trunk MITSUBISHI 380 2005 Owner's Manual

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-390
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
MB991813: SWS Monitor Kit
MB991806: SWS Monitor Cartridge
MB991812: SWS Monitor Harness (For Column-ECU)
MB991822: Test Probe Harness
STEP 1. Check the interior lamps.
If the interior lamp switch is moved to the "door interlock posi-
tion", the interior lamps should illuminate when either door is
opened.
Q: Do the interior lamp illuminate normally?
All the interior lamps illuminate normally. : Go to Step 2.
None of the interior lamps illuminate normally. : Refer to
Inspection Procedure K-1 "The dome lamp do not
illuminate and go out normally P.54B-359."
Some of the interior lamps do not illuminate normally. :
Refer to Inspection Procedure K-2 "The front dome
lamp, rear dome lamp or trunk lamp do not illuminate
or go out normally P.54B-366."
STEP 2. Check the adjustment function.
Q: Has a setting other than "No auto-shutoff" been
selected for the interior lamp automatic shutdown
function by the adjustment function?
YES : Go to Step 3.
NO : Set the interior lamp automatic shutdown function to
another setting other than "No auto-shutoff".

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-393
STEP 5. Check the input signal (by using the pulse check
mode of the monitor).
Check the following switches and input signals:
Door switches
Interior lamp loaded signal
(1) Operate diagnostic tool MB991958 according to the
procedure below to display "Pulse check."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "Pulse Checking."
(2) Check if diagnostic tool MB991958 sounds or not.
Q: When any door switch, interior lamp or the trunk lid
latch is operated, does diagnostic tool MB991958
sound?
Buzzer of diagnostic tool MB991958 sounds normally. :
Replace the ETACS-ECU. Verify that the dome lamp
illuminates normally.
When one of the doors is opened and closed,
diagnostic tool MB991958 does not sound : Refer to
Inspection Procedure N-3 "ETACS-ECU does not
receive any signal from any of the door switches
P.54B-440."
When one of the interior lamps is illuminated,
diagnostic tool MB991958 does not sound : Refer to
Inspection Procedure N-9 "ETACS-ECU does not
receive any interior lamp loaded signal P.54B-474." ITEM NAME CONDITION
interior lamp loaded
signalTurn on one of the interior lamps
door switch Open or close one of the doors

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-469
INSPECTION PROCEDURE N-7: ETACS-ECU does not receive any signal from the trunk lid latch
assembly.
.
CIRCUIT OPERATION
The ETACS-ECU operates the trunk lamp according
to signal from the trunk lid latch assembly.
.
TECHNICAL DESCRIPTION (COMMENT)
The trunk lid latch assembly input signal is used to
operate the trunk lamp. If the signal fails, this func-
tion will not work normally.
.
TROUBLESHOOTING HINTS
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
The trunk lid latch assembly may be defective
The ETACS-ECU may be defective
The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-470
DIAGNOSIS
.
Required Special Tool:
MB991223: Harness Set
STEP 1. Check trunk lid latch assembly connector F-05 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is trunk lid latch assembly connector F-05 in good
condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
P.00E-2. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
trunk lid latch assembly should be normal.
STEP 2. Check the trunk lid latch assembly.
Remove the trunk lid latch assembly. Refer to GROUP 42,
Trunk lid, Trunk lid latch inspection P.42-65.
Q: Is the trunk lid latch assembly in good condition?
YES : Go to Step 3.
NO : Replace the trunk lid latch assembly. The input signal
from the trunk lid latch assembly should be able to be
checked and the functions, which are described in the
"Technical Description (comment)," should work
normally.
STEP 3. Check ETACS-ECU connector C-217 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-217 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. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the
trunk lid latch assembly should be normal.
LEVER POSITION TESTER
CONNECTIONSPECIFIED
CONDITION
ON (Latch open) 2
Ground Less than 2 ohms
OFF (Latch shut) 2
Ground Open circuit

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-471
STEP 4. Check the wiring harness between trunk lid latch
assembly connector F-05 (terminal 2) and ETACS-ECU
connector C-217 (terminal 37).
NOTE: Also check intermediate connector C-28 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-28 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
Q: Is the wiring harness between trunk lid latch assembly
connector F-05 (terminal 2) and ETACS-ECU connector
C-217 (terminal 37) in good condition?
YES : Replace the ETACS-ECU. If the functions described
in "CIRCUIT OPERATION" work normally, the input
signal from the trunk lid latch assembly should be
normal.
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. If the
functions described in "CIRCUIT OPERATION" work
normally, the input signal from the trunk lid latch
assembly should be normal.

