low beam 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.

GENERAL DESCRIPTION
SIMPLIFIED WIRING SYSTEM (SWS)54B-6
FOG LAMP
.
FOG LAMP
The fog lamps will illuminate only when the fog lamp
switch is operated while the low-beam headlamps
are on.
The fog lamps will be switched off when any of the
following conditions is met. The fog lamps will also
be switched off automatically by headlamp automatic
shutdown function.
When the high-beam headlamps are switched
on, the fog lamps will be switched off. If the
low-beam headlamps are switched on again, the
fog lamps will illuminate again.
When the headlamp switch is turned off while the
tail lamps are on or the tail lamps and headlamps
are off, the fog lamps will be switched off. If the
low-beam headlamps are switched on again, the
fog lamps will not illuminate again.
.
FOG LAMP INDICATOR
At the same time that the fog lamps are illuminated,
the ETACS-ECU sends a signal to illuminate the fog
lamp indicator via the CAN bus line. The combination
meter receives the transmitted signal and turns the
fog lamp indicator on and off.
INTERIOR LAMP
ETACS-ECU makes it possible to force operation of
all ON and OFF lamp switches in the overhead con-
sole (the dome lamp, reading lamp, cargo area lamp,
rear personal lamps, front door lamps, and front foot
lamps). This function is assigned higher priority than
the controls for the interior lamp switch that are per-
formed when the doors are in certain positions.
When the lamps are forced on, the illumination
level is 100% as all interior lamps are switched on
(the dome lamp, reading lamp, cargo area lamp,
rear personal lamps, front door lamps, and front
foot lamps). Even when all lamps are forced on,
the interior lamp automatic shutoff function is
active.
When the lamps are forced off, all interior lamps
are immediately switched off (the dome lamp,
reading lamp, cargo area lamp, rear personal
lamps, front door lamps, and front foot lamps).When the interior lamp switch is at DOOR position,
the ETACS-ECU controls the interior lamps as fol-
lows:
When a door is opened with the ignition switch
off, the interior lamps up to a luminance of 100
percent. When a door is closed, the interior lamps
dims a luminance of 65 percent, and goes off 30
seconds later. However, if the ignition switch is
turned ON or if a door is locked while the interior
lamps is dimming, the dome lamp will go off at
that point.
When a door is opened with the ignition switch
ON, the interior lamps up at a luminance of 100
percent. When all doors are closed, the interior
lamps go off.
When the ignition key is removed with all doors
closed, the interior lamps up at a luminance of
100 percent, and goes off 30 seconds later. How-
ever, if the ignition key is inserted again or if a
door is locked while the interior lamps is lighting,
the interior lamps will go off at that point.
To check keyless entry operations more easily,
the interior lamps will flash twice when doors are
locked. When doors are unlocked, the interior
lamps up at a luminance of 100 percent, and
goes off 15 seconds later.
INTERIOR LAMP AUTOMATIC
SHUTDOUN FUNCTION
Illuminated interior lamps such as the front dome
lamp, etc. (all lamps using the dome lamp fuse as the
power supply) will automatically go off in the follow-
ing conditions to prevent the battery from discharging
as a result of forgetting to turn off the lamps or
incomplete closing of the door.
When the ignition switch is turned off and more
than 30 minutes pass by with the interior lamp
illuminated, the interior lamps will go off automati-
cally.
When the ignition switch is turned off and one of
the door switches remains open for 30 minutes
continuously, the interior lamps will go off auto-
matically.

SWS DIAGNOSIS
SIMPLIFIED WIRING SYSTEM (SWS)54B-18
Front-ECU, P/W, S/R
NOTE: For item No.70, the diagnostic tool
MB991958 (MUT-III Sub Assembly) also displays
"NG" under "ECU COMM Check" when it displays
"NO ACK" under the front-ECU check.NOTE: For item No.72, the diagnostic tool
MB991958 (MUT-III Sub Assembly) also displays
"NG" under "ECU COMM Check" when it displays
"NO ACK" under the sunroof-ECU check.

