Mitsubishi Montero (2004+). Manual — part 547

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-157

.

CIRCUIT OPERATION
The sound signals are sent from the radio and CD
player into the amplifier. After the signals are ampli-
fied and filtered, the sound signals are sent to the
speaker.

.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty speaker circuit sys-
tem.

.

TROUBLESHOOTING HINTS

• Malfunction of the speaker.

• Damaged wiring harness or connector.

• Malfunction of the radio and CD player.

• Malfunction of the amplifier.

AC204171

CONNECTORS : D-15, D-111

AX

D-111

D-15

AC204170

CONNECTORS: D-25, D-124, D-125

DP

D-25

D-125

D-124

AC204178

CONNECTOR : F-12

AK

AC204177

CONNECTOR : F-23

AN

AC204179

CONNECTORS : G-01, G-19

BC

G-01(B)

G-19

AC204180

CONNECTORS : H-06, H-08, H-12

AL

H-06

H-08

H-12

AC204181

CONNECTORS : H-15, H-22, H-26

AL

H-15

H-22

H-26

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-158

DIAGNOSIS

STEP 1. Check to see which speaker does not sound.

Determine which speaker does not sound.
Q: Which speaker is not sounding?

Front door speaker (LH) : Go to Step 2.
Front door speaker (RH) : Go to Step 6.
Rear speaker (LH) : Go to Step 10.
Rear speaker (RH) : Go to Step 14.
Tweeter (LH) : Go to Step 18.
Tweeter (RH) : Go to Step 22.
woofer : Go to Step 26.

STEP 2. Check the front door speaker (LH).

(1) Remove the front door speaker (LH). Refer to

P.54A-190

.

(2) Check that the front door speaker (LH) generates noise

when a five-volt voltage is applied on the front door speaker
(LH) terminal.

Q: Is the front door speaker (LH) generating noise?

YES : Go to Step 3.
NO : Replace the front door speaker (LH). The front door

speaker (LH) should sound.

STEP 3. Check front door speaker (LH) connector H-08 and
amplifier connector G-19 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.

Q: Are front door speaker (LH) connector H-08 and

amplifier connector G-19 in good condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The door speaker (LH) should sound.

ACX01868AB

5V

AC204179

CONNECTOR : G-19

AV

HARNESS SIDE

3 2

1110

4

1312

1
9

5

6

1615

7

8

1817

14

AC204180

CONNECTOR : H-08

AJ

HARNESS SIDE

2

1

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-159

STEP 4. Check the wiring harness between front door
speaker (LH) connector H-08 (terminals 1 and 2) and
amplifier connector G-19 (terminals 13 and 14).

NOTE: Also check intermediate connectors D-25 and D-125. If
intermediate connector D-25 or D-125 are damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection

P.00E-2

.

Q: Is the wiring harness between front door speaker (LH)

connector H-08 (terminals 1 and 2) and amplifier
connector G-19 (terminals 13 and 14) in good
condition?
YES : Go to Step 5.
NO : Repair the wiring harness. The door speaker (LH)

should sound.

AC204179

CONNECTOR : G-19

AV

HARNESS SIDE

3 2

1110

4

1312

1
9

5

6

1615

7

8

1817

14

AC204180

CONNECTOR : H-08

AJ

HARNESS SIDE

2

1

AC204188

CONNECTORS : D-25, D-125

BN

D-125

D-25

D-25

D-125

9

8

6 7

5

3 4

20

32

21

33

43

17 18

30

41

16

29

28

39 40

13

25

12

24

35 36

14

26

37

15

27

38

19

31

42

1

10

22

2

11

23

34

10

9

31

30

20 21

7

6

28

17 18

8

19

29

4

3

25 26

14 15

1

23

12

2

13

24

5

16

27

11

22

32

RADIO WITH TAPE PLAYER AND CD PLAYER

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CHASSIS ELECTRICAL

54A-160

STEP 5. Replace the radio and CD player.
Q: Do the speakers sound?

YES : There is no action to be taken.
NO : Repair or replace the amplifier. The front door

speaker (LH) should sound.

STEP 6. Check the front door speaker (RH).

(1) Remove the front door speaker (RH). Refer to

P.54A-190

.

(2) Check that the front door speaker (RH) generates noise

when a five-volt voltage is applied on the front door speaker
(RH) terminal.

Q: Is the front door speaker (RH) generating noise?

YES : Go to Step 7.
NO : Replace the front door speaker (RH). The front door

speaker (RH) should sound.

STEP 7. Check front door speaker (RH) connector H-26
and amplifier connector G-19 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.

Q: Are front door speaker (RH) connector H-26 and

amplifier connector G-19 in good condition?
YES : Go to Step 8.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The front door speaker (RH) should sound.

ACX01868AB

5V

AC204179

CONNECTOR : G-19

AV

HARNESS SIDE

3 2

1110

4

1312

1
9

5

6

1615

7

8

1817

14

AC204181

CONNECTOR : H-26

AJ

HARNESS SIDE

2

1