air condition MITSUBISHI 380 2005 Workshop Manual

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-284
STEP 18. Check front combination lamp (LH) connector
A-20 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is front combination lamp (LH) connector A-20 in good
condition?
YES : Go to Step 19.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the front park lamp (LH)
illuminates normally.
STEP 19. Check the front park lamp bulb (LH).
(1) Remove the front park lamp bulb (LH).
(2) Verify that the front park lamp bulb (LH) is not damaged or
burned out.
Q: Is the front park lamp bulb (LH) in good condition?
YES : Go to Step 20.
NO : Replace the front park lamp bulb (LH). Verify that the
front park lamp (LH) illuminates normally.
STEP 20. Check the ground circuit to the front parking
lamp (LH). Measure the resistance at front combination
lamp (LH) connector A-20.
(1) Disconnect front combination lamp (LH) connector A-20
and measure the resistance available at the wiring harness
side of the connector.
(2) Measure the resistance value between terminal 5 and
ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 22.
NO : Go to Step 21.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-285
STEP 21. Check the wiring harness between front
combination lamp (LH) connector A-20 (terminal 5) and
ground.
Q: Is the wiring harness between front combination lamp
(LH) connector A-20 (terminal 5) and ground in good
condition?
YES : Replace the front combination lamp socket (LH).
Verify that the front parking lamp (LH) 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 front park lamp (LH) illuminates normally.
STEP 22. Check the wiring harness between front
combination lamp (LH) connector A-20 (terminal 2) and
front-ECU connector A-11X (terminal 4).
Q: Is the wiring harness between front combination lamp
(LH) connector A-20 (terminal 2) and front-ECU
connector A-11X (terminal 4) 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 front park lamp (LH) illuminates normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-286
STEP 23. Check front combination lamp (RH) connector
A-32 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is front combination lamp (RH) connector A-32 in good
condition?
YES : Go to Step 24.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the front park lamp (RH)
illuminates normally.
STEP 24. Check the front parklamp bulb (RH).
(1) Remove the front park lamp bulb (RH).
(2) Verify that the front park lamp bulb (RH) is not damaged or
burned out.
Q: Is the front park lamp bulb (RH) in good condition?
YES : Go to Step 25.
NO : Replace the front park lamp bulb (RH). Verify that the
front park lamp (RH) illuminates normally.
STEP 25. Check the ground circuit to the front parking
lamp (RH). Measure the resistance at front combination
lamp (RH) connector A-32.
(1) Disconnect front combination lamp (RH) connector A-32,
and measure the resistance available at the harness side of
the connector.
(2) Measure the resistance value between terminal 5 and
ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 27.
NO : Go to Step 26.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-287
STEP 26. Check the wiring harness between front
combination lamp (RH) connector A-32 (terminal 5) and
ground.
Q: Is the wiring harness between front combination lamp
(RH) connector A-32 (terminal 5) and ground in good
condition?
YES : Replace the front combination lamp socket (RH).
Verify that the front park lamp (RH) 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 front park lamp (RH) illuminates normally.
STEP 27. Check the wiring harness between front
combination lamp (RH) connector A-32 (terminal 2) and
front-ECU connector A-11X (terminal 4).
Q: Is the wiring harness between front combination lamp
(RH) connector A-32 (terminal 2) and front-ECU
connector A-11X (terminal 4) 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 front parking lamp (RH) illuminates normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-288
STEP 28. Check licence plate lamp connector F-06 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is licence plate lamp connector F-06 in good condition?
YES : Go to Step 29.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the licence plate lamps
illuminate normally.
STEP 29. Check the licence plate lamp bulbs.
(1) Remove the licence plate lamp bulbs.
(2) Verify that both licence plate lamp bulbs are not damaged
or burned out.
Q: Are both licence plate lamp bulbs in good condition?
YES : Go to Step 30.
NO : Replace the licence plate lamp bulbs. Verify that the
licence plate lamps illuminate normally.
STEP 30. Check the ground circuit to the licence plate
lamp. Measure the resistance at licence plate lamp
connector F-06.
(1) Disconnect licence plate lamp connector F-06 and measure
the resistance available at the wiring harness side of the
connector.
(2) Measure the resistance value between terminal 1 and
ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 32.
NO : Go to Step 31.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-289
STEP 31. Check the wiring harness between licence plate
lamp connector F-06 (terminal 1) and ground.
