1997 MITSUBISHI TRITON lock

BODY ± Door42-24
Inspection Procedure 5
Passenger's side and rear power windows cannot be
operated by both the power window sub-switches and by
the power window main switch.
Probable cause
One of the following items can be defective:

Power supply circuit of the power window sub-switch

Earth circuit

Power window motor

Lock switch

Power window main switch

Power window sub-switch
Malfunction of power window main switch

Malfunction of power window sub-switch

Malfunction of power window motor

Malfunction of wiring harness or connector

Power window motor (passenger's side)
check (Refer to P.42-38.)NG
Replace
OK
Measure at the power window sub-
switch connector E-13.

Disconnect the connector and
measure at the harness side.

Voltage between 1 and body earth
OK:System voltageNGCheck the following connectors:
C-17, E-13NG
Repair
OK
Check trouble symptoms.
OK
Measure at the power window sub-
switch connector E-13.

Voltage between 3 and body earth
(When main switch is at DOWN)

Voltage between 6 and body earth
(When main switch is at UP)
OK:System voltageNGCheck the following connectors:
C-17, E-13NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between power
window sub-switch and the earth.NG
Repair
OK
Replace the power window sub-switch.
OK
Check the following connectors:
E-13, E-22NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between power
window sub-switch and power window
motor (passenger's side).OKReplace the power window main switch.
NG
RepairNG
Check the harness wire between power
window relay and power window sub-
switch, and repair if necessary.

BODY ± Door42-27
Inspection Procedure 8
When the glass is fully raised, it then lowers
automatically.
Probable cause
When the window is within 12 mm of being fully closed, the limit switch turns off
to prevent the window from being lowered. However, the above problem can occur
if there is a malfunction of the limit switch or a short-circuit in a harness.
Malfunction of limit switch

Malfunction of wiring harness or connector

Malfunction of power window main switch or sub-switch

Incorrect limit switch operation position
Limit switch operation position adjustment (Refer to P.42-39.)
Check trouble symptoms.
NG
Limit switch continuity check (Refer to P.42-39.)NG
Replace
OK
Check the following connectors:
E-03, E-10
E-13, E-21
E-04, E-08
E-15, E-19NG
Repair
OK
Check trouble symptoms.
NG
Check the harness between the limit switch and the power window
main switch or between the limit switch and the power window
sub-switch.OKDriver's side: Replace the power window main switch.
Passenger's side: Replace the power window sub-switch.
NG
Repair
Inspection Procedure 9
None of the door lock functions operate.
Probable cause
The cause may be a malfunction of the ETACS-ECU power supply circuit system
or of the earth circuit system.
Malfunction of ETACS-ECU

Malfunction of wiring harness or connector
Measure at the J/B connector C-81,
C-82.

Remove the ETACS-ECU and
measure at the J/B side.

Voltage between 1 and body earth
(C-82)

Voltage between 6 and body earth
(C-81)
OK:System voltageNGCheck the following connectors:
A-56X, C-81, C-82NG
Repair
OK
Check trouble symptoms.
OK
Check the following connectors:
C-87, C-91NG
Repair
OK
Check trouble symptoms.NGCheck the harness wire between ET-
ACS-ECU and the earth.NG
Repair
OK
Replace the ETACS-ECU.NG
Check the harness wire between fusible
link No.6 and J/B, and repair if neces-
sary.

BODY ± Door42-28
Inspection Procedure 10
None of the doors lock or unlock when the driver's-side
inside door locking knob is operated (including by means
of the door key).
Probable cause
The cause may be a malfunction of the door lock actuator switch, the ETACS-ECU
or of a wiring harness or connector.
Malfunction of front door lock actuator (driver's side)

Malfunction of ETACS-ECU

Malfunction of wiring harness or connector
MUT-II Pulse check
Front door lock actuator switch (driver's-
side) input signal
OK:The MUT-II buzzer sounds once
when the front door lock actuator
moves from the locked to the un-
locked position, or from the un-
locked to the locked position.NGDoor lock actuator check (driver's side).
(Refer to P.42-41.)NG
Replace
OK
Check the following connectors:
C-38, C-90, E-09NG
Repair
OK
Check trouble symptoms.OK
Replace the ETACS-ECU.NG
Check the harness wire between the
front door lock actuator (driver's side)
and ETACS-ECU, between front door
lock actuator and the earth, and repair
if necessary.
Inspection Procedure 11
Some doors do not lock or unlock.
Probable cause
The cause may be a malfunction of the door lock actuator or of a wiring harness
or connector.
Malfunction of door lock actuator

