key MITSUBISHI MONTERO 2000 Service Service Manual

SWS -Troubleshooting54B-38
No
NG
OK
Replace the ETACS-
ECU.
NG
Check the defective input
circuit. (P.54B-15, De-
fects Found by Input Sig-
nal Check.)
NG
Repair
NG
Check the harness wire between ETACS-ECU and battery.
OK
NG
Repair
OK
Replace the ETACS-ECU.
NG
Check the harness wire between ETACS-ECU and turn-signal
lamps.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
D-224, D-213, D-210, D-218 , D-219 drive vehicles>
OK
Check trouble symptoms.
Check the following connectors:
D-224, D-223, D-27Measure at ETACS-ECU connector D-224.
DDisconnect connector and measure at J/B side.
DVoltage between terminal 11 and body earth.
OK:System voltage.
Is the hazard warninglamp operated normally?Ye sMUT-
IIinput signal check
DIgnition switch (IG1)
DTurn-signal lampswitch
NOTE
If only one of the turn-signal lamp does not flash, the harness wire between the lamp and ETACS-ECU
may be defective or the lamp bulb may be burned out. In this case, check the turn-signal lamp and
hazard warning lamp circuit.
Inspection Procedure L-2
Flasher timer: Hazard warning lamp do not flash when the
hazard warning lamp switch is turned on.Probable cause
The ETACS-ECU makes the turn-signal lamps flash, base on the input signals
from the hazard warninglampswitch.
If the turn-signal lamps do not flash normally, the hazard warninglampswitch
input circuit or the ETACS-ECU may be defective.DMalfunction of hazard warninglampswitch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
OK
Replace the ETACS-ECU.
NoCheck the turn-signallampcircuit. (Refer to P.54B-37, Inspection
Procedure L-1.)
Ye s
NG
Check the ETACS-ECU battery circuit. (Refer to P.54B-53, Inspec-
tion Procedure Q-1.)
OK
NG
Check the hazard warninglampswitch input circuit. (Refer to
P.54B-43, Inspection Procedure P-4.)MUT-
IIinput signal check
DHazard warninglampswitch
Do all of the following functions operate when the ignition key
is at the LOCK (OFF) position?
DLight reminder warning function
DRoom lamp
Is the turn-signal lamp operated normally?


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SWS -Troubleshooting54B-41
Inspection Procedure O-1
Room lamp: Room lamp does not illuminate.Probable cause
If the room lampdoes not illuminate at all, the roomlamp bulb may be burned
out, or the power supply circuit or the ETACS-ECU may be defective.DMalfunction of room lamp
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
Ye s
NG
Repair
NG
No
NG
OK
Replace the room lamp.
NG
Repair
NG
Check the harness wire between roomlamp and fusiblelink (2).
OK
Replace the ETACS-
ECU.
NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
F-07, D-29, D-207, D-223, D-27Measure at room lampconnector F-07.
DDisconnect connector and measure at harness side.
DVoltage between terminal 1 and body earth.
OK:System voltage
Check the harness wire between roomlamp and ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
F-07, D-29, D-207, D-224Does the roomlampturn on when the roomlampswitch is
set to the ON position?
Inspection Procedure O-2
Room lamp: Room lamp dimming function does not work
normally.Probable cause
The ETACS-ECU dims the roomlamp according to the inputsignals from the
following switches:
DIgnition switch (IG1)
DKey reminder switch
DDoor switches
DDriver’s door lock actuator switch
If the room lampdoes not bedimmed normally, the relevant input signalcircuit
or the ETACS-ECU may be defective.DMalfunction of key reminder switch
DMalfunction of driver’s door switch
DMalfunction of door switches
DMalfunction of driver’s door lock actuator switch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NGCheck the ETACS-ECU battery circuit. (Refer to P.54B-53, Inspec-
tion Procedure Q-1.)
OK
NG
Check the defective input circuit. (Refer to P.54B-15, Defects Found
by Input Signal Check.)
OK
Replace the ETACS-ECU.
MUT-
IIinput signal check
DIgnition switch (IG1)
DKey reminder switch
DDoor switches
DDriver’s door lock actuator switch
Do all of the following functions operate when the ignition key
is at the LOCK (OFF) position?
DLight reminder warning function
DCentral door locking system
DHazard warninglamp