The table below shows the service data and their
normal condition, which are displayed during the
"Function Diag." The column "Normal condition"
shows values that are shown when each operation is
made.
.
CHECK
ITEMITEM NO. DISPLAY ON
DIAGNOSTIC
TOOLCHECK CONDITION NORMAL
CONDITION
Response by
the
front-ECU70 FRONT ECU
ACKLighting switch: Other than OFF (excluding
when high-beam is on) or the wiper switch
is at position other than OFF (ignition
switch: ACC or ON)NORMAL ACK
Ignition switch: Other than ON
Lighting switch: OFF
Wiper switch: OFFSLEEP ACK
Lighting switch: HEAD
Headlights: at high beamHI-BEAM ACK
Other than the condition above NO ACK
Response by
the
sunroof-ECU72 S/R ECU ACK
1. Door switch: OFF
2. Ignition switch: ON
OFF
3. While sunroof is offNORMAL ACK

SLEEP ACK (after
approximately 30
seconds)
1. Ignition switch: ON or START
2. One of the sunroof switches is onINPUT CHECK to
NORMAL ACK
Other than the above conditions NO ACK

SWS DIAGNOSIS
SIMPLIFIED WIRING SYSTEM (SWS)54B-19
WIPER
ITEM ITEM NO. INPUT SIGNAL DISPLAY ON
DIAGNOSTIC TOOLNORMAL CONDITION
F.WIPER HI 05 Windshield
intermittent wiper
switchINT WIPER SW (COLUMN
ECU)OFF
06 Windshield
low-speed wiper
switchLO WIPER SW (COLUMN
ECU)OFF
07 Windshield
high-speed wiper
switchHI WIPER SW (COLUMN
ECU)ON
08 Windshield mist
wiper switchMIST WIPER SW
(COLUMN ECU)OFF
09 Windshield washer
switchFRONT WASH.SW
(COLUMN ECU)OFF
31 Ignition switch
(ACC)IG SW (ACC) (ETACS ECU) ON
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK or HI-BEAM
ACK
F.WIPER INT 05 Windshield
intermittent wiper
switchINT WIPER SW (COLUMN
ECU)ON
06 Windshield
low-speed wiper
switchLO WIPER SW (COLUMN
ECU)OFF
07 Windshield
high-speed wiper
switchHI WIPER SW (COLUMN
ECU)OFF
08 Windshield mist
wiper switchMIST WIPER SW
(COLUMN ECU)OFF
09 Windshield washer
switchFRONT WASH.SW
(COLUMN ECU)OFF
31 Ignition switch
(ACC)IG SW (ACC) (ETACS ECU) ON
37 Windshield
intermittent wiper
intervalINT WIPE TIME (ETACS
ECU)The diagnostic tool
MB991958 (MUT-III Sub
Assembly) displays
intermittent wiper interval in
response to the intermittent
wiper control positions.
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK or HI-BEAM
ACK

SWS DIAGNOSIS
SIMPLIFIED WIRING SYSTEM (SWS)54B-20
.
F.WIPER LO 05 Windshield
intermittent wiper
switchINT WIPER SW (COLUMN
ECU)OFF
06 Windshield
low-speed wiper
switchLO WIPER SW (COLUMN
ECU)ON
07 Windshield
high-speed wiper
switchHI WIPER SW (COLUMN
ECU)OFF
08 Windshield mist
wiper switchMIST WIPER SW
(COLUMN ECU)OFF
09 Windshield washer
switchFRONT WASH.SW
(COLUMN ECU)OFF
31 Ignition switch
(ACC)IG SW (ACC) (ETACS ECU) ON
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK or HI-BEAM
ACK
F.WIPER MIST 05 Windshield
intermittent wiper
switchINT WIPER SW (COLUMN
ECU)OFF
06 Windshield
low-speed wiper
switchLO WIPER SW (COLUMN
ECU)OFF
07 Windshield
high-speed wiper
switchHI WIPER SW (COLUMN
ECU)OFF
08 Windshield mist
wiper switchMIST WIPER SW
(COLUMN ECU)ON
09 Windshield washer
switchFRONT WASH.SW
(COLUMN ECU)OFF
31 Ignition switch
(ACC)IG SW (ACC) (ETACS ECU) ON
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK or HI-BEAM
ACK
F. W I P E R
WASH08 Windshield mist
wiper switchMIST WIPER SW
(COLUMN ECU)OFF
09 Windshield washer
switchFRONT WASH.SW
(COLUMN ECU)ON
31 Ignition switch
(ACC)IG SW (ACC) (ETACS ECU) ON
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK or HI-BEAM
ACK ITEM ITEM NO. INPUT SIGNAL DISPLAY ON
DIAGNOSTIC TOOLNORMAL CONDITION