Malfunction of wiring harness or connector
Check the door lock actuator of the door that does not operate.
(Refer to P.42-41, 42.)NG
Replace
OK
Check the following connectors:
C-38, C-90, E-09
C-18, C-90, E-20
C-90, D-15, D-22, E-05
C-90, D-05, D-22, E-16OKCheck trouble symptoms.
NG
Check the harness between the ETACS-ECU and the door lock
actuator of the door that does not operate, and repair if necessary.
NG
Repair

52A-2
INTERIOR
CONTENTS52109000255
SERVICE SPECIFICATIONS 3. . . . . . . . . . . . . . . . .
ADHESIVE 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOL 3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUMENT PANEL* 4. . . . . . . . . . . . . . . . . . . . . .
FLOOR CONSOLE 7. . . . . . . . . . . . . . . . . . . . . . . . . TRIMS 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT SEAT 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR SEAT 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT SEAT BELT 18. . . . . . . . . . . . . . . . . . . . . . .
REAR SEAT BELT 19. . . . . . . . . . . . . . . . . . . . . . . .
WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES
WARNING!
(1) Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal
injury or death to service personnel (from inadvertent firing of the air bag) or to the driver (from rendering the SRS
inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized
MITSUBISHI dealer.
(3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B ± Supplemental
Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS-related
component.
NOTE
The SRS includes the following components: impact sensors, SRS diagnosis unit, SRS warning lamp, air bag module, clock spring
and interconnecting wiring. Other SRS-related components (that may have to be removed/installed in connection with SRS service
or maintenance) are indicated in the table of contents by an asterisk (*).

SRS ± SRS Service Precautions52B-4
Harness
connector
(No. of termi-
nals, colour)SDU terminal No.Destination of harnessCorrective action
2 pins, red1, 2Body wiring harness
Clock springReplace clock spring
±3, 4±±
±5, 6±±
14 pins, red7, 8±±
9Body wiring harness
Diagnosis connectorCorrect or replace each
wiring harness10Body wiring harness
Front wiring harness

Ignition switch (ST)
wiring harness
11Body wiring harness
Junction block (fuse
No.11)
12Body wiring harness
Junction block (fuse
No.10)
13Body wiring harness
Combination meter (SRS
warning lamp)
14±±
15Body wiring harness
Front wiring harness

Front impact sensor (+) (R.H.)Sensor cable* installation
procedures (Refer to
P 52B 39 )16Body wiring harness
Front wiring harness

Front impact sensor (+) (L.H.)P.52B-39.)
17Body wiring harness
Front wiring harness

Front impact sensor (±) (L.H.)
18Body wiring harness
Front wiring harness

Front impact sensor (±) (R.H.)
19, 20Body wiring harness
EarthCorrect or replace each
wiring harness
NOTE
The sensor cable marked with * is available as service part.
7. SRS components should not be subjected to heat over 93
C, so remove the SRS diagnosis unit,
air bag module, clock spring and front impact sensors before drying or baking the vehicle after painting.
8. Whenever you finish servicing the SRS, check warning lamp operation to make sure that the system
functions properly. (Refer to P.52B-16.)
9. Make certain that the ignition switch is OFF when the MUT-II is connected or disconnected.
10. If you have any questions about the SRS, please contact your local distributor.
NOTE
SERIOUS INJURY CAN RESULT FROM UNINTENDED AIR BAG DEPLOYMENT, SO USE ONLY
THE PROCEDURES AND EQUIPMENT SPECIFIED IN THIS MANUAL.

SRS ± Sealant/Troubleshooting52B-6
SEALANT52400060015
ItemSpecified sealantRemark
Sensor cable3M ATD Part No. 8625 or equivalentRibbon sealer
TROUBLESHOOTING52400310097
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 ± How to Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION52400320083
DIAGNOSIS CODES CHECK
Connect the MUT-II to the diagnosis connector (16-pin) under the instrument under cover, then check
diagnosis codes.
(Refer to GROUP 00 ± How to Use Troubleshooting/Inspection Service Points.)
ERASING DIAGNOSIS CODES
Refer to GROUP 00 ± How to Use Troubleshooting/Inspection Service Points.
INSPECTION CHART FOR DIAGNOSIS CODES52400330123
Inspect according to the inspection chart that is appropriate for the malfunction code.
Code No.Diagnosis itemReference page
11, 12, 13Front impact sensor system52B-7
21, 22Air bag module (squib) system52B-8
31, 32SDU capacitor system52B-9
33*Cranking signal system52B-10
34*Connector lock system52B-11
41*IG1 (A) power circuit system52B-11
42*IG1 (B) power circuit system52B-12
43SRS warning lamp drive circuit system
Lamp does not illuminate*52B-13
SRS warning lamp drive circuit system
Lamp does not switch off52B-14
44SRS warning lamp drive circuit system52B-14
45SDU non-volatile memory (EEPROM) and A/D converter system52B-14
NOTE
(1) *: If the vehicle condition returns to normal, the diagnosis code will be automatically erased, and the SRS warning
lamp will return to normal.
(2) If the vehicle has a discharged battery it will store the fault codes 41 or 42. When these diagnosis codes are displayed,
check the battery.

SRS ± Troubleshooting52B-8
Code No. 21 or 22 Air bag module (squib) systemProbable cause
(1) These diagnosis codes are output if there is abnormal resistance between the
input terminals of the air bag module (squib).
The trouble causes for each code No. are as follows. (Refer to chart 1.)
(2) Diagnosis codes 21 and 22 are sometimes generated in combination with
malfunction codes relating to the front impact sensor (code Nos. 11, 12 and 13),
but sometimes only one may be output instead of both being memorized. Because
of this, the front impact sensor should also be inspected at the same time. The
relationships between the codes are as follows. (Refer to chart 2.)
Malfunction of clock spring

Malfunction of wiring harnesses or connectors

Malfunction of air bag module (squib)

Malfunction of SDU
Chart 1
Code No.Trouble Symptom
21
Short in air bag module (squib) or harness short

Short in clock spring

Short in air bag module (squib) or front impact sensor harnesses leading to the power supply
22
Open circuit in air bag module (squib) or open harness

Open circuit in clock spring

Malfunction of connector contact

Short in air bag module (squib) or front impact sensor harnesses leading to the power supply
Chart 2
ItemFront impact sensor
ShortOpen circuit
(1 sensor)Open circuit
(2 sensors)
Air bag module (squib)Short11 or 2112 or 2113 or 21
Open circuit11 or 2212 or 2213 or 22
Caution
Do not attempt to measure the air bag module (squib) circuit resistance. Use of a tester in measuring
the circuit resistance will supply current to the squib, or erroneous deployment due to static electricity
could cause serious injury.

SRS ± SRS Diagnosis Unit (SDU)/Air Bag Module and Clock Spring52B-28
INSPECTION52400220093

Check the SDU and brackets for dents, cracks or
deformation.

Check connector for damage, and terminals for
deformation.
Caution
If a dent, crack, deformation or rust is discovered,
replace the SDU with a new one.
NOTE
For checking of the SDU other than described above,
refer to the section concerning troubleshooting. (Refer
to P.52B-6.)
AIR BAG MODULE AND CLOCK SPRING52400240143
Caution
1. Disconnect the battery (±) terminal and wait
for 60 seconds or more before starting work.
Furthermore, the disconnected battery
terminal should be covered with tape to
insulate it. (Refer to P.52B-3, No.4.)
2. Never attempt to disassemble or repair the
air bag modules or clock spring.
If faulty, replace it.
3. Do not drop the air bag modules or clock
spring or allow contact with water, grease
or oil.
Replace it if a dent, crack, deformation or
rust is detected.4. The air bag modules should be stored on
a flat surface and placed so that the pad
surface is facing upward.
Do not place anything on top of it.
5. Do not expose the air bag modules to
temperatures over 93C.
6. After deployment of an air bag, replace the
clock spring with a new one.
7. Wear gloves and safety glasses when
handling air bags that have already
deployed.
8. An undeployed air bag module should only
be disposed of in accordance with the
procedures (Refer to P.52B-34.)