Mitsubishi Outlander GS45X. Manual - part 127

MMCS

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CHASSIS ELECTRICAL

54A-505

STEP 17. Check the wiring harness between multivision 
display connector C-10 (terminal 6) and audio amplifier 
connector D-126 (terminal 34)
NOTE: Also check intermediate connectors C-15 and C-22 for 
loose, corroded, or damaged terminals, or terminals pushed 
back in the connector. If intermediate connector C-15 or C-22 is 
damaged, repair or replace the connector as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

• Check the communication line for open circuit and short cir-

cuit.

Q: Is the wiring harness between multivision display 

connector C-10 (terminal 6) and audio amplifier 
connector D-126 (terminal 34) in good condition?
YES : Go to Step 18.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. 

STEP 18. Retest the system
Check that the audio sound is output.
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 

P.00-15

).

NO :  Go to step 19.

STEP 19. Retest the system
Temporarily replace the multivision display and check if the 
sound is output.
Q: Is the check result normal?

YES : Replace the multivision display.
NO :  Replace the audio amplifier.

MMCS

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CHASSIS ELECTRICAL

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Inspection Procedure 3: No sound is heard from one of the speakers. <Vehicles without audio 
amplifier>

CAUTION

Before replacing the multivision display, ensure that the power supply circuit, the ground circuit, and 
the communication circuit are normal. (Check that the voltage is 10 V or more.)

Speaker System Circuit

TWEETER (RH)

MULTIVISION DISPLAY

REAR DOOR SPEAKER (LH)

REAR DOOR SPEAKER (RH)

FRONT DOOR 
SPEAKER (RH)

FRONT DOOR 
SPEAKER (LH)

TWEETER (LH)

MMCS

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CHASSIS ELECTRICAL

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.

COMMENTS ON TROUBLE SYMPTOM

If the sound is not heard from one of the speakers, 
the speaker, multivision display, communication line 
from the multivision display to the speaker may have 
a problem. Also, the option coding information may 
be inconsistent.

.

PROBABLE CAUSES

• Malfunction of speaker

• Malfunctions of multivision display

• Option coding information inconsistency

• Damaged harness wires and connectors

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

AC703