Mitsubishi Evolution X. Manual - part 993

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

54A-333

or replace the connector as described in GROUP 00E, Har-
ness Connector Inspection 

P.00E-2

.

• <Tweeter (RH)> Check the wiring harness between tweeter 

(RH) connector E-04 (terminal 1, 2) and radio and CD 
player connector C-107 (terminal 36, 26).
NOTE: Also check joint connector C-101 and intermediate 
connector C-117 for loose, corroded, or damaged terminals, 
or terminals pushed back in the connector. If joint connector 
C-101 or intermediate connector C-117 is damaged, repair 
or replace the connector as described in GROUP 00E, Har-
ness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between the speaker or tweeter 

connector terminal and the radio and CD player 
connector terminal in good condition?
YES : Replace the radio and CD player.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Inspection Procedure 3: No sound is heard from one of the speakers. <Vehicles with audio amplifier>

CAUTION

Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communi-
cation circuit are normal.

AUDIO AMPLIFIER

RADIO AND CD CHANGER

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

54A-334

Speaker System Circuit

AUDIO AMPLIFIER

TWEETER
(LH)

TWEETER
(RH)

FRONT DOOR 
SPEAKER (LH)

FRONT DOOR 
SPEAKER (RH)

REAR DOOR
SPEAKER
(LH)

REAR DOOR
SPEAKER
(RH)

SUB WOOFER

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

54A-335

.

COMMENTS ON TROUBLE SYMPTOM

If the sound is not heard from one of the speakers, 
the speaker, radio and CD player, audio amplifier, 
communication line from the radio and CD player to 
the audio amplifier, or communication line from the 
audio amplifier to the speaker may have a problem. 
Also, the option coding information may be inconsis-
tent.

.

PROBABLE CAUSES

• The speaker may be defective

• The radio and CD player may be defective

• The audio amplifier may be defective

• Option coding information inconsistency

• Damaged harness wires and connectors

AC708951BJ

C-116

C-23

Connectors: C-23, C-24, C-107, C-116, C-117

C-107

C-117 (BR)

C-24

AC708950BH

Connectors: C-128, C-129

 

C-128

C-129 (BR)

AC708954 AS

Connectors: D-01, D-29, D-30

D-30

D-29

D-01

AC708955AV

Connectors: D-16, D-24

D-16

D-24

AC608167 AB

Connectors: E-02, E-13

E-02 (B)

E-13

AC608168 AJ

Connectors: E-04, E-11

E-04 (B)

E-11

AC608170 AI

Connector: E-22

AC608169AH

Connector: E-23

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

54A-336

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. ETACS-ECU coding data check.
(1) Operate scan tool MB991958 to read the ETACS-ECU 

option coding information (Refer to GROUP 00, Coding 
Table 

P.00-39

).

(2) Check that the "Speaker" is set to "Premium."
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Operate scan tool MB991958 to set the option coding 

"Speaker" to "Premium," and check the trouble 
symptom.

STEP 2. Checking with audio speaker check
Perform the audio speaker check, and check which speaker 
does not output the sound (Refer to 

P.54A-573

).

NOTE: In the following procedure, check the speaker or 
tweeter that is abnormal.
Q: Is the check result normal?

YES (normal for all) : The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to use 

Troubleshooting/inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-15

).

NO (Either a speaker is abnormal) : Go to Step 3.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB