wiring MITSUBISHI TRITON 1997 User Guide

ABS <4WD> ± Troubleshooting35C-7
INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODES
For diagnosis code numbers other than those listed below, refer to GROUP 35B ± Troubleshooting.
Code No. 25 Free wheel engage switch
Probable cause
ABS-ECU determines that an open circuit exists in the free wheel engage switch
system.
Malfunction of wiring harness or connector

Malfunction of 4WD indicator-ECU

Malfunction of ABS-ECU
Does the 4WD indicator lamp operate
normally?No4WD indicator-ECU check. (Refer to
GROUP 22 ± 4WD indicator-ECU.)NGReplace the 4WD indicator-ECU.
Ye s
Measure at ABS-ECU connector C-64.

Disconnect the connector and
measure at the harness side.

Ignition switch ON

Voltage between 45 and body earth
OK:System voltage 2WD> or 0 V NGCheck the following connectors.
C-64 and A-02NG
Repair
OK
Check trouble symptom.NGCheck the harness between free wheel
engage switch and the ABS-ECU, and
repair if necessary.
OK
Check the following connector.
C-64NG
Repair
OK
Check trouble symptom.NGReplace the ABS-ECU.

ABS <4WD> ± Troubleshooting35C-8
Code No. 26 4WD position detection switchProbable cause
This code is output at the following times:
ABS-ECU determines that an open circuit exists in the 4WD detection switch system.
The free wheel engage switch is off and the 4WD detection switch is on at a vehicle
speed of 15km/h or more for 5 seconds or more.
Malfunction of wiring harness or connector

Malfunction of free wheel engage switch

Malfunction of 4WD indicator-ECU

Malfunction of 4WD position detection switch

Malfunction of ABS-ECU
No
OK
Check trouble symptom.NGCheck the harnesses between 4WD
position detection switch and the ABS-
ECU, and repair if necessary.
OKCheck the following connector.
C-64NG
Repair
OK
Check trouble symptom.NGReplace the ABS-ECU.
Ye s
Measure at ABS-ECU connec-
tor C-64.

Disconnect the connector
and measure at the harness
side.

Ignition switch ON

Transfer lever:2H

Voltage between 35 and
body earth
OK:System voltageNGCheck the following connector.
C-64NG
Repair
Does the 4WD indicator lamp operate
normally?
Trouble symptomMain causeRemedy
Even when the transfer shift lever is
in the º4Hº position, the 4WD front
wheel indicator lamp does not
illuminate.Broken harness wire between the 4WD
indicator-ECU and the free-wheel
engage switch, or broken earth wire
from the free wheel engage switchRepair the harness.
Free wheel engage switch is defective.Replace the switch.
Even when the transfer shift lever is
in the º4Hº position, the free wheel
differential indicator lamp does not
illuminate
Broken harness wire between the 4WD
indicator-ECU and the 4WD position
detection switchRepair the harness.
illuminate.Broken wire in the 4WD indicator-ECU
circuit4WD indicator-ECU inspection (Re-
fer to GROUP 22 ± 4WD indicator-
ECU.)
Free wheel differential indicator
lamp illuminates regardless of the
p
osition of the transfer shift lever
Short in the harness wire in the 4WD
position detection switch circuitRepair the harness.
position of the transfer shift lever.4WD position detection switch is
defective.Replace the switch.
Short in the ABS-ECU circuitReplace the ABS-ECU.
Short in the 4WD indicator-ECU circuit4WD indicator-ECU inspection (Re-
fer to GROUP 22 ± 4WD indicator-
ECU.)
No indicator is illuminatedPower circuit in the 4WD indicator-ECU
is defective.Repair the harness.
4WD indicator-ECU is defective.4WD indicator-ECU inspection (Re-
fer to GROUP 22 ± 4WD indicator-
ECU.)
NOTE
When checking a short in the ABS-ECU circuit, remove the ABS-ECU connector and check if the 4WD
indicator returns to normal. If it returns to normal, the ABS-ECU is defective. Furthermore, if the ABS-ECU
is normal, then the 4WD indicator-ECU will be defective.

ABS <4WD> ± Troubleshooting35C-9
Code No. 27 Rear differential lock detection switch
Probable cause
The ABS-ECU determines that an open circuit occurs in rear differential detection
switch system.
Malfunction of wiring harness or connector

Malfunction of rear differential lock-ECU

Malfunction of ABS-ECU
Does the 4WD indicator lamp (rear dif-
ferential lamp) operate normally?NoRear differential lock-ECU check.NGReplace the rear differential lock-ECU.
Ye s
Measure at the ABS-ECU connector
C-64.

Disconnect the connector and
measure at the harness side.

Ignition switch: ON

Rear differential lock switch: OFF

Voltage between 46 and body earth
OK:System voltageNGCheck the following connectors.
C-88, C-86, C-02 and C-64NG
Repair
OK
Check trouble symptom.NGCheck the harness between rear differ-
ential detection switch and the ABS-
ECU, and repair if necessary.
OK
Check the following connector.
C-64NG
Repair
OK
Check trouble symptoms.NGReplace the ABS-ECU.
Code No. 27 Rear differential lock detection switch
Probable cause
For vehicles without rear differential lock, battery positive voltage is applied to the
ABS-ECU terminal No. 46.
This code is output when this line is interrupted.
Malfunction of wiring harness or connector

Malfunction of ABS-ECU
Is the fuse No. 7 normal?NoReplace the fuse after eliminating the
cause of the blowout.
Ye s
Measure at the ABS-ECU connector
C-64.

Disconnect the connector and
measure at the harness side.

Ignition switch ON

Voltage between 46 and body earth
OK:System voltageNGCheck the following connectors.
C-88, C-86, C-02 and C-64NG
Repair
OK
Check trouble symptoms.NGCheck the harness between fuse No.
7 inside the junction block and the ABS-
ECU, and repair if necessary.
OK
Check the following connector.
C-64NG
Repair
OK
Check trouble symptoms.NGReplace the ABS-ECU.

ABS <4WD> ± Troubleshooting35C-10
Code No. 32 G-sensor systemProbable cause
This code is output at the following times:
The G-sensor output is less than 0.5 V or more than 4.5 V.
An open or short circuit is present in the G-sensor system.
Malfunction of G-sensor

Malfunction of wiring harness or connector

Malfunction of ABS-ECU
G-sensor check (Refer to P. 35C-20.)NGReplace the G-sensor.
OK
Measure at ABS-ECU connector C-62.

Ignition switch ON

Voltage between 4 and 17
OK:2.4 ± 2.6 VNGCheck the following connector.
C-02NG
Repair
OK
Check trouble symptom.NGCheck the harness between the G-sen-
sor and the ABS-ECU, and repair if nec-
essary.OK
Check the following connector.
C-62NG
Repair
OK
Check trouble symptom.
NG
Replace the ABS-ECU.
ABS WARNING LAMP INSPECTION35201200086
Refer to GROUP 35B ± Troubleshooting.
INSPECTION CHART FOR TROUBLE SYMPTOMS35201140159
Refer to GROUP 35B ± Troubleshooting.

BODY ± Door42-21
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure 1
The power windows cannot be operated by any of the
power window switches.
Probable cause
The cause may be a malfunction of the power window relay and of the power window
relay drive circuit.
Malfunction of power window relay

Malfunction of wiring harness or connector
Power window relay continuity check.
(Refer to P.42-38.)NG
Replace
OK
Measure at the power window relay con-
nector C-78.

Disconnect the connector and
measure at the harness side.

Voltage between 3 and body earth

Voltage between 4 and body earth
OK:System voltageNGCheck the following connectors:
C-01, C-78, C-88, C-89NG
Repair
OK
Check trouble symptoms.
OK
Measure at the power window relay con-
nector C-78.

Disconnect the connector and
measure at the harness side.

Continuity between 2 and body earth
OK:ContinuityNGCheck the following connector:
C-78NG
Repair
OK
Check trouble symptoms.
OK
Check the following connectors:
C-17, C-39, C-78, D-04, D-16, D-22,
E-03, E-04, E-13, E-15OKCheck trouble symptoms.
NG
RepairNG
Check the harness wire between ignition
switch (IG2) and power window relay,
between fusible link No.4 and power win-
dow relay, and repair if necessary.
NG
Check the harness wire between power
window relay and the earth, and repair
if necessary.
NG
Check the harness wire between power
window relay and power window main
switch, between power window relay
and power window sub-switch, and re-
pair if necessary.

BODY ± Door42-22
Inspection Procedure 2
Driver's side power window cannot be operated by the
power window main switch.
Probable cause
The cause may be a malfunction of the earth circuit in the power window main switch
or of the power supply circuit for the power window motor.
The cause may also be a malfunction of the control circuit inside the power window
main switch.
Malfunction of power window motor

Malfunction of power window main switch

Malfunction of wiring harness or connector
Power window motor (driver's side)
check (Refer to P.42-38.)NG
Replace
OK
Measure at the power window main
switch connector E-03.

