roof MITSUBISHI MONTERO 2000 Service User Guide

SWS -General Information54B-3
POWER WINDOWS
Power Windows Operation
A signal line dedicated for transmission of multiplex
communication data is connected between the
power window main switches and the power window
motor-ECU.
Communication is uni-directional. The power
window main switches have a transmitting circuit
only, whereas the power window sub switches have
a receiving circuit only.
Power Window Timer Function
With the ignition switch in the ON position, the power
window relay and power window switch receipt
permission signal (a SWS signal transmitted from
the ETACS-ECU) are turned ON [the power windowswitch receipt permission signal remains ON for 30
seconds after the ignition switch is turned LOCK
(OFF)], enabling opening and closing of the
windows. The power window relay goes ON for
additional 30 seconds. If the driver’s door is
subsequently closed during this period, the receipt
permission signal goes OFF. The power window
relay goes OFF 10 seconds after the receipt
permission signal goes OFF.
If the driver’s door is opened during timer operation,
the receipt permission signal goes ON for additional
30 seconds. If the driver’s door is subsequently
closed during this period, the receipt permission
signal goes OFF ten seconds after the receipt
permission signal goes OFF.
KEYLESS ENTRY SYSTEM
Keyless Entry System Operation
If the transmitter LOCK or UNLOCK switch is
pressed while the ignition key is removed and all
of the doors are closed, the doors can be locked
or unlocked.
Keyless Entry Answerback Function
The keyless entry hazard answerable function
facilitates confirmation of door locking and unlock-
ing operations even in daylight. When a LOCKsignal from the keyless entry transmitter is applied
to the ETACS-ECU, all of the turn-signal lamps flash
twice. When an UNLOCK signal from the keyless
entry transmitter is applied to the ETACS-ECU, all of
the turn-signal lamps flash four times. Note that an
unlock switch has change from OFF to ON.
NOTE
The hazard answer back is enabled or disabled
by the configuration function.
SUNROOF
Sunroof Operation
All of the slide open/close, tilt up/down, and stop
operations can be performed by a single switch.
When the roof lid glass is tilted up, the sunshade
opens approximately 98 mm in combined operation
with the roof lid glass for better ventilation.
A jam preventing mechanism has been adopted.
When a slide-close or tilt-down operation is blocked
by an external force, the roof lid glass moves back
and stops.Sunroof Timer Function
When the ignition switch is turned from ON position
to LOCK (OFF) or ACC position, the sunroof will
be ready to work for 30 seconds.
If the driver’s door is opened during the timer
operation, the timer operates for another
30
seconds starting from that point. However, the
timer operation discontinues if the door is closed
during that period.


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SWS -Troubleshooting54B-9
Input signalBuzzer operation condition
Column switchTail lamp switchTurned the lighting switch from OFF to tail lamp
position
Headlamp switchTurn the lighting switch from tail lamp position to
headlamp position
Dimmer switchTurned from OFF to ON
Passing switch
Turn-signal lamp switch
Windshield mist wiper switch
Windshield intermittent wiper switch
Windshield low-speed wiper switch
Windshield high-speed wiper switch
Windshield intermittent wiper interval adjusting
knobRotate the windshield intermittent wiper interval
adjusting knob from FAST to SLOW when the
ignition switch is in ON position (The
ETACS-ECU sends a signal around the medium
knob position)
Windshield washer switchTurned from OFF to ON
Rear wiper switch washer>
Rear washer switch and washer>
Headlamp washer switch headlamp washer>
Power window
main switchAny switch Turned from OFF to ON
TransmitterAny switch system>Turned from OFF to ON
Sunroof switchAny switch Turned from OFF to ON
Center displayAny switch Turned from OFF to ON
DIAGNOSIS CODE CHART
Code No.Diagnosis itemReference page
11Failure concerning the ETACS-ECU54B-10
12Failure concerning the column switch or improper connecting with the ETACS-ECU54B-10
13Failure concerning the front-ECU54B-11
21Short circuit in communication line54B-12


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SWS -Troubleshooting54B-12
Code No.21 Short circuit in communication linesProbable cause
This diagnosis code is displayed when the SWS communication line voltage
reaches the LO level for 0.3 second. The diagnosis code is erased when
voltage in the ETACS-ECU data line reaches the HI level for 0.3 second, or the
ETACS-ECU receives a normal signal from other ECUs or switches. While this
code is displayed, other codes are not displayed.DMalfunction of column switch
DMalfunction of front-ECU
DMalfunction of power windowmainswitch

