2000 MITSUBISHI MONTERO ECU

SWS -Troubleshooting54B-45
Inspection Procedure P-6
Rear fog lamp switch signal is not sent to the ETACS-ECU.Probable cause
The rear foglampswitch input signal is used to operate the rear fog lamp. If
the signal fails, rear foglampwill not work normally.DMalfunction of fog lampswitch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
Replace
OK
NG
NG
Repair
NG
Check the harness wire between foglampswitch and body earth.
OK
NG
Repair
NG
NG
Repair
OK
Replace the ETACS-ECU.
Check the harness wire between foglampswitch and ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
D-141, D-226
OK
Check trouble symptoms.
Check the following connectors:
D-141, D-30Measure at fog lampswitch connector D-141.
DDisconnect connector and measure at harness side.
DContinuity between terminal 6 and body earth.
OK:Continuity
Check the rear foglampswitch. (Refer to GROUP 54A – Fog
Lamp.)
Inspection Procedure P-7
Back-up lamp switch signal is not sent to the ETACS-ECU.
Probable cause
The back-uplampswitch input signal is used to operate the rear wiper. If the
signal is an error, the rear wiper will not operate consecutively twice when the
rear wiper is on and the shift lever is moved to R position.DMalfunction of back-uplampswitch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
Replace
OK
NG
NG
Repair
NG
Check the harness wire between back-uplampswitch and ignition
switch (IG1).
OK
NG
Repair
NG
NG
Repair
OK
Replace the ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
C-18, E-115, D-32, D-213, D-208
Check the harness wire between back-uplampswitch and ETACS-
ECU.
OK
Check trouble symptoms.
Check the following connectors:
C-18, E-113, D-128 , E-13, D-33 drive vehicles>, D-226
Measure at back-uplampswitch connector C-18.
DDisconnect connector and measure at harness side.
DTurn the ignition switch to ON position.
DVoltage between terminal 2 and body earth.
OK:System voltage
Check the back-uplampswitch.


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SWS -Troubleshooting54B-46
Inspection Procedure P-8
Inhibitor switch (reverse) signal is not sent to the
ETACS-ECU. Probable cause
The inhibitor switch (reverse) input signal is used to operate the rear wiper. If
the signal is an error, the rear wiper will not operate consecutively twice when
the rear wiper is on and the selector lever is moved to R position.DMalfunction of inhibitor switch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
Replace
OK
NG
NG
Repair
NG
Check the harness wire between inhibitor switch and ignition switch
(IG1).
OK
NG
Repair
NG
NG
Repair
OK
Replace the ETACS-ECU.
Check the harness wire between inhibitor switch and ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
C-05, E-113, D-128 , E-13, D-33 drive vehicles>, D-226
OK
Check trouble symptoms.
Check the following connectors:
C-05, E-115, D-32, D-213, D-208Measure at inhibitor switch connector C-05.
DDisconnect connector and measure at harness side.
DTurn the ignition switch to ON position.
DVoltage between terminal 7 and body earth.
OK:System voltage
Check the inhibitor switch. (Refer to GROUP 23 – On-vehicle Ser-
vice.)
Inspection Procedure P-9
Rear wiper motor auto-stop signal is not sent to the
ETACS-ECU.Probable cause
Rear wiper motor auto-stop signal is used to operate the rear wiper. If the signal
is an error, the rear wiper will not stop at the predetermined park position.DMalfunction of rear wiper motor
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
Replace
OK
NG
NG
Repair
NG
Check the harness wire between rear wiper motor and ignition
switch (ACC).
OK
NG
Repair
NG
NG
Repair
OK
Replace the ETACS-ECU.
Check the harness wire between rear wiper motor and ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
L.H. drive vehicles: I-07, G-06, D-124, D-218, D-224
R.H. drive vehicles: I-07, G-06, D-219, D-224
OK
Check trouble symptoms.
Check the following connectors:
L.H. drive vehicles: I-07, G-06, D-124, D-218, D-208
R.H. drive vehicles: I-07, G-06, D-219, D-208Measure at rear wiper motor connector I-07.
DDisconnect connector and measure at harness side.
DTurn the ignition switch to ACC position.
DVoltage between terminal 4 and ground.
OK:System voltage
Check the rear wiper motor. (Refer to GROUP 51 – Rear Wiper
and Washer.)


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SWS -Troubleshooting54B-47
Inspection Procedure P-10
Driver’s door switch signal is not sent to the ETACS-ECU.Probable cause
Door switches signal is not sent to the ETACS-ECU.