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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-43
Inspection Procedure P-3
Key reminder switch signal is not sent to the ETACS-ECU.Probable cause
The key reminder switch input signal is used to operate the following devices. If
the signal fails, these devices will not work normally.
DForgotten key prevention function
DKeyless entry system
DIgnition key hole illuminaiton lamp
DRoom lamp dimming functionDMalfunction of key reminder switch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
Replace
OK
NG
NG
Repair
NG
Check the harness wire between key reminder switch and body
earth.
OK
NG
Repair
NG
NG
Repair
OK
Replace the ETACS-ECU.
Check the harness wire between key reminder switch and ETACS-
ECU.
OK
Check trouble symptoms.
Check the following connectors:
D-202, D-226
Measure at key reminder switch connector D-202.
DDisconnect connector and measure at harness side.
DContinuity between terminal 4 and body earth.
OK:Continuity
OK
Check trouble symptoms.
Check the following connectors:
D-202, D-30
Check the key reminder switch. (Refer to GROUP 54A – Ignition
Switch and Immobilizer System.)
Inspection Procedure P-4
Hazard warning lamp switch signal is not sent to the
ETACS-ECU.Probable cause
The hazard warninglampswitch input signal is used to operate the following
devices. If the signal fails, these devices will not work normally.
DHazard warninglamp
DKeyless entry system (Registering the encrypted code)DMalfunction of hazard warninglampswitch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
NG
Replace
OK
NG
NG
Repair
NG
Check the harness wire between hazard warninglampswitch and
body earth.
OK
NG
Repair
NG
NG
Repair
OK
Replace the ETACS-ECU.
Check the harness wire between hazard warninglampswitch and
ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
D-104, D-226
Measure at hazard warninglampswitch connector D-104.
DDisconnect connector and measure at harness side.
DContinuity between terminal 2 and body earth.
OK:Continuity
OK
Check trouble symptoms.
Check the following connector:
D-104
Check the hazard warninglampswitch. (Refer to GROUP 54A
– Hazard WarningLampSwitch.)


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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-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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SWS -Troubleshooting54B-53
Inspection Procedure P-19
Center display: Any switch signal is not sent to the
ETACS-ECU.Probable cause
The cause is probably a malfunction of the center display or the ETACS-ECU.DMalfunction of center display
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
Ye s
NG
Repair
NG
Replace the ETACS-ECU.
OK
Replace the center display.Check trouble symptoms.
NG
Check the harness wire between center display and ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
D-06, D-31, D-226
Is the center display operated normally?NoCarry out troubleshooting for the center display. (Refer to
GROUP 54A – Center Display.)
Inspection Procedure Q-1
Check the circuit (power supply line) from the battery to
the ETACS-ECU.Probable cause
If that power supply circuit is defective, the circuit flowing through the ignition
switch (IG1) will function as a back-up circuit. In this case, the following
functions will not work when the ignition switch is at LOCK (OFF) position.
DIgnition key reminder warning buzzer function
DCentral door lock ing system
DIgnition key hole illumination lamp
DHazard warninglamp
DRoom lampDMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
NG
NG
Repair
NG
Check the harness wire between ETACS-ECU and fusible link
(2).
OK
Replace the ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
D-224, D-223, D-27Measure at ETACS-ECU connector D-224.
DDisconnect connector and measure at J/B side.
DVoltage between terminal 6 and body earth.
OK:System voltage


