condition?
YES : Replace the front combination lamp socket (LH).
Verify that the turn-signal lamps illuminate 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 turn-signal lamps illuminate normally.
STEP 8. Check side turn signal- lamp (LH) connector A-17
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is side turn-signal lamp (LH) connector A-17 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. Verify that the turn-signal lamps illuminate
normally.
STEP 9. Check the side turn-signal lamp bulb (LH).
(1) Remove the side turn-signal (LH) lamp bulb.
(2) Verify that the side turn-signal lamp bulb (LH) is not
damaged or burned out.
Q: Is the side turn-signal (LH) lamp bulb in good
condition?
YES : Go to Step 10.
NO : Replace the side turn-signal (LH) lamp bulb. Verify
that the turn-signal lamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-321
STEP 10. Check the ground circuit to the ETACS-ECU.
Measure the resistance at side turn-signal lamp (LH)
connector A-17.
(1) Disconnect side turn-signal lamp (LH) connector A-17 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 side
turn-signal lamp (LH) connector A-17 (terminal 2) and
ground.
Q: Is the wiring harness between side turn-signal lamp
(LH) connector A-17 (terminal 2) and ground in good
condition?
YES : Replace the side turn-signal lamp socket (LH). Verify
that the turn-signal lamps illuminate 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 turn-signal lamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-322
STEP 12. 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 7.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the turn-signal lamps illuminate
normally.
STEP 13. Check the wiring harness between side
turn-signal lamp (LH) connector A-17 (terminal 1) and
ETACS-ECU connector C-219 (terminal 14).

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-323
NOTE: Also check junction block connector C-214 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-214 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 side turn-signal lamp
(LH) connector A-17 (terminal 1) and ETACS-ECU
connector C-219 (terminal 14) in good condition?
YES : Replace the side turn-signal lamp socket (LH). Verify
that the turn-signal lamps illuminate 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 turn-signal lamps illuminate normally.
STEP 14. Check front combination lamp (RH) connector
A-34 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is front combination lamp (RH) connector A-34 in good
condition?
YES : Go to Step 15.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the turn-signal lamps illuminate
normally.
STEP 15. Check the front turn-signal lamp bulb (RH).
(1) Remove the front turn-signal (RH) lamp bulb.
(2) Verify that the front turn-signal lamp bulb (RH) is not
damaged or burned out.
Q: Is the front turn-signal (RH) lamp bulb in good
condition?
YES : Go to Step 16.
NO : Replace the front turn-signal (RH) lamp bulb. Verify
that the turn-signal lamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-324
STEP 16. Check the ground circuit to the front
combination lamp (RH). Measure the resistance at front
combination lamp (RH) connector A-34.
(1) Disconnect front combination lamp (RH) connector A-34
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 18.
NO : Go to Step 17.
STEP 17. Check the wiring harness between front
combination lamp (RH) connector A-34 (terminal 2) and
ground.
Q: Is the wiring harness between front combination lamp
(RH) connector A-34 (terminal 2) and ground in good
condition?
YES : Replace the front combination lamp socket (RH).
Verify that the turn-signal lamps illuminate 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 turn-signal lamps illuminate normally.