The driver’s door switch is used to operate the following functions. If the signal
fails, these devices will not work normally.
DLight reminder warning buzzer function
DForgotten key prevention function
DPower window timer function
DIgnition key hole illumination lamp
DHeadlamp automatic shutdown function

The door switches is used to operate the following devices. If the signal fails,
these devices will not work normally.
DKeyless entry system
DRoom lamp dimming functionDMalfunction of driver’s, front passenger’s, rear or
back door switch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
OK
NG
Repair
OK
NG
Repair
OK
Replace the ETACS-
ECU.
NG
Repair
NG
Check the harness wire between door switch and ETACS-ECU.
OKCheck trouble symptoms.
Check the following connectors :
Front L.H. door: F-20, D-26, D-218, D-224
Front R.H. door: F-03, D-124, D-209, D-224
Rear L.H. door: F-14, D-26, D-218, D-224
Rear R.H. door: F-10, D-124, D-209, D-224
Back door: G-03, D-26, D-218, D-224
Check the following connectors :
Front L.H. door: F-20, D-26, D-209, D-224
Front R.H. door: F-03, D-219, D-224
Rear L.H. door: F-14, D-26, D-209, D-224
Rear R.H. door: F-10, D-219, D-224
Back door: G-03, D-26, D-209, D-224
Check the installation of the door switch to the vehicle body.
Check the door switch. (Refer to GROUP 42 – Door or GROUP
42 - Back Door.)NG
Replace


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SWS -Troubleshooting54B-48
Inspection Procedure P-11
Front passenger’s or back door lock key cylinder switch
signal is not sent to the ETACS-ECU.Probable cause
The front passenger’s and back door lock key cylinder switch input signal is
used to operate the central door locking system. If the signal fails, central door
locking system will not work normally.DMalfunction of front passenger’s or back door lock
key cylinder switch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
Replace
OK
OK
Replace the ETACS-ECU.
OK
NG
NG
Repair
NG
RepairOK
NG
Check the harness wire between door lock key cylinder switch
and body earth.
NG
Check the harness wire between door lock key cylinder switch
and ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
Front passenger’s door: H-17, D-15, D-225
Back door: I-05, G-05, D-124, D-225
Check trouble symptoms.
Check the following connectors:
Front passenger’s door: H-17, D-15
Back door: I-05Measure at door lock key cylinder switch connector H-17 passenger’s door> or I-05 .
DDisconnect connector and measure at harness side
DContinuity between terminal 2 and body earth.
OK:Continuity
Check the door lock key cylinder switch. (Refer to GROUP 42
– Door or GROUP 42 - Back Door.)
Inspection Procedure P-12
Driver’s door lock actuator switch signal is not sent to the
ETACS-ECU.Probable cause
The driver’s door lock actuator switch is used to operate the following systems
or functions. If the signal fails, these systems or function will not work normally.
DCentral door locking system
DForgotten key prevention function
DKeyless entry systemDMalfunction of driver’s door lock actuator
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
OK
Replace the ETACS-ECU.
OK
NG
NG
Repair
NG
Repair
NG
Check the harness wire between driver’s door lock actuator and
body earth.
NG
Check the harness wire between driver’s door lock actuator and
ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
OK
Check the following connectors:
H-03 , H-18 , D-25, D-225
OK
Check trouble symptoms.
Check the following connectors:
H-03 , H-18 , D-25Measure at door lock actuator connector H-03
or H-18 .
DDisconnect connector and measure at harness side
DContinuity between terminal 1 or 3

OK:Continuity
Check the door lock actuator switch. (Refer to GROUP 42 – Door
or Back Door.)NG
Replace


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SWS -Troubleshooting54B-49
Inspection Procedure P-13
Column switch:
D
Tail lamp switch signal is not sent to the ETACS-ECU.
D
Headlamp switch signal is not sent to the ETACS-ECU.
D
Dimmer switch signal is not sent to the ETACS-ECU.
D
Passing switch signal is not sent to the ETACS-ECU.
D
Turn-signal lamp switch signal is not sent to the
ETACS-ECU.
D
Headlamp washer switch is not sent to the ETACS-ECU.
Probable cause
The column switch (lighting switch) is used to operate the following systems or
functions. If the signal fails, these systems or function will not work normally.
DHeadlamp washer
DHeadlamp, tail lamp
DTurn-signal lamp
DFront fog lamp
DRear foglampDMalfunction of column switch
DMalfunction of ETACS-ECU
NG
Replace the ETACS-ECU.
Ye sCarry out troubleshooting while referring to the Diagnosis Code
Chart on P.54B-9.
Check trouble symptoms.
No
Replace the column switch (lighting switch).
OK
Replace the column switch (wiper and washer switch).
No
Check the column switch (lighting switch and switch body). (Refer
to GROUP 54A - Column Switch.)NG
Replace
Is a diagnosis code output when the ignition switch is at the
OFF (LOCK) position?


