2005 MITSUBISHI 380 bulb

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-359
INSPECTION PROCEDURE K-1: Interior Light: The dome lamp do not illuminate and go out 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."
.
CIRCUIT OPERATION
The ETACS-ECU operates the dome lamp according
to the following signals:
Ignition switch (IG1): ON or OFF
Key reminder switch: ON or OFF
Door switches: ON or OFF
Driver’s door lock actuator switch: ON or OFF
Interior lamp loaded signal: ON
.
TECHNICAL DESCRIPTION (COMMENT)
If the dome lamp does not illuminate normally, a
burned-out dome lamp bulb, the input circuits from
the switches described in "CIRCUIT OPERATION",
the power supply line to the switches or the
ETACS-ECU may be defective.
.
TROUBLESHOOTING HINTS
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
Trouble in input signal system
The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
The ETACS-ECU may be defective

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-367
TECHNICAL DESCRIPTION (COMMENT)
Is the dome lamp does not flash normally, a
burned-out dome lamp bulb, the input circuits from
the switches described in "CIRCUIT OPERATION",
the power supply line to the switches or the
ETACS-ECU may be defective.
.
TROUBLESHOOTING HINTS
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
The front dome lamp bulb may be defective
The rear dome lamp bulb may be defective
The trunk lamp bulb may be defective
The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
The ETACS-ECU may be defective

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-369
STEP 3. Check the wiring harness between map lamp
assembly connector D-02 (terminals 1 and 2) sunroof> or overhead console assembly connector D-03
(terminals 1 and 2) and ETACS-ECU
connector C-219 (terminals 6 and 5).
Q: Is the wiring harness between map lamp assembly
connector D-02 (terminals 1 and 2) or
overhead console assembly connector D-03 (terminals
1 and 2) and ETACS-ECU connector
C-219 (terminals 6 and 5) 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. Check that
the front dome lamp and rear dome lamp illuminates
normally.
STEP 4. Check map lamp assembly connector D-02
or overhead console assembly
connector D-03 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is map lamp assembly connector D-02 sunroof> or overhead console assembly connector
D-03 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. Check that the front dome lamp illuminates
normally.
STEP 5. Check the front dome lamp bulb.
Q: Is the front dome lamp bulb in good condition?
YES : Go to Step 6.
NO : Replace the front dome lamp bulb. Check that the
front dome lamp illuminates normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-371
STEP 8. Check the wiring harness between map lamp
assembly connector D-02 (terminals 1 and 2) sunroof> or overhead console assembly connector D-03
(terminals 1 and 2) and ETACS-ECU
connector C-219 (terminals 6 and 5).
Q: Is the wiring harness between map lamp assembly
connector D-02 (terminals 1 and 2) or
overhead console assembly connector D-03 (terminals
1 and 2) and ETACS-ECU connector
C-219 (terminals 6 and 5) in good condition?
YES : Replace the map lamp assembly
or overhead console assembly . Check
that the front 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. Check that
the front dome lamp illuminates normally.
STEP 9. Check rear dome lamp connector D-07 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is rear dome lamp connector D-07 in good condition?
YES : Go to Step 10.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the rear dome lamp illuminates
normally.
STEP 10. Check the rear dome lamp bulb.
Q: Is the rear dome lamp bulb in good condition?
YES : Go to Step 11.
NO : Replace the rear dome lamp bulb. Check that the rear
dome lamp illuminates normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-374
STEP 15. Check trunk lamp connector D-10, ETACS-ECU
connectors C-218 and C-219 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is trunk lamp connector D-10, ETACS-ECU connectors
C-218 and C-219 in good condition?
YES : Go to Step 16.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the trunk lamp illuminates
normally.
STEP 16. Check the trunk lamp bulb.
Q: Is the trunk lamp bulb in good condition?
YES : Go to Step 17.
NO : Replace the trunk lamp bulb. Check that the trunk
lamp illuminates normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-381
INSPECTION PROCEDURE K-4: Interior Light: The ignition key hole illumination lamp does not
illuminate or go out 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."
.
CIRCUIT OPERATION
When the driver's door is opened with the ignition
switch at "ACC" position, the ETACS-ECU illumi-
nates the ignition key hole illumination lamp.
The ignition key hole illumination lamp goes out
in 30 seconds after the driver's door is closed.
The ignition key hole illumination lamp remains
illuminated for 30 seconds after the ignition key is
pulled out.
The ETACS-ECU operates the ignition key hole
illumination lamp according to the input signals
from the following switches:
Ignition switch (IG1): OFF
Key reminder switch: OFF
Interior lamp loaded signal: ON
Vehicle condition:
Ignition switch: "LOCK" (OFF) or "ACC" posi-
tion
Ignition key: Removed from the ignition key
cylinder
Driver’s door: Opened or closed
.
TECHNICAL DESCRIPTION (COMMENT)
If the ignition key hole illumination lamp does not illu-
minate, the input circuits from the switches described
in "CIRCUIT OPERATION", the key reminder switch
(ignition key hole illumination lamp bulb) or the
ETACS-ECU may be defective.
.
TROUBLESHOOTING HINTS
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
Trouble in input signal system
The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
The ETACS-ECU may be defective

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-386
STEP 5. Check at ETACS-ECU connector C-218 in order to
check the ignition key hole illumination lamp circuit.
(1) Disconnect ETACS-ECU connector C-218, and measure at
the wiring harness side.
(2) The ignition key hole illumination lamp should illuminate
when terminal 63 is grounded.
Q: Does the ignition key hole illumination lamp illuminate?
YES : Replace the ETACS-ECU. Verify that the ignition key
hole illumination lamp illuminates normally.
NO : Go to Step 6.
STEP 6. Check key reminder switch connector C-310 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is key reminder switch connector C-310 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 ignition key hole illumination
lamp illuminates normally.
STEP 7. Check the ignition key hole illumination lamp
bulb.
Q: Is the ignition key hole illumination lamp bulb in good
condition?
YES : Go to Step 8.
NO : Replace the bulb. Verify that the ignition key hole
illumination lamp illuminates normally.