Mitsubishi Montero (2002-2004). Manual — part 330

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

54Bb-367

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TECHNICAL DESCRIPTION (COMMENT)
If the high-beam indicator light does not illuminate,
the high-beam indicator light bulb or the ETACS-
ECU may be defective.

.

TROUBLESHOOTING HINTS

• The high-beam indicator light bulb may be defec-

tive

• The ETACS-ECU may be defective

• The wiring harness or connectors may have

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

.

DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP 1. Verify the headlight operation.
Q: Do the headlights illuminate?

YES : Go to Step 2.
NO : Repair the headlights first (Refer to

P.54Bb-2

).

STEP 2. Check at ETACS-ECU connector D-224 in order to
check the high-beam indicator light circuit.
(1) Disconnect ETACS-ECU connector D-224, and measure at

the wiring harness side.

(2) Turn the ignition switch to the "ON" position.

(3) Connect terminal 30 to ground.
Q: Does the high-beam indicator light illuminate?

YES : Replace the ETACS-ECU. Verify that the high-beam

indicator light illuminates normally.

NO : Go to Step 3.

AC204173

CONNECTORS : D-210, D-211

D-210

D-211(B)

AU

AC204174

CONNECTOR : D-224

D-224(B)

AG

AC204174

CONNECTOR : D-224

AD

D-224(B)

D-224(B)

HARNESS SIDE

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23

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22

32

3433

31

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3029

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35

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40

AC101398 AB

CONNECTOR D-224
(HARNESS SIDE)

SYMPTOM PROCEDURES

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STEP 3. Check high-beam indicator light bulb.
(1) Remove the high-beam indicator light bulb.
(2) Verify that the high-beam indicator light bulb is not

damaged or burned out.

Q: Is the high-beam indicator light normal?

YES : Go to Step 4.
NO : Replace the bulb. Verify that the high-beam indicator

light illuminates normally.

STEP 4. Check the combination meter (printed-circuit
board).
(1) Remove the combination meter. Refer to GROUP 54A,

Combination Meters Assembly And Vehicle Speed Sensor

P.54A-65

.

(2) Remove the high-beam indicator light bulb. Then measure

the resistance value between the bulb terminals.

(3) Install the bulb to the combination meter, and then measure

the resistance value between connector D-04 terminals 34
and 35. 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 : Repair or replace the combination meter (printed

circuit board). Verify that the headlight-beam indicator
light illuminates normally.

NO (roughly the same) : Go to Step 5.

STEP 5. Check the fusible link (2) line of the power supply
circuit to the combination meter. Test at combination
meter connector D-04.
(1) Disconnect combination meter connector D-04 and

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

(2) Measure the voltage between terminal 34 and ground.

• The voltage should equal 12 volts (battery positive volt-

age).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 8.
NO : Go to Step 6.

46

45

44

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42

41

32

31

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47

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36

35

34

33

40

AC100266AB

CONNECTOR D-04

AC204170

CONNECTOR : D-04

AD

D-04(GR)

HARNESS
SIDE

D-04(GR)

31

32

41 40

33

34

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35

43

46 45 44

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47

AC204461

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40

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34

35

36

47

AB

CONNECTOR D-04
(HARNESS SIDE)

SYMPTOM PROCEDURES

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STEP 6. Check combination meter connector D-04 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is combination meter connector D-04 in good

condition?
YES : Go to Step 7.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. Verify that the high-beam indicator light

illuminates normally.

AC204170

CONNECTOR : D-04

AD

D-04(GR)

HARNESS
SIDE

D-04(GR)

31

32

41 40

33

34

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35

43

46 45 44

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47

SYMPTOM PROCEDURES

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STEP 7. Check the wiring harness between combination
meter connector D-04 (terminal 34) and the fusible link (2).

ACX02274

FUSIBLE LINK (2)

AC

BATTERY

AC204188

CONNECTORS : D-04, D-28

D-04(GR)

AK

HARNESS SIDE

D-04(GR)

D-28

D-28

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32

41 40

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