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SWS -Troubleshooting54B-50
Inspection Procedure P-14
Column switch:
D
Windshield mist wiper switch signal is not sent to the
ETACS-ECU.
D
Windshield intermittent wiper switch signal is not sent to
the ETACS-ECU.
D
Windshield low-speed wiper switch signal is not sent to the
ETACS-ECU.
D
Windshield high-speed wiper switch signal is not sent to
the ETACS-ECU.
D
Windshield washer switch is not sent to the ETACS-ECU.
D
Rear wiper switch is not sent to the ETACS-ECU.
D
Rear washer is not sent to the ETACS-ECU.
Probable cause
The column switch (wiper and washer switch) is used to operate the following
systems or functions. If the signal fails, these systems or function will not work
normally.
DWindshield wiper and washer
DRear wiper and washerDMalfunction of column switch
DMalfunction of ETACS-ECU
NG
Replace the ETACS-ECU.
Ye sCarry out troubleshooting while referring to the Diagnosis Code
Chart on P.54B-9.
Check trouble symptoms.
No
Replace the column switch (wiper and washer switch).
OK
Replace the column switch (lighting switch).
No
Check the column switch (wiper and washer switch and switch
body). (Refer to GROUP 51 - Windshield Wiper and Washer and
GROUP 54A - Column Switch.)NG
Replace
Is a diagnosis code output when the ignition switch is at the
OFF (LOCK) position?
Inspection Procedure P-15
Column switch: Windshield intermittent wiper interval
adjusting knob signal is not sent to the ETACS-ECU.Probable cause
If the windshield intermittent wiper interval adjusting knob is defective the
windshield intermittent wiper interval can not be adjusted.DMalfunction of column switch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
OK
Replace the ETACS-ECU.
NG
Check the harness wire between column switch and ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
OK
Check the following connectors:
D-203, D-226NG
Repair
Check the windshield intermittent wiper interval adjusting knob.
(Refer to GROUP 51 - Windshield Wiper and Washer.)NG
Replace


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SWS -Troubleshooting54B-51
Inspection Procedure P-16
Power window main switch: Any switch signal is not sent
to the ETACS-ECU.Probable cause
If there is a problem with communication between the power windowmainswitch
and the ETACS-ECU, the input signal check for the power windowmainswitch
can no longer be carried out. In addition, the power window timer function will
also stop working.DMalfunction of power windowmainswitch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
Ye s
NG
Repair
NG
No
(1) NG
NG
Repair
NG
Check the harness wire between power windowmainswitch and
power window relay.
OK
Replace the power windowmainswitch.
NG
Repair
NG
Check the harness wire between power windowmainswitch and
body earth.
NG
Repair
Check trouble symptoms.NGReplace the ETACS-
ECU.
OK
Check trouble symptoms.
(2) NG
Check the following connectors:
H-05, D-25
OK
Check trouble symptoms.
Check the following connectors:
H-05, H-25, D-208, D-221Measure at power windowmainswitch connector H-05.
DDisconnect connector and measure at harness side.
DTurn the ignition switch to ON position.
(1) Voltage between terminal 1 or
5 and body earth.
OK:System voltage
(2) Continuity between terminal 5
or 3 and body earth.
OK:Continuity
OK
Replace the power win-
dow mainswitch
Check the harness wire between power windowmainswitch and
ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
H-05, D-25, D-31, D-226Can the driver’s side power window be operated by the power
window mainswitch?


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SWS -Troubleshooting54B-52
Inspection Procedure P-17
Transmitter: Any switch signal is not sent to the
ETACS-ECU.Probable cause
The transmitter input signal is used to operate the keyless entry system. If the
signal fails, keyless entry will not work normally.DMalfunction of transmitter
DMalfunction of ETACS-ECU
Ye s
NG
Replace
OK
Replace the defective transmitter.
OK
Use an other transmitter to register the secret code. (Refer to
GROUP 42 – Keyless Entry System.)NGReplace the ETACS-ECU.
Check the transmitter battery. (Refer to GROUP 42 – Keyless
Entry System.)
Has the encrypted codebeen registered properly?NoRe-register the encrypted code. (Refer to GROUP 42 – Keyless
Entry System.)
Inspection Procedure P-18
Sunroof switch: Any switch signal is not sent to the
ETACS-ECU.Probable cause
If there is a problem with communication between the sunroof motor assembly
and the ETACS-ECU, the input signal check for the sunroof switch can no
longer be carried out. In addition, the sunroof timer function will also stop
working.DMalfunction of sunroof switch
DMalfunction of sunroof motor assembly
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
Ye s
NG
Repair
NG
Replace the ETACS-ECU.
OK
Replace the sunroof motor assembly.Check trouble symptoms.
NG
Check the harness wire between sunroof motor assembly and
ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
F-06, F-02, D-29, D-31, D-226
Is the sunroof operated normally?NoCheck the sunroof. (Refer to P.54B-13, Trouble Symptom
Chart.)


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