Mitsubishi Grandis. Manual - part 372

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-107

Step 2. Connector check: Radio and CD player 
connector C-20.

Q: Is radio and CD player connector C-20 in good 

condition?

YES : 

Go to Step 3.

NO : 

Repair or replace the component(s). If the 
power switch is turned on, the radio and CD 
player should operate normally.

Step 3. Voltage measurement at radio and CD 
player connector C-20 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 C-20, 

and measure at the wiring harness side.

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

(3) Measure the voltage between terminal 10 and 

earth.

OK: Battery positive voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

AC310613

BF

Connector: C-20 <LHD>

Harness side

AC310631BB

Connector: C-20 <RHD>

Harness side

AC310613

BF

Connector: C-20 <LHD>

Harness side

AC310631BB

Connector: C-20 <RHD>

Harness side

AC310507

Connector C-20 
(Harness side)

DK

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-108

Step 4. Check the wiring harness between radio 
and CD player connector C-20 (terminal 10) and 
ignition switch (ACC).

NOTE: 

Prior to the wiring harness inspection, check joint 
connector C-32 <LH drive vehicles> and 
intermediate connectors C-125, and repair if 
necessary.

Q: Are the wiring harnesses between radio and CD 

player connector C-20 (terminal 10) and ignition 
switch (ACC) in good condition?

YES : 

Go to Step 5.

NO : 

Repair or replace the damage 
component(s). If the power switch is turned 
on, the radio and CD player should operate 
normally.

Step 5. Check the assembling state of the radio 
and CD player.
NOTE: The radio and CD player is earthed to the 
instrument panel centre reinforcement directly.

Q: Is 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 properly. If the power switch is turned 
on, the radio and CD player should operate 
normally.

AC310614

BM

Connectors: C-20, C-32, C-125 <LHD>

C-125

C-125

C-32

C-32

C-20

Harness side

C-20

AC310631BB

Connector: C-20 <RHD>

Harness side

AC310628AB

Connector: C-125 <RHD>

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-109

Inspection Procedure 2: No Sound from One Speaker.

COMMENTS ON TROUBLE SYMPTOM

The cause is probably a faulty speaker circuit 
system.

POSSIBLE CAUSES

• Malfunction of speaker.

• Damaged wiring harness or connector.

• Malfunction of radio and CD player.

DIAGNOSIS PROCEDURE

Step 1. Check to see which speaker the sound is 
not output from.

Use the speaker test to determine which speaker 
does not sound.

Q:  Which speaker is not working?

TWEETER
(RH)

RADIO AND CD PLAYER

REAR DOOR
SPEAKER (LH)

REAR DOOR
SPEAKER (RH)

FRONT DOOR
SPEAKER (RH)

FRONT DOOR
SPEAKER (LH)

TWEETER
(LH)

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

NOTE

: LHD 
: RHD

Speaker System Circuit

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-110

Front door speaker (LH) : 

Go to Step 2.

Front door speaker (RH) : 

Go to Step 5.

Tweeter (LH) : 

Go to Step 8.

Tweeter (RH) : 

Go to Step 11.

Rear door speaker (LH) : 

Go to Step 14.

Rear door speaker (RH) : 

Go to Step 17.

Step 2. Check the front door speaker (LH).
(1) Remove the front door speaker (LH). Refer to 

P.54A-139

.

(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. Connector check: Front door speaker 
(LH) connector F-12 and radio and CD player 
connector C-20.

Q: Are harness connectors F-12 and C-20 in good 

condition?

YES : 

Go to Step 4.

NO : 

Repair or replace the damage 
component(s). The front door speaker (LH) 
should sound.

ACX01868

AC310613

BF

Connector: C-20 <LHD>

Harness side

AC310631BB

Connector: C-20 <RHD>

Harness side

AC311150

AG

Connectors: F-12 <LHD>

Harness side

AC310211

AG

Connectors: F-12 <RHD>

Harness side