Q: Is the wiring harness between licence plate lamp
connector F-06 (terminal 1) and ground in good
condition?
YES : Replace the licence plate lamp socket. Verify that the
licence plate 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 licence plate lamps illuminate normally.
STEP 32. Check intermediate connector C-25 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is intermediate connector C-25 in good condition?
YES : Go to Step 33.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the licence plate lamps illuminate
normally.
STEP 33. Check the wiring harness between licence plate
lamp connector F-06 (terminal 2) and intermediate
connector C-25 (terminal 10).
Q: Is the wiring harness between licence plate lamp
connector F-06 (terminal 2) and intermediate connector
C-25 (terminal 10) in good condition?
YES : Replace the licence plate lamp socket. Verify that the
licence plate 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 licence plate lamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-291
DIAGNOSIS
Required Special Tool:
MB991223: Harness Set
STEP 1. Check the headlamp operation.
Q: Which of the headlamps does not illuminate?
LH (low beam) : Go to Step 2.
RH (low beam) : Go to Step 6.
LH (only low-beam) : Go to Step 10.
RH (only low-beam) : Go to Step 13.
LH (only high beam) : Go to Step 16.
RH (only high beam) : Go to Step 21.
Low beam only (both RH and LH) : Refer to Inspection
Procedure H-2 "The headlamps (low-beam) do not
illuminate normally P.54B-264."
High beam only (both RH and LH) : Refer to Inspection
Procedure H-3 "The headlamps (high-beam) do not
illuminate normally P.54B-268."
High beam indicator lamp : Refer to Inspection Procedure
H-8 "The high-beam indicator lamp does not
illuminate P.54B-301."
STEP 2. Check headlamp (LH) connector A-20 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is headlamp (LH) connector A-20 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 headlamps illuminate
normally.
STEP 3. Check headlamp (LH) bulb.
(1) Remove the headlamp (LH) bulb.
(2) Verify that the headlamp (LH) bulb is not damaged or
burned out.
Q: Is headlamp (LH) bulb normal?
YES : Go to Step 4.
NO : Replace the headlamp (LH) bulb. Verify that the
headlamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-292
STEP 4. Check the ground circuit to the front Headlamp
(LH). Measure the resistance at front combination lamp
(LH) connector A-20.
(1) Disconnect front combination lamp (LH) connector A-20
and measure the resistance available at the wiring harness
side of the connector.
(2) Measure the resistance value between terminal (5) and
ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 10.
NO : Go to Step 5.
STEP 5. Check the wiring harness between headlamp (LH)
connector A-20 (terminal 5) and ground.
Q: Is the wiring harness between headlamp (LH) connector
A-20 (terminal 5) 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 headlamps illuminate normally.
STEP 6. Check headlamp (RH) connector A-32 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is headlamp (RH) connector A-32 in good condition?
YES : Go to Step 6.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the headlamps illuminate
normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-293
STEP 7. Check the headlamp (RH) bulb.
(1) Remove the headlamp (RH) bulb.
(2) Verify that the headlamp (RH) bulb is not damaged or
burned out.
Q: Is headlamp (RH) bulb normal?
YES : Go to Step 8.
NO : Replace the headlamp (RH) bulb. Verify that the
headlamps illuminate normally.
STEP 8. Check the ground circuit to the front Headlamp
(RH). Measure the resistance at front combination lamp
(RH) connector A-32.
(1) Disconnect front combination lamp (RH) connector A-32
and measure the resistance available at the wiring harness
side of the connector.
(2) Measure the resistance value between terminal (5) and
ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to step 13.
NO : Go to Step 9.
STEP 9. Check the wiring harness between headlamp (RH)
connector A-32 (terminal 5) and ground.
Q: Is the wiring harness between headlamp (RH) connector
A-32 (terminal 5) 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 headlamps illuminate normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-294
STEP 10. Check headlamp (LH) connector A-20 and
front-ECU connector A-11X for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are headlamp (LH) connector A-20 and front-ECU
connector A-11X in good condition?
YES : Go to Step 11.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the headlamps illuminate
normally.
STEP 11. Check headlamp (LH) bulb.
(1) Remove the headlamp (LH) bulb.
(2) Verify that the headlamp (LH) bulb is not damaged or
burned out.
Q: Is headlamp (LH) bulb normal?
YES : Go to Step 12.
NO : Replace the headlamp (LH) bulb. Verify that the
headlamps illuminate normally.