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-472
INSPECTION PROCEDURE N-8: Transmitter (integrated into key): ETACS-ECU does not receive any
signal from the lock, unlock, trunk or panic switch.
Whenever the ECU is replaced, ensure that the input signal
circuit is normal.
.
COMMENTS ON TROUBLE SYMPTOM
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
Input signal from the keyless entry transmitter is used to oper-
ate the keyless entry system. If the signal is abnormal, the key-
less entry system will not work normally.
.
POSSIBLE CAUSES
Malfunction of the ETACS-ECU
Malfunction of the keyless entry transmitter
Defective battery of the keyless entry transmitter
1. Lock switch
2. Unlock switch
3. Trunk switch
4. Panic switch
5. Indicator lamp

INPUT SIGNAL PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-473
DIAGNOSTIC PROCEDURE
Step 1. Pulse check
Check whether the ETACS-ECU receives signal from a trans-
mitter or not. For this check, you should use the 4-button-type
transmitter (integrated with a key), which has already been reg-
istered.
NOTE: For how to register the keyless entry transmitter
encrypted code, refer to GROUP 42
On-vehicle Service
P.42-73.
OK: The MUT-III sounds or the voltmeter needle fluctu-
ates.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Go to Step 4.
Step 2. Check the transmitter battery.
Refer to GROUP 42
Keyless entry system P.42-70.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Replace the keyless entry key integrated transmitter
battery.
Step 3. Register the encrypted code, and then retest the
system.
(1) Register the keyless entry transmitter again.
(2) Check that each signal is received from the keyless entry
transmitter.
Q: Is the check result normal?
YES : The trouble can be an intermittent malfunction (Refer
to GROUP 00
How to Cope with Intermittent
Malfunction P.00-14).
NO : Replace the keyless entry transmitter.
Step 4. Retest the system.
Check that each signal is received from the keyless entry key
integrated transmitter.
Q: Is the check result normal?
YES : The trouble can be an intermittent malfunction (Refer
to GROUP 00
How to Cope with Intermittent
Malfunction P.00-14).
NO : Replace the ETACS-ECU. System switch Check condition
Keyless entry transmitter
"LOCK/UNLOCK" switchWhen the switch is
turned from off to on
Keyless entry transmitter
"Panic" switchWhen the switch is
turned from off to on
Keyless entry transmitter
"Trunk" switchWhen the switch is
turned from off to on

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

TRIMS
INTERIOR52A-11
TRIMS
REMOVAL AND INSTALLATIONM1521001100455
1. FRONT SCUFF PLATE
2. COWL SIDE TRIM
REAR SEAT CUSHION (REFER
TO P.52A-55.)
3. REAR SCUFF PLATE
FRONT SEAT BELT LOWER
ANCHOR BOLT
4. FRONT SEAT BELT SASH GUIDE
COVER
5. FRONT SEAT BELT SHOLDER
ANCHOR BOLT
6. CENTER PILLAR COVER
7. CENTER PILLAR TRIM LOWER
8. FRONT DOOR OPENING TRIM
<>9. FRONT PILLAR TRIM
10. REAR DOOR OPENING TRIM
11. CENTER PILLAR TRIM UPPER
REAR SEATBACK ASSEMBLY
(REFER TO P.52A-55.)
12. REAR PILLAR TRIM
13. CHILD RESTRAINT LID
14. REAR SHELF SPEAKER
GARNISH
15. CHILD RESTRAINT LID
16. SEAT BELT GARNISH
17. REAR SHELF TRIM
18. CHILD RESTRAINT FITTING
19. TRUNK ROOM FLOOR BOARD
20. REAR END TRIM
21. TRUNK TRIM SIDE RH
22. TRUNK TRIM, FRONT
23. TRUNK TRIM SIDE LH
24. PARCEL NET ANCHOR
25. JACK ACCESS PANEL

DASH PANEL
CONFIGURATION DIAGRAMS80-11
C-21 (2) TRUNK OPEN SWITCH
C-24 (6-B) ACCELERATOR PEDAL POSITION
SENSOR
C-25 (16) FRONT WIRING HARNESS AND
FLOOR WIRING HARNESS
COMBINATION
C-26 (14) INSTRUMENT PANEL WIRING
HARNESS AND FRONT DOOR
WIRING HARNESS (LH)
COMBINATION
C-27 (4) INSTRUMENT PANEL WIRING
HARNESS AND ROOF WIRING
HARNESS COMBINATIONC-28 (43) INSTRUMENT PANEL WIRING
HARNESS AND FLOOR WIRING
HARNESS COMBINATION
C-29 (38) INSTRUMENT PANEL WIRING
HARNESS AND FRONT WIRING
HARNESS COMBINATION
C-30 (4) STOPLAMP SWITCH
C-32 (6) MODE SELECT SWITCH