DMalfunction of sunroof motor assembly with sunroof>
DMalfunction of center display display>
DMalfunction of ETACS-ECU
DMalfunction of wiring harness or connector
NG
Repair
OK
Ye s
Replace the column switch.
No
Ye s
Replace the front-ECU.
No
Ye s
Replace the power windowmainswitch.
No
Ye s
Replace the center display.
No
Replace the ETACS-ECU.
No
Ye s
Replace the sunroof motor assembly.
Is diagnosis code No. 21 no longer output when center
display connector D-06 is disconnected?
Is diagnosis code No. 21 no longer output when sunroof
motor assembly connector F-06 is disconnected?
Is diagnosis code No. 21 no longer output when power
window mainswitch connector H-05 is disconnected?
Is diagnosis code No. 21 no longer output when front-ECU
connector A-08X is disconnected? (However, code No. 13 is
still output.)
Is diagnosis code No. 21 no longer output when column
switch connector D-203 is disconnected? (However, code No.
12 is still output.)
NG
Check the harness wires between column switch and ETACS-ECU,
front-ECU and ETACS-ECU, power windowmainswitch and
ETACS-ECU, sunroof motor assembly and ETACS-ECU, center
display and ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
A-08X, D-06, D-25, D-27, D-29, D-31, D-203, D-226, F-02, F-06,
H-05


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SWS -Troubleshooting54B-13
TROUBLE SYMPTOM CHART
Trouble symptomInspection
procedureReference
page
Communication with the MUT-IIis impossible.A-154B-17
BuzzerLight reminder warning buzzer function does not work
normally.B-154B-17
Center display operation annunciation function does not work
normally.B-254B-18
Central door lock-Central door locking system does not work normally.C-154B-18
ing system
Some doors does not lock or unlock.C-254B-19
Some functions of central locking system do not work.C-354B-19
Forgotten key prevention function does not work.C-454B-20
Power windowPower window does not work at all.D-154B-20
Power window main switch can not operate driver’s window.D-254B-21
Power window sub switch can not operate front passenger’s or
rear window.D-354B-22
Power window main switch can not operate front passenger’s
or rear window.D-454B-23
Power window timer function does not work normally.D-554B-23
When the glass is raised, it then lowers automatically.D-654B-24
The glass is not lowered when something is jammed in the
window.D-754B-24
When the glass is fully raised, it then lowers automatically.D-854B-24
Keyless entry sys-Keyless entry system does not operate.E-154B-24
tem
The room lamp and hazard warning lamps do not operate
through the answerback function.E-254B-25
The encrypted code cannot be registered.E-354B-25
SunroofSunroof does not work at all.F-154B-26
Sunroof timer function does not work normally.F-254B-27
Safety mechanism does not function.F-354B-27


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SWS -Troubleshooting54B-16
Trouble symptomInspection
procedureReference
page
Column switchTail lamp switch signal is not sent to the ETACS-ECU.P-1354B-49
Headlamp switch signal is not sent to the ETACS-ECU.
Dimmer switch signal is not sent to the ETACS-ECU.
Passing switch signal is not sent to the ETACS-ECU.
Turn-signal lamp switch signal is not sent to the ETACS-ECU.
Windshield mist wiper switch signal is not sent to the
ETACS-ECU.P-1454B-50
Windshield intermittent wiper switch signal is not sent to the
ETACS-ECU.
Windshield low-speed wiper switch signal is not sent to the
ETACS-ECU.
Windshield high-speed wiper switch signal is not sent to the
ETACS-ECU.
Windshield intermittent wiper interval adjusting knob signal is
not sent to the ETACS-ECU.P-1554B-50
Windshield washer switch signal is not sent to the
ETACS-ECU.P-1454B-50
Rear wiper switch signal is not sent to the ETACS-ECU.
Rear washer switch signal is not sent to the ETACS-ECU.
Headlamp washer switch signal is not sent to the ETACS-ECU.P-1354B-49
Power window
main switchAny switch signal is not sent to the ETACS-ECU.P-1654B-51
TransmitterAny switch signal is not sent to the ETACS-ECU.P-1754B-52
Sunroof switchAny switch signal is not sent to the ETACS-ECU.P-1854B-52
Center displayAny switch signal is not sent to the ETACS-ECU.P-1954B-53