SWS DIAGNOSIS
SIMPLIFIED WIRING SYSTEM (SWS)54B-22
NOTE: When checking the input signals (off, tail,
low-beam or high-beam), turn the ignition switch to
the "ON" position in order to disable the headlamp
automatic shutoff function. However, since the
headlamp operation does not depend on the ignition
switch positions, the diagnostic tool MB991958
(MUT-III Sub Assembly) does not display the title "IGNITION SWITCH". HEADLAMP
LO00 Headlight switch
HEADLAMP SW (COLUMN
ECU)ON
03 Passing lamp
switchPASSING SW (COLUMN
ECU)OFF
30 Ignition switch
(IG1)IG SW (IG1) (ETACS ECU) ON or OFF
35 Headlight
automatic shutoff
functionH/L AUTO-CUT (ETACS
ECU)OFF
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK
PASSING
LAMP03 Passing lamp
switchPASSING SW (COLUMN
ECU)ON
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK or HI-BEAM
ACK
F.FOG LAMP 00 Headlight switch
HEADLAMP SW (COLUMN
ECU)ON
36 Front fog lamp
switchF.FOG LAMP (COLUMN
ECU)ON
35 Headlight
automatic shutoff
functionH/L AUTO-CUT (ETACS
ECU)OFF
30 Ignition switch
(IG1)IG SW (IG1) (ETACS ECU) ON or OFF
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK or HI-BEAM
ACK
TAIL LAMP 00 Headlight switch
HEADLAMP SW (COLUMN
ECU)OFF
01 Tail lamp switch TAILLAMP SW (COLUMN
ECU)ON
03 Passing lamp
switchPASSING SW (COLUMN
ECU)OFF
30 Ignition switch
(IG1)IG SW (IG1) (ETACS ECU) ON or OFF
35 Headlight
automatic shutoff
functionH/L AUTO-CUT (ETACS
ECU)OFF
70 Response by the
front-ECUFRONT ECU ACK (FRONT
ECU)NORMAL ACK ITEM ITEM NO. INPUT SIGNAL DISPLAY ON
DIAGNOSTIC TOOLNORMAL CONDITION

SYMPTOM CHART
SIMPLIFIED WIRING SYSTEM (SWS)54B-59
Headlamp and
taillampGeneral description concerning the headlamp and
taillampP.54B-257
The taillights do not illuminate normally. H-1
P.54B-260
The headlamps (low-beam) do not illuminate
normally.H-2
P.54B-264
The headlamps (high-beam) do not illuminate
normally.H-3
P.54B-268
When the passing switch is turned "ON," the
headlamps (low-beam or high-beam) do not
illuminate.H-4
P.54B-271
Headlights do not illuminate when the lighting
switch is at "TAIL," and "PASSING" position, but
illuminate at low-beam when the switch is at
"HEAD" position. At this position, the headlamps
cannot be changed to high beam by operating the
dimmer switch.H-5
P.54B-273
The taillamps, the position lamps, front parking
lamps or the license plate lamp do not illuminate.H-6
P.54B-275
One of the headlamps does not illuminate. H-7
P.54B-290
The high-beam indicator lamp does not illuminate. H-8
P.54B-301
Headlamp automatic shutoff function does not
work normally.H-9
P.54B-305
Headlamp dimmer switch automatic resetting
function does not work normally.H-10
P.54B-308
Flasher timer General description concerning the flasher timer
P.54B-309
Turn-signal lamps do not flash when the
turn-signal lamp switch is turned on.I-1
P.54B-310
Hazard warning lamps do not flash when the
hazard warning lamp switch is turned on.I-2
P.54B-314
One of the turn-signal lamps does not illuminate. I-3
P.54B-316
The turn-signal lamp indicator does not illuminate
normally.I-4
P.54B-335
Fog lamp General description concerning the fog lamps
P.54B-339
Fog lamps do not illuminate when the fog lamp
switch is turned on.J-1
P.54B-340
Fog lamps do not go out when the headlamps
(low-beam) are turned off while the fog lamps are
on.J-2
P.54B-345
One of the fog lamps does not illuminate. J-3
P.54B-345
The fog lamp indicator does not illuminate
normally.J-4
P.54B-350 SYSTEM SYMPTOM INSPECTION
PROCEDUREREFERENCE
PA G E