Voltage between 1 and body earth
(When main switch is at UP)

Voltage between 5 and body earth
(When main switch is at DOWN)
OK:System voltageNGCheck the following connectors:
E-03, E-11NG
Repair
OK
Check trouble symptoms.
OK
Check the following connectors:
C-39, E-03NG
Repair
OK
Check trouble symptoms.NGCheck the harness wire between power
window main switch and earth.NG
Repair
OK
Replace the power window main switch.NG
Check the harness wire between power
window main switch and power window
motor (driver's side), and repair if neces-
sary.

BODY ± Door42-23
Inspection Procedure 3
Passenger's side and rear power windows cannot be
operated by the power window main switch. (However,
they can be operated by the power window sub-switches.)
Probable cause
The cause may be a malfunction of the power window main switch, or an open circuit
or short-circuit in the communication line.
Malfunction of power window main switch

Malfunction of wiring harness or connector

Measure at the power window main
switch connector E-03 and power win-
dow sub-switch connector E-13.

Disconnect the connector and
measure at the harness side.

Continuity between 2 (main switch
side) and 8 (sub-switch side)
OK:Continuity

Continuity between 2 (main switch
side) and the earth
OK:No continuityNGCheck the following connectors:
C-17, C-39, E-03, E-13NG
Repair
OK
Check the following connectors:
E-03, E-13OKCheck trouble symptoms.
NG
Repair

Measure at the power window main
switch connector E-03 and power win-
dow sub-switch connector E-04
or E-15 .

Disconnect the connector and
measure at the harness side.

Continuity between 2 (main switch
side) and 8 (sub-switch side)
OK:Continuity

Continuity between 2 (main switch
side) and the earth
OK:No continuityNGCheck the following connectors:
C-39, D-16, D-22, E-03, E-04
C-39, D-04, D-22, E-03, E-15NG
Repair
OK
Check trouble symptoms.
OK
Check the following connectors:
E-03, E-04
E-03, E-15OKCheck trouble symptoms.
NG
RepairOK
Check trouble symptoms.NGCheck the harness wire between power
window main switch and power window
sub-switch, and repair if necessary.
NG
Replace the power window main switch. NG
Check the harness wire between power
window main switch and power window
sub-switch, and repair if necessary. NG
Replace the power window main switch.
Inspection Procedure 4
Passenger's side and rear power windows cannot be
operated by the power window sub-switches. (However,
they can be operated by the power window main switch.)
Probable cause
The cause may be a malfunction of the power window sub-switch.
Malfunction of power window sub-switch
Replace the power window sub-switch

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 ± Door42-26
Inspection Procedure 6
When the glass is raised, it then lowers automatically.
Probable cause
If the sliding resistance is too large when the glass is being raised, it is judged that
something is jammed in the window, and the window is lowered by approximately
150 mm.
Incorrect window glass adjustment

Glass slider is incorrectly installed or warped

Malfunction of power window main switch or sub-switch
Does the glass move in the opposite direction when the power
window drive current is above the following value? (Refer to
P.42-30.)
Drive current:
4 ± 7 A
3.5 ± 6.5 AYESAdjust the window glass. (Refer to P.42-29.)
Adjust or replace the power window. (Refer to P.42-29.)
NO
Driver's side: Replace the power window main switch.
Passenger's side: Replace the power window sub-switch.
Inspection Procedure 7
The glass is not lowered when something is jammed in the
window.
Probable cause
The safety mechanism is released under the following conditions, and the window
will not be lowered even if something becomes jammed in it.

If the limit switch is always off

If there is an open circuit in the harness between the limit switch and the power
window main switch or the power window sub-switch

If the limit switch turns off before the set value is reached

If the window is within 12 mm of being fully closed (normal setting to prevent
the window from being lowered)
Malfunction of limit switch

Malfunction of wiring harness

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:
C-39, E-03, E-10
C-17, E-13, E-21
D-16, D-22, E-04, E-08
D-04, D-22, E-15, E-19NG
Repair
OK
Check trouble symptoms.
NG
Check the harness between the limit switch and the power window
main switch and between the limit switch and the power window
sub-switch, and between the limit switch and the earth.OKDriver's side: Replace the power window main switch.
Passenger's side: Replace the power window sub-switch.
NG
Repair

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.