Mitsubishi 380. Manual — part 73
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
. 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.
16DB438A
HARNESS SIDE
CONNECTOR: F-06
16DB435A
CONNECTOR: C-25
16DB435A
CONNECTOR: C-25
16DB438A
HARNESS SIDE
CONNECTOR: F-06
SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)
54B-290
INSPECTION PROCEDURE H-7: Headlamp and Taillamp: One of the headlamps does not illuminate.
.
TECHNICAL DESCRIPTION (COMMENT)
If one of the headlamps does not illuminate, a
headlamp bulb may be defective.
.
TROUBLESHOOTING HINTS
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
• The headlamp bulb may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
.
AC305977AE
CONNECTOR: A-11X
16DB434A
A-20
CONNECTOR: A-20
16DB433A
A-32
CONNECTORS: A-32
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
."
High beam only (both RH and LH) : Refer to Inspection
Procedure H-3 "The headlamps (high-beam) do not
illuminate normally
."
High beam indicator lamp : Refer to Inspection Procedure
H-8 "The high-beam indicator lamp does not
illuminate
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
. 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.
16DB434A
A-20
CONNECTOR: A-20
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
. Check that the headlamps illuminate
normally.
16DB434A
A-20
CONNECTOR: A-20
16DB436A
CONNECTOR A-20
(HARNESS SIDE)
16DB434A
A-20
CONNECTOR: A-20
16DB433A
A-32
CONNECTORS: A-32
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