bulb MITSUBISHI 380 2005 Workshop Manual

GENERAL DESCRIPTION
SIMPLIFIED WIRING SYSTEM (SWS)54B-5
INTERMITTENT CONTROL
ETACS-ECU uses the dial position of the variable
intermittent wiper control switch and the vehicle
speed signal sent by the combination meter to calcu-
late the interval to be sent to the front-ECU. The
front-ECU determines the intermittent time from the
input SWS data signal, and turns ON the windshield
wiper drive signal. When the wiper is at the STOP
position, the windshield wiper auto-stop signal goes
OFF to turn OFF the windshield wiper drive signal.
After the intermittent time from when the windshield
wiper drive signal turned ON, the windshield wiper
drive signal is turned ON again and the above opera-
tion is repeated.
.
MIST WIPER CONTROL
When the ignition switch is in the ACC or ON posi-
tion, and the windshield mist wiper switch of the col-
umn switch is turned ON, the front-ECU turns ON the
windshield wiper drive signal. At the same time, the
wiper speed switching relay is turned ON
(HIGH-SPEED). While the windshield mist wiper
switch is ON, the windshield wiper will operate at
high speed. Then, if the windshield mist wiper switch
is turned off, the wiper operates at low speed until it
stops at the predetermined park position.
When the windshield mist switch is turned on briefly,
the wiper operates once at low speed.
At the point the windshield mist switch is turned ON,
if the windshield wiper has been operating intermit-
tently, the same operations as the above will be per-
formed while the windshield mist wiper switch is ON.
After the windshield mist wiper switch goes OFF, the
intermittent operations will be set again after the
windshield wiper auto-stop signal last is turned ON.
.
WASHER CONTROL
When the ignition switch is in the ACC or ON posi-
tion, and the windshield washer switch of the column
switch is turned ON, the front-ECU turns ON the
windshield washer relay. The windshield wiper drive
signal is turned ON in 0.15 seconds until 2 seconds
after the windshield washer switch goes OFF to
operate the windshield wiper continuously. When the
windshield washer switch is turned ON, if the wind-
shield wiper is operating intermittently, intermittent
operations will be continued after continuous opera-
tions.
HEADLAMP
.
HEADLAMP AUTOMATIC SHUTDOWN
FUNCTION
Even if the lighting switch (tail lamp switch or
headlamp switch) is ON, the headlamps and tail
lamps will automatically go off in the following condi-
tions to prevent the battery from discharging:
When the ignition key is turned from "ON" to "LOCK"
(OFF) or "ACC" position with the lighting switch
turned ON, and this state continues for three min-
utes, the lamp will automatically be turned off. If the
driver's seat door is opened during these three min-
utes, the lamp will go off one second later.
.
HIGH-BEAM INDICATOR
At the same time that the high beams are illumi-
nated, the ETACS-ECU sends a signal to illuminate
the high-beam indicator via the CAN bus line. The
combination meter receives the transmitted signal
and turns the high-beam indicator on and off.
FLASHER TIMER
.
TURN-SIGNAL LAMP
The turn-signal lamp output (flashing signal) is
turned ON when the ignition switch is ON and the
turn-signal lamp switch is ON (LH or RH). If the front
turn-signal lamp or rear turn-signal lamp bulb has
burned out, the flashing speed increases to indicate
that the bulb has burned out.
.
HAZARD WARNING LAMP
Detects the signal where the hazard warning lamp
switch input changes from OFF to ON, and reverse
the flashing state according to this signal. The haz-
ard warning lamps toggle on and off whenever the
hazard warning lamp switch is operated.
.
TURN-SIGNAL INDICATORS
At the same time that the turn-signal lamps are illu-
minated, the ETACS-ECU sends a signal to illumi-
nate the turn-signal lamp indicator via the CAN bus
line. The combination meter receives the transmitted
signal and turns the turn-signal lamp indicator on and
off.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-275
INSPECTION PROCEDURE H-6: Headlamp and Taillamp: The front park lamps, taillamps or the
licence plate lamps do not illuminate.
.
TECHNICAL DESCRIPTION (COMMENT)
If the front park lamps, taillamps or the licence plate
lamp do not illuminate, their bulb may be defective.
.
TROUBLESHOOTING HINTS
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
The front park lamp bulb may be defective
The stop/taillamp bulb may be defective
The licence plate 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
.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-279
STEP 7. Check the wiring harness between intermediate
connector C-25 (terminal 10) and rear combination lamp
(LH) connector F-09 (terminal 4).
NOTE: Check intermediate connector C-25 for loose, corroded,
or damaged terminals, or terminals pushed back in the connec-
tor. If intermediate connector C-25 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 intermediate connector
C-25 (terminal 10) and rear combination lamp (LH)
connector F-09 (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. The taillamp
(LH) and the licence plate lamp should illuminate
normally.
STEP 8. Check rear combination lamp (LH) connector F-09
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is rear combination lamp (LH) connector F-09 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 taillamp (LH) illuminates
normally.
STEP 9. Check the stop/taillamp bulb (LH).
(1) Remove the stop/taillamp bulb (LH).
(2) Verify that the stop/taillamp bulb (LH) is not damaged or
burned out.
Q: Is the stop/taillamp bulb (LH) in good condition?
YES : Go to Step 10.
NO : Replace the stop/taillamp bulb (LH). Verify that the
taillamp (LH) illuminates normally.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-281
STEP 12. Check rear combination lamp (RH) connector
F-03 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is rear combination lamp (RH) connector F-03 in good
condition?
YES : Go to Step 14.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Check that the taillamp (RH) illuminates
normally.
STEP 13. Check the stop/taillamp bulb (RH).
(1) Remove the stop/taillamp bulb (RH).
(2) Verify that the stop/taillamp bulb (RH) is not damaged or
burned out.
Q: Is the stop/taillamp bulb (RH) in good condition?
YES : Go to Step 14.
NO : Replace the stop/taillamp bulb (RH). Verify that the
taillamp (RH) illuminates normally.
STEP 14. Check the ground circuit to the rear combination
lamp (RH). Measure the resistance at rear combination
lamp (RH) connector F-03.
(1) Disconnect rear lamp (RH) connector F-03 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 17.
NO : Go to Step 16.

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-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-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-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-90
Refer to configuration diagrams GROUP-80
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
.

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-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.