Mitsubishi Montero (2004+). Manual — part 803

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-469

STEP 8. Check the key reminder switch (ignition key hole
illumination).
(1) Disconnect key reminder switch connector D-202.
(2) Remove the ignition key hole illumination light bulb. Then

measure the resistance value between the bulb terminals.

(3) Install a bulb to the key remainder switch, and measure the

resistance between connector D-202 terminal 1 and 2.The
measured resistance value should be roughly the same as
the value measured in Step (2).

Q: Are these two resistance values extremely different?

YES : Replace the key reminder switch. Verify that the

ignition key hole illumination light illuminates normally.

NO (roughly the same) : Go to Step 9.

STEP 9. Check the fusible link (1) line of the power supply
circuit to the key reminder switch. Test at key reminder
switch connector D-202.
(1) Disconnect key reminder switch connector D-202 and

measure at the voltage available at the wiring harness side
of the connector.

(2) Measure the voltage between terminal 2 and ground.

• The voltage should be approximately 12 volts (battery

positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 11.
NO : Go to Step 10.

AC204172

CONNECTOR: D-202

AK

HARNESS SIDE

4

5

3

1

6

7

2

AC204172

CONNECTOR: D-202

AK

HARNESS SIDE

4

5

3

1

6

7

2

5 4 3

2

1

7 6

AC100253AB

CONNECTOR D-202
(HARNESS SIDE)

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-470

STEP 10. Check the wiring harness between key reminder
switch connector D-202 (terminal 2) and fusible link (1).

NOTE: Also check intermediate connector D-28 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connectors D-28 is damaged, repair
or replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between key reminder switch

connector D-202 (terminal 2) and fusible link (1) in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the ignition key hole illumination light illuminates
normally.

ACX02274

FUSIBLE LINK (1)

AE

BATTERY

AC204172

CONNECTOR: D-202

AK

HARNESS SIDE

4

5

3

1

6

7

2

AC204170

CONNECTOR : D-28

AI

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-471

STEP 11. Check the wiring harness between key reminder
switch connector D-202 (terminal 1) and ETACS-ECU
connector D-224 (terminal 36).
Q: Is the wiring harness between key reminder switch

connector D-202 (terminal 1) and ETACS-ECU connector
D-224 (terminal 36) in good condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the ignition key hole illumination light illuminates
normally.

THEFT-ALARM SYSTEM

GENERAL DESCRIPTION CONCERNING THE THEFT-ALARM SYSTEM

M1549022100081

The following ECUs affect the functions and control
of the theft-alarm function.

Theft-alarm system

.

Arming the system
After the following procedures have been completed,
the theft-alarm indicator light illuminates for about 20
seconds. When the light goes off, the system is
armed.

1. Pull out the ignition key from the key cylinder.
2. Lock all doors with the key or the RKE transmit-

ter.

NOTE: The system is set regardless of whether the
hood trunk is open or closed, and is armed as soon
as the light goes off.

.

Disarming the system
The system is disarmed if any of the following condi-
tions is satisfied.

• Unlock the doors by using the door lock key cylin-

der.

• Unlock the doors by using the RKE transmitter.

.

Activating the alarm

1. If any door or hood is opened without key or RKE

transmitter, while the system is armed, the horn
(theft-alarm horn and horn) will sound intermit-
tently and the headlights (high-beam) will flash on
and off for approximately three minutes.

2. If any door or the hood is opened without disarm-

ing the alarm by using the key or the RKE trans-
mitter, the alarm will be activated again. Note that
the alarm will not be deactivated by disconnect-
ing the battery.

.

AC204172

CONNECTOR: D-202

AK

HARNESS SIDE

4

5

3

1

6

7

2

AC204174

CONNECTOR : D-224

AD

D-224(B)

D-224(B)

HARNESS SIDE

21

23

24

22

32

3433

31

26

27

28

3029

38

39

40

36

37

25

35

FUNCTION

CONTROL ECU

Theft-alarm system

ETACS-ECU, front-ECU

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-472

Deactivating the alarm
To deactivate the alarm, insert the key into the door’s
key cylinder and turn the key or operate the RKE
transmitter (except "PANIC" button).

.

Checking the system operation
The activation/operation of the system can be
checked by following steps below.

1. Turn the ignition key to the "ON" position and to

fully open the window on the driver’s side with the
power window switch.

2. Turn the ignition key to the "LOCK" (OFF) posi-

tion and then remove the key from the ignition.

3. Close all doors.
4. Lock all doors with the key or RKE transmitter.

5. The theft-alarm indicator light will illuminate;

check to be sure that the light goes off in about 20
seconds.

6. After the theft-alarm indicator light goes off,

unlock with the driver’s door lock knob, and open
the driver’s door.

7. Check to be sure that, when the door is opened,

the horn starts sounding and the headlights flash
on and off.

8. To stop the alarm, insert the key into the door key

cylinder and turn the key or press RKE transmit-
ter switch.

NOTE: To check the alarm for the opening of the
hood, open the hood by using the hood release lever,
located on the driver’s side either before the alarm is
activated by the opening of a door, or after the finish
of the first three-minute alarm.