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SWS -Troubleshooting54B-55
Terminal
No.Normal condition Checking requirements Check items
26Key reminder switch signal inputKey reminder switch: ON (Ignition key
removed)0V
27Hazard warning lamp switch signal
inputHazard warning lamp switch: ON0V
29Recognition line of daytime running
lamp (DRL) Always0V
31Data request signal outputAlways0 - 5 V (pulse
signal)
34Windshield intermittent wiper interval
adjusting knob signal inputIgnition switch: ACC,
Windshield intermittent wiper interval
adjusting knob: FAST®SLOW0®2.5 V
35Back-up lamp switch signal input
Ignition switch: ON,
Shift lever: RSystem voltage
Inhibitor switch (reverse) signal input
Ignition switch: ON,
Selector lever: RSystem voltage
36Ignition key hole illumination lamp
outputWhen ignition key hole illumination
lamp is lighted2 V or less
37Diagnosis code or input signal check
outputWhen diagnosis code is output0 - 12 V (pulse
signal)
When input signal check is output0, 12 V (When input
pulse signal is
changed)
40Rear fog lamp relay outputWhen rear fog lamp is lighted2 V or less
53Front passenger’s and back door lock
key cylinder switch (LOCK) signal inputFront passenger’s or back door lock key
cylinder switch: LOCK0V
54Front passenger’s and back door lock
key cylinder switch (UNLOCK) signal
inputFront passenger’s or back door lock
switch: UNLOCK0V
55Driver’s door lock actuator switch
(LOCK) signal inputDriver’s door lock actuator switch:
LOCK0V
56Driver’s door lock actuator switch
(UNLOCK) signal inputDriver’s door lock actuator switch:
UNLCOK0V


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SWS -On-vehicle Service54B-60
ON-VEHICLE SERVICE
ADJUSTMENT PROCEDURES OF SWS FUNCTION
Through special operation of input switches, it is possible to disable and enable the functions listed below.
Settings are retained even if the battery is disconnected.
DKeyless entry hazard answerback function
DInitialization of above mentioned functions
Configuration Mode Entry Conditions
1. Set each switch at the following condition.
DHazard warning lamp switch: OFF
DDiagnosis control: ON (MUT-II
connected or terminal 1 of diagnosis connector connected to earth)
DKey reminder switch: OFF (ignition key inserted)
DIgnition switch: LOCK (OFF)
DDriver’s door switch: OFF (driver’s door closed)
2. When the windshield washer switch is continuously turned ON for more than 10 seconds, the buzzer
integrated in the ETACS-ECU sounds once and the mode is switched to the configuration mode.
Configuration Mode Cancellation Conditions
The ETACS-ECU cancels the configuration mode when any of the conditions listed below is satisfied.
DDiagnosis control: OFF (MUT-II
disconnected or terminal 1 of diagnosis connector disconnected from
earth)
DKey reminder switch: ON (ignition key removed)
DIgnition switch: any position other than LOCK (OFF)
DDriver’s door switch: ON (driver’s door open)
DNo configuration performed within three minutes of entry to configuration mode (If configuration is
performed within first three minutes, monitoring continues for three minutes from that point.)
Configuration of Functions
FunctionConfiguration procedure
Keyless entry hazard
answerbackIf the transmitter’s LOCK switch is turned ON twice within two seconds, the lock answerback
function’s enabled/disabled status is inverted.
D
When function is enabled, buzzer sounds once (initial status).
D
When function is disabled, buzzer sounds twice.
If the transmitter’s UNLOCK switch is turned ON twice within two seconds, the unlock
answerback function’s enabled/disabled status is inverted.
D
When function is enabled, buzzer sounds once (initial status).
D
When function is disabled, buzzer sounds twice.
Initialization of above
mentioned functionsIf the windshield washer switch is turned ON for more than 20 seconds, the buzzer sounds
twice and all functions are initialized. (The configuration mode entry buzzer sounds after 10
seconds, but the switch must be kept ON for 20 seconds to achieve initialization.)
IF the windshield washer switch ins kept ON for more than 20 seconds without prior entry
of the configuration mode, the configuration mode is entered after 10 seconds and
initialization does not take place.


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