2005 MITSUBISHI 380 sensor

SWS DIAGNOSIS
SIMPLIFIED WIRING SYSTEM (SWS)54B-13
When the SWS communication line is monitored,
you can determine whether the problem lies in the
input or output signal circuit system by checking
whether communication data is correct:
If the switch condition does not meet the service
data display, the input signal is defective.
If the switch condition meets the service data dis-
play, the output signal system is defective.
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80NOTE: In addition to the function-specific diag-
nostic menu, a service data menu is available for
SWS monitor service data to check all items for
each ECU.
6. Check the input signal circuit system
Check the relevant switch, sensor, input
signal-side ECU and their wiring harness and
connector.
7. Check the output signal circuit system
Check an output signal-side ECU, electrical load
components and their wiring harness and
connector.
HOW TO CONNECT SWS MONITORM1549014800706
Required Special Tools:
MB991958: DIAGNOSTIC TOOL (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.)
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
MB991813: SWS Monitor Kit
MB991806: SWS Monitor Cartridge
MB991812: SWS Monitor Harness (For Column-ECU)
MB991822: Probe Harness
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958. Connect the main harness A MB991910 before
connecting the SWS monitor harness (for column-ECU)
MB991812. Be sure to connect SWS monitor cartridge
MB991806 after turning on the V.C.I. MB991924.
1. Ensure that the ignition switch is at the "LOCK" (OFF)
position.
2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824
and the personal computer.
4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-74
INSPECTION PROCEDURE A-3: Communication with the ETACS-ECU is not Possible.
.
CIRCUIT OPERATION
The power supply to the ETACS-ECU is provided
by the battery and the ignition switch (IG1).
If the power supply system from the battery is
defective, the system operates by the power sup-
ply from the ignition switch (IG1).
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
.
TECHNICAL DESCRIPTION (COMMENT)
It is suspected that the power supply circuit to the
ETACS-ECU is defective, or the wiring harness
between the SWS monitor kit and the ETACS-ECU
or their connector(s) is damaged. If the battery power
supply circuit to the ECU (terminal 20 of the ETACS-ECU) is damaged, also check the power
supply circuit from the ignition switch (IG1) (terminal
8 of the ETACS-ECU), and repair if necessary. If the
ground circuit to the ECU (terminal 3 of the
ETACS-ECU) is damaged, also check the ground cir-
cuit to the sensor (terminal 50 of the ETACS-ECU),
and repair if necessary.
.
TROUBLESHOOTING HINTS
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
DIAGNOSIS
Required Special Tools:
MB991223: Harness Set
MB991958: DIAGNOSTIC TOOL (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.)
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-106
INSPECTION PROCEDURE B-4: Tone Alarm: Door ajar Warning Buzzer Function does not Work
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 controls the door-ajar warning tone
alarm, based on the signals from the switches and
sensors below.
Ignition switch (IG1): ON
One of the door switches: ON
Vehicle speed signal: 8 km/h (5 mph) or more
.
TECHNICAL DESCRIPTION (COMMENT)
If the door-ajar warning tone alarm does not work,
connector(s), wiring harness in the CAN bus lines,
the combination meter, the ETACS-ECU or the input
signal circuit 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 combination meter may be defective
The ETACS-ECU may be defective

CHECK AT ECU TERMINAL
SIMPLIFIED WIRING SYSTEM (SWS)54B-481
22 Output to door unlock (for
driver's door)When driver's door lock actuator
is operating (doors unlocked)Battery positive voltage
23, 24
25 Input of door lock key cylinder
switch (UNLOCK) signalDoor lock key cylinder switch:
UNLOCK0 V
26
28
29 Input of rear door lock actuator
(UNLOCK) signalRear door lock actuator:
UNLOCK0 V
30 Input of key reminder switch
signalKey reminder switch: ON (when
ignition key is removed)0 V
31, 32
33 Input of door lock switch (LOCK)
signalDoor lock switch (incorporated in
power window switch): LOCK0 V
34 Input of door lock switch
(UNLOCK) signalDoor lock switch (incorporated in
power window switch): UNLOCK0 V
35 Input from rear door switch (RH) Rear door switch (RH): ON (rear
door (RH) open)0 V
36 Input of driver's door lock
actuator (UNLOCK) signalDriver's door lock actuator:
UNLOCK0 V
37 Input from trunk lid latch
assemblyTrunk lid latch: ON (trunk open) 0 V
38 Ground (for sensor) Always 0 V
39
41
42 Input of door lock key cylinder
switch (LOCK) signalDoor lock key cylinder switch:
LOCK0 V
43 Input of front passenger's door
lock actuator (UNLOCK) signalFront passenger’s door lock
actuator: UNLOCK0 V
44 Output to horn relay When a horn sounds by the
keyless entry horn answerback
function2 V or less
45 Output to data link connector When DTC sets 0
12 V (pulse signal)
When input check signal is
output0
12 V (when input
pulse signal is
fluctuating)
46 Output to trunk lamp When trunk lid latch on. 0 V
47
48 Input of fog lamp switch signal Fog lamp switch: ON 0 V
49 Input of hazard warning lamp
switch signalHazard warning lamp switch: ON
(When the switch is depressed)0 V
50 Ground (for sensor) Always 0 V
51 Key Ring Antenna (+) 0 V 0 V
52 Key Ring Antenna (-) 0 V 0 V
53 SWS communication line Always 0
12 V (pulse signal) TERMINAL
NO.INSPECTION ITEM INSPECTION CONDITION NORMAL VALUE