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SWS -Troubleshooting54B-26
Inspection Procedure F-1
Sunroof: Sunroof does not work at all.Probable cause
The power supply circuit of the sunroof motor assembly, the sunroof switch
ground circuit, or the sunroof motor assembly may be defective.DMalfunction of sunroof switch
DMalfunction of sunroof motor assembly
DMalfunction of harness wire or connector
NG
Repair
NG
Check the harness wire between sunroof motor assembly and
fusible link (4).
NG
Repair
NG
Check the harness wire between sunroof motor assembly and
ignition switch (IG2).
NG
Repair
NG
Repair
NG
Repair
NG
Check the harness wire between sunroof motor assembly and
fusible link (2).
NG
Check the harness wire between sunroof motor assembly and
body earth.
NG
Repair
NG
Check the harness wire between sunroof switch and body earth.
NG
Repair
OK
Replace the sunroof motor assembly.
NG
Repair
NG
Check the harness wire between sunroof switch and sunroof motor
assembly.
OK
Check trouble symptoms.
OK
Check the following connectors:
F-05, F-06
OK
Check trouble symptoms.
OK
NG
Check the following connectors:
F-05, F-02, D-29
F-05, F-02, D-29, D-207, D-209Measure at sunroof switch connector F-05.
DDisconnect connector and measure at harness side.
DContinuity between terminal 4 and body earth.
OK:Continuity
OK
Check trouble symptoms.
(4) NG
Check the following connector:
F-06
OK
Check the sunroof switch. (Refer to GROUP 42 – Sunroof.)
OK
Check trouble symptoms.
(3) NG
Check the following connectors:
F-06, F-02, D-29, D-207, D-223, D-27
OK
Check trouble symptoms.
(2) NG
Check the following connectors:
F-06, F-02, D-29, D-32, D-210, D-208
OK
Check trouble symptoms.
Measure at sunroof motor assembly connector F-16.
DDisconnect connector and measure at harness side.
DTurn the ignition switch to ON position.
(1) Voltage between terminal 1 and body earth.
OK:System voltage
(2) Voltage between terminal 2 and body earth.
OK:System voltage
(3) Voltage between terminal 3 and body earth.
OK:System voltage
(4) Continuity between terminal 5 and body earth.
OK:Continuity(1) NGCheck the following connectors:
F-06, F-02, D-29, D-27


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SWS -Troubleshooting54B-27
Inspection Procedure F-2
Sunroof: Sunroof timer function does not work normally.Probable cause
The sunroof motor assembly operates the sunroof timer function, based on the
input signals from the following switches:
DIgnition switch (IG1)
DDriver’s door switch
If the function does not work normally, a defect on the relevant circuit, sunroof
motor assembly or the ETACS-ECU may be suspected.DMalfunction of driver’s door switch
DMalfunction of sunroof motor assembly
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
OK
NoNGCheck the defective input circuit. (Refer to P.54B-15, Defects Found
by input Signal Check.)
NG
Replace the ETACS-ECU.
Check trouble symptoms.Replace the sunroof motor assembly.
MUT-
IIinput signal check
DIgnition switch (IG1)
DDriver’s door switch
DSunroof switch
Is a diagnosis code output when the ignition switch is at the
OFF (LOCK) position?Ye sCarry out troubleshooting while referring to the Diagnosis Code
Chart on P.54B-9.
Inspection Procedure F-3
Sunroof: Safety mechanism does not work normally.Probable cause
The sunroof motor assembly monitorsload condition according to thecurrent,
which runs in the motor. If a predetermined current is exceeded, the sunroof
motor reverses due to safety mechanism. If the sunroof motor does not reverse
when an excessiveload is applied, the sunroof motorassembly may be
defective.DMalfunction of sunroof motor assembly
Replace the sunroof motor assembly.


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SWS -Troubleshooting54B-42
Inspection Procedure P-1
Ignition switch (ACC) signal is not sent to the ETACS-ECU.Probable cause
The ignition switch (ACC) input signal is used to operate the following devices. If
the signal fails, these devices will not work normally.
DWindshield wiper and washer
DRear wiper and washer
DHeadlamp washerDMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
NG
Repair
NG
Check the harness wire between ETACS-ECU and ignition switch
(ACC).
OK
Check trouble symptoms.OK
Replace the ETACS-ECU.
Check the following connectors:
D-224, D-208Measure at ETACS-ECU connector D-224.
DDisconnect connector and measure at J/B side.
DTurn the ignition switch to ACC position.
DVoltage between terminal 2 and body earth.
OK:System voltage
Inspection Procedure P-2
Ignition switch (IG1) signal is not sent to the ETACS-ECU.Probable cause
The ignition switch (IG1) input signal is used to operate the following devices. If
the signal fails, these devices will not work normally.
DLight reminder warning buzzer function
DPower window timer function
DSunroof timer function
DIgnition key hole illumination lamp
DHeadlamp automatic shutdown function
DTurn-signal lamp
DRoom lamp dimming functionDMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
NG
Repair
NG
Check the harness wire between ETACS-ECU and ignition switch
(IG1).
OK
Check trouble symptoms.OK
Replace the ETACS-ECU.
Check the following connectors:
D-224, D-208Measure at ETACS-ECU connector D-224.
DDisconnect connector and measure at J/B side.
DTurn the ignition switch to ON position.
DVoltage between terminal 16 and body earth.
OK:System voltage


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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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