Mitsubishi L200. Manual - part 727

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-275

short circuit.

• <Front door speaker (LH)> Check the wire har-

ness between C-125 radio and CD player con-
nector terminal No.5, 13 and D-30 audio amplifier 
connector terminal No.29, 38.

NOTE: Prior to the wiring harness inspection, check 

intermediate connector C-15, and repair if neces-
sary.

• <Front door speaker (RH)> Check the wire har-

ness between C-125 radio and CD player termi-
nal No.6, 14 and D-30 audio amplifier connector 
terminal No.28, 37.

NOTE: Prior to the wiring harness inspection, check 

intermediate connector C-15, and repair if neces-
sary.

• <Rear door speaker (LH)> Check the wire har-

ness between C-125 radio and CD player con-
nector terminal No.2, 8 and D-30 audio amplifier 
connector terminal No.21, 30.

NOTE: Prior to the wiring harness inspection, check 

intermediate connector C-59, and repair if neces-
sary.

• <Rear door speaker (RH)> Check the wire har-

ness between C-125 radio and CD player con-
nector terminal No.1, 7 and D-30 audio amplifier 
connector terminal No.22, 31.

NOTE: Prior to the wiring harness inspection, check 

intermediate connector C-59, and repair if neces-
sary.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the wiring harness.

STEP 8. Retest the system
Check that the sound is output from the speaker.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Go to Step 9.

STEP 9. Replace the audio amplifier temporarily, 
and check the trouble symptom.
Replace the audio amplifier temporarily, and check 
that the sound is output from the speaker.

Q: Is the check result normal?

YES : 

Replace the audio amplifier.

NO : 

Replace the radio and CD player.

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-276

Inspection Procedure 4: The sound of external input are not played.

CAUTION

Before replacing the radio and CD player, ensure that the power supply circuit, the earth circuit and 
the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM
If the external input sound is not output, the radio and 
CD player, the audio communication line from the 
radio and CD player or audio adapter may have a 
problem.

PROBABLE CAUSES

• The audio adapter may be defective.

• The radio and CD player may be defective.

• Damaged harness wires and connectors

Audio Adapter Communication Circuit

Wire colour code 
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue 
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple     SI : Silver

RADIO AND CD PLAYER

AUDIO ADAPTER

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-277

DIAGNOSIS

STEP 1. Check the radio and CD player 
operation.
Check if the radio and CD player work normally and 
the sound is output.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Troubleshoot the radio and CD player 
(Refer to 

P.54A-232

).

Step 2. Check the external sounds input mode.
Check if the radio and CD player is switched to the 
external sounds input mode.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Switch to the external sounds input mode.

STEP 3. Check the audio adapter.
Check if the audio adapter works normally.(Refer to 

P.54A-296

)

Q: Is the check result normal?

YES : 

Go to step 4.

NO : 

Replace the Audio adapter.

STEP 4. Connector check: D-40 audio adapter 
connector and C-126 radio and CD player 
connector

Q: Is the check result normal?

YES : 

Go to step 5.

NO : 

Repair the defective connector.

AC903856BT

Harness side

Connector: C-126 <LHD>

AC903868

CP

Connector: C-126 <RHD>

Harness side

AC903885

Connector: D-40

AJ

Harness side

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-278

STEP 5. Check the wiring harness between D-40 
audio adapter connector terminal No. 4, 5, 6 and 
C-126 radio and CD player connector terminal 
No. 22, 32, 21.

• Check the communication line for open circuit 

and short circuit.

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connectors C-15 and D-39, and repair if neces-
sary.

Q: Is the check result normal?

YES : 

Replace the audio adapter, then go to Step 

6.

NO : 

Repair the wiring harness.

STEP 6. Check of the troubles
Check that the external input is normal.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the radio and CD player.

AC903856BT

Harness side

Connector: C-126 <LHD>

AC903868

CQ

Connectors: C-15, C-126 <RHD>

Harness side

C-126

C-126

C-15

C-15

AC903885

Connectors: D-39, D-40

AK

Harness side

D-40

D-39

D-40

D-39

AC903853

AT

Connector: C-15 <LHD>