INSTRUMENT PANEL ASSEMBLY
INTERIOR52A-6
6. RADIO AND CD PLAYER,
ASSEMBLY
7. RADIO, CD PLAYER AND CD
CHANGER ASSEMBLY
8. CONSOLE METER HOOD
11. MULTI-CENTER DISPLAY
ASSEMBLY
12. INSTRUMENT DIGITAL CLOCK
ASSEMBLY
13. CENTER CONSOLE ASSEMBLY
14. INSTURMENT PANEL GARNISH
15. COMBINATION METER
ASSEMBLY
FRONT PILLAR TRIM (REFER TO
P.52A-11.)
16. FRONT SPEAKER GARNISH
17. TWEETER
18. INSTRUMENT PANEL SIDE
COVER
19. INSTRUMETN PANEL SIDE AIR
OUTLET
AIR BAG MODULE ASSEMBLY
(DRIVER’S SIDE) (REFER TO
GROUP 52B, AIR BAG MODULE
AND CLOCK SPRING P.52B-237.)
STEERING WHEEL ASSEMBLY
(REFER TO GROUP 37,
STEERING WHEEL P.37-23.)
20. STEERING COLUMN COVERREMOVAL STEPS (Continued)
<>CLOCK SPRING CONNECTOR
<>COLUMN SWITHC CONNECTOR
CLOCK SPRING AND COLUMN
SWITCH ASSEMBLY (REFER TO
GROUP 37, STEERING SHAFT
P.37-25.)
21. INTERIOR TEMPERATURE
SENSOR (GROUP 55B,
SENSORS 55-160.)
22. INSTRUMENT PANEL FRONT
END GARNISH
23. PHOTO SENSOR (GROUP 55B,
SENSORS 55-160.) AND
SECURITY LED.
FLOOR CONSOLE ASSEMBLY
(REFER TO P.52A-10.)
COWL SIDE TRIM (REFER TO
P.52A-11.)
<>AIR BAG MODULE CONNECTOR
(PASSENGER’S SIDE) (REFER
TO GROUP 52B, AIR BAG
MODULE AND CLOCK SPRING
P.52B-237.)
25. INSTRUMENT PANEL ASSEMBLYREMOVAL STEPS (Continued)

FRONT SEAT ASSEMBLY
INTERIOR52A-32
CIRCUIT DIAGRAMS:
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
NOTE: Check connectors and terminals for damage or
loose connections at the seat harness and all supply
circuits connections to seat. Repair or replace wiring
harness if damaged.
ERASING DIAGNOSTIC TROUBLE CODES (DTC’s)
The Memory Seat Controller will temporarily store DTC’s when
incorrect operating conditions are detected. The DTC’s are
self-clearing as soon as each fault condition is rectified and
returns to normal operating function. LED FLASH
SEQUENCEFAULT CONDITION
DETECTEDPOSSIBLE CAUSE
2 then 1 No fore lift motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 2 No aft lift motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 3 No track motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 4 No pedal motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 5 No recliner motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 6 No lumbar motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
3 then 1 Button stuck MEMORY Button switch cap stuck on
side cover
3 then 2 Manual Button stuck position Button switch cap stuck on
side cover
6 then 3 Power relay welded shut Grime on contact

ENGINE COMPARTMENT
CONFIGURATION DIAGRAMS80-4
ENGINE COMPARTMENTM1801000301403
A-01 (2-B) WHEEL SPEED SENSOR (FRONT:
RH)
A-02 (26-B) ABS-ECU OR ABS/TCL-ECU
A-03 (5-B) WINDSHIELD WIPER MOTOR
A-04 (2-B) WHEEL SPEED SENSOR (FRONT:
LH)
A-05X (4) FOG LAMP RELAY
A-06X (4) HORN RELAY
A-10X (4) FAN CONTROL RELAYA-11X (11) FRONT-ECU
A-12X (11) FRONT-ECU
A-13 (17-GR) FRONT WIRING HARNESS AND
CONTROL WIRING HARNESS
COMBINATION
A-14 (6-GR) GROUNDING CONNECTOR
A-17 (2) SIDE TURN SIGNAL LAMP (LH)
A-18 (2) FRONT TURN SIGNAL LAMP (LH)
A-20 (6) HEADLAMP COMBINATION (LH)

ENGINE COMPARTMENT
CONFIGURATION DIAGRAMS80-5
A-22 (2-B) FOG LAMP (LH)
A-23 (2-Y) FRONT IMPACT SENSOR (LH)
A-24 (3-B) RADIATOR AND CONDENSER FAN
CONTROLLER MODULE
A-25 (2-BR) AMBIENT TEMPERATURE SENSOR
A-26 (2-B) HOOD SECURITY SWITCH
A-27 (2-Y) FRONT IMPACT SENSOR (RH)
A-28 (2-B) FOG LAMP (RH)
A-29 (2) WINDSHIELD WASHER MOTORA-30 (3-B) A/C PRESSURE SENSOR
A-32 (6) HEADLAMP COMBINATION (RH)
A-34 (2) FRONT TURN SIGNAL LAMP (RH)
A-35 (2) SIDE TURN SIGNAL LAMP (RH)
A-36 (1-B) HORN (LOW)
A-37 (1-B) HORN (HIGH)
A-38 (2) CONDENSOR FAN CONNECTION
TO CONTROLLER MODULE