Mitsubishi Montero (2002-2004). Manual - part 488

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-123

STEP 5. Measure at radio and CD player connector D-06 in 
order to check the battery circuit of power supply system 
to the radio and CD player (ignition switch ACC).
(1) Disconnect radio and CD player connector D-06, and 

measure at the wiring harness side.

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

(3) Measure the voltage between terminal 10 and ground by 

backprobing.

• The voltage should equal approximately 12 volts (bat-

tery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

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

STEP 6. Check radio and CD player connector D-06 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Are radio and CD player connector D-06 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

. If the power switch is turned on, the radio 

and CD player should operate normally.

AC204170

CONNECTOR : D-06

CS

HARNESS SIDE

1
7

2
8

10

11

5

13

6

14

12

4

9

3

AC204738 DR

HARNESS SIDE: D-06

6

14

4 5

13

11

3

9 10

2
8

1
7

12

AC204170

CONNECTOR : D-06

CS

HARNESS SIDE

1
7

2
8

10

11

5

13

6

14

12

4

9

3

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-124

STEP 7. Check the wiring harness between radio and CD 
player connector D-06 (terminal 10) and ignition switch 
(ACC).

NOTE: Also check intermediate connector D-28, junction block 
connector D-208 and D-221. If intermediate connector D-28, 
junction block connector D-208 and D-221 is damaged, repair 
or replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

. 

Q: Is the wiring harness between radio and CD player 

connector D-06 (terminal 10) and ignition switch (ACC) 
in good condition?
YES : There is no action to be taken.
NO :  Repair the wiring harness. If the power switch is 

turned on, the radio and CD player should operate 
normally.

AC204188

CONNECTORS: D-06, D-28

D-28

D-06

BK

D-28

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

D-06

1
7

2
8

10

11

5

13

6

14

12

4

9

3

HARNESS SIDE

AC204191

CONNECTORS : D-208, D-221

D-208

D-208

HARNESS SIDE

HARNESS SIDE

D-221

D-221

AQ

1

2

3

5

6

4

3

1

4

6 5

7

8

2

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-125

STEP 8. Check the installation condition of the radio and 
CD player.
NOTE: The radio and CD player are grounded to the instru-
ment panel center reinforcement directly.
Q: Are the radio and CD player installed correctly?

YES : Repair or replace the radio and CD player. If the 

power switch is turned on, the radio and CD player 
should operate normally.

NO :  Install the radio and CD player properly. If the power 

switch is turned on, the radio and CD player should 
operate normally.

INSPECTION PROCEDURE 2: No Sound. <Vehicles with Amplifier>

Amplifier Power Supply Circuit

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-126

.

CIRCUIT OPERATION
Power is supplied from the battery directly to the 
amplifier.

.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty amplifier power supply 
circuit system.

.

TROUBLESHOOTING HINTS

• Damaged wiring harness or connector.

• Damaged DIN cable.

• Malfunction of the amplifier.

• Malfunction of the radio and tape player.

DIAGNOSIS

Required Special Tool:

• MB991223: Harness set

STEP 1. Measure at amplifier connector G-19 in order to 
check the battery circuit of power supply system to the 
amplifier.
(1) Disconnect amplifier connector G-19, and measure at the 

wiring harness side.

(2) Measure the voltage between terminal 6 and ground.

• The voltage should equal approximately 12 volts (bat-

tery positive voltage).

(3) Measure the voltage between terminal 16 and ground.

• The voltage should equal approximately 12 volts (bat-

tery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

positive voltage)?
YES : Go to Step 4.
NO :  Go to Step 2.

AC204170

CONNECTORS : D-28, D-125

BR

D-28

D-125

AC204179

CONNECTOR : G-19

AM

AC204179

CONNECTOR : G-19

AV

HARNESS SIDE

3 2

1110

4

1312

1
9

5

6

1615

7

8

1817

14

AC204738 EQ

HARNESS SIDE: G-19

3 2

11 10

4

13 12

1
9

5

6

16 15

7

8

18 17

14