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-229
STEP 2. Check the input signal by using "FUNCTION
DIAG." menu of the SWS monitor.
Check the input signals from the following switches:
Ignition switch: ACC
Windshield wiper switch: INT
(1) Operate the MUT-III according to the procedure below to
display "F.WIPER INT."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "Function Diag."
f. Select "WIPER."
g . S e l e c t " F. W I P E R I N T. "
(2) Check that normal conditions are displayed for the items
described in the table below.
Q: Are normal conditions displayed for "INT WIPER SW"
and "FRONT ECU ACK"?
Normal conditions displayed for all the items : Go to
St e p 3 .
Normal condition is not displayed for the "INT WIPER
SW" : Replace the column switch. Verify that the windshield
wiper works normally.
Normal condition is not displayed for the "FRONT ECU
ACK" : Replace the front-ECU. Verify that the windshield
wiper works normally.
STEP 3. Check windshield wiper motor connector A-03 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is windshield wiper motor connector A-03 in good
condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. Verify that the windshield wiper works
normally. ITEM NO. ITEM NAME NORMAL
CONDITION
ITEM 05 INT WIPER SW ON
ITEM 70 FRONT ECU ACK NORMAL ACK or
HI-BEAM ACK

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-253
STEP 3. Check the input signal by using "FUNCTION
DIAG." menu of the SWS monitor.
Check the input signals from the following switches:
Ignition switch: ACC
Windshield washer switch: ON
(1) Operate the Diagnostic Tool MB991958 according to the
procedure below to display "F.WIPER WASH."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "Function Diag."
f. Select "WIPER."
g. Select "F.WIPER WASH."
(2) Check that normal conditions are displayed for the items
described in the table below.
Q: Are normal conditions displayed for "FRONT
WASH.SW" and "FRONT ECU ACK"?
Normal conditions displayed for all the items : Go to
St e p 4 .
Normal condition is not displayed for the "FRONT
WASH.SW" : Replace the column switch. Verify that the
windshield washer works normally.
Normal condition is not displayed for the "FRONT ECU
ACK" : Replace the front-ECU. Verify that the windshield
washer works normally.
STEP 4. Check windshield washer motor connector A-29
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is windshield washer motor connector A-29 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. Verify that the windshield washer works
normally. ITEM NO. ITEM NAME NORMAL
CONDITION
ITEM 09 FRONT WASH.SW ON
ITEM 70 FRONT ECU ACK NORMAL ACK or
HI-BEAM ACK

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-257
HEADLAMP AND TAILLAMP
GENERAL DESCRIPTION CONCERNING THE HEADLAMPS AND TAILLAMPSM1549021300264
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80The following ECUs affect the functions and control
of the headlamps and the taillamps.
FUNCTION CONTROL ECU
Taillamps Front-ECU, column switch
Headlamps ETACS-ECU, front-ECU, column switch
High-beam indicator lamp ETACS-ECU, column switch
Headlamp automatic-shutoff function ETACS-ECU, front-ECU, column switch
Dimmer automatic reset function Front-ECU, column switch