Mitsubishi Montero (2004+). Manual - part 539

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-125

INSPECTION

M1543019500649

CIGARETTE LIGHTER CHECK

• Take out the plug, and check for a worn edge on the ele-

ment spot connection, and for shreds of tobacco or other 
material on the element.

• Using an ohmmeter, check that the element resistance 

value is 1.7 ohm.

RADIO WITH TAPE PLAYER AND CD PLAYER

GENERAL DESCRIPTION

M1544000100077

Anti-theft system

After the power supply to the radio, tape player and 
CD player has been interrupted for one hour or more, 
the anti-theft system will prevent the radio, tape 
player and CD player from working, even if the power 
supply is restored. 

RADIO WITH TAPE PLAYER AND CD PLAYER, SPEAKER AND ANTENNA 
DIAGNOSIS

INTRODUCTION TO AUDIO SYSTEM DIAGNOSIS

M1544004700082

The diagnosis for symptoms such as noise being 
emitted, no sound being played, or sound coming 
only out of one speaker (or set of speakers) is pro-
vided.

AUDIO SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1544004800302

Use these steps to plan your diagnostic strategy. Fol-
low through with each step to ensure that you have 
exhausted all possible methods of finding an audio 
system fault.
1. Gather information from the customer.

2. Verify that the condition described by the 

customer exists.

3. Find the malfunction by following the Symptom 

Chart.

4. Verify that the malfunction is eliminated.

ACX01832 AB

ELEMENT

SPOT

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-126

TROUBLE SYMPTOM CHART

M1544004900451

SYMPTOM

INSPECTION 
PROCEDURE

REFERENCE 
PAGE

When power switch is turned "ON," no power is available

1

P.54A-127

No sound. <vehicles with amplifier>

2

P.54A-132

No sound from one speaker. <vehicles without amplifier>

3

P.54A-137

No sound from one speaker. <vehicles with amplifier>

4

P.54A-156

Noise

Noise is present while moving (AM).

5

P.54A-172

Noise is present while moving (FM).

6

P.54A-172

Sound mixed with noise, only at night (AM).

7

P.54A-173

Noise is overpowering both AM and FM.

8

P.54A-174

Excessive noise on AM and FM.

9

P.54A-175

Noise is detected with engine running.

10

P.54A-175

Noise Appears during vibration or shocks.

11

P.54A-177

Noise sometimes appears on FM during traveling.

12

P.54A-178

Constant noise.

13

P.54A-179

Radio

There is noise but no reception for both AM and FM or 
no sound from AM, or no sound from FM.

14

P.54A-179

Poor reception.

15

P.54A-180

Distortion on AM and/or FM.

16

P.54A-181

Distortion on FM only.

17

P.54A-181

Using the auto select function, too few automatic 
stations are selected.

18

P.54A-182

Preset stations are erased.

19

P.54A-183

CD player, CD 
auto changer

CD can not be inserted.

20

P.54A-185

No sound (CD only).

21

P.54A-186

CD sound skips.

22

P.54A-186

Sound quality is poor.

23

P.54A-187

CD cannot be ejected.

24

P.54A-187

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-127

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: When Power Switch is Turned "ON," no Power is Available.

.

IGNITION
SWITCH (ACC)

FUSIBLE
LINK

1

JUNCTION
BLOCK

RADIO AND CD PLAYER

RELAY
BOX

RELAY
BOX

Radio and Tape Player Power Supply Circuit

AC204170

CONNECTORS : D-06, D-28

DJ

D-06

D-28

AC204173

CONNECTORS : D-208, D-221

BJ

D-208

D-221

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-128

CIRCUIT OPERATION
Power is supplied to the radio and CD player when 
the ignition switch is in the "ACC" position or "ON" 
position. When the ignition is switched on, the radio 
and CD player will return to the previous state when 
the ignition was switch off at the last time.

.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty radio and CD player 
power supply circuit system circuit.

.

TROUBLESHOOTING HINTS

• Damaged wiring harness or connector.

• Malfunction of the radio and CD player.

DIAGNOSIS

Required Special Tool:

• MB991223: Harness set

STEP 1. Check to see that the radio and CD player is 
energized when the power switch is turned ON.
(1) Turn the ignition switch to "ACC" position.
(2) Turn ON the radio and CD player power switch.
Q:  Is the radio and CD player energized when the power 

switch is turned ON?
YES : Go to Step 2.
NO :  Go to Step 5.

STEP 2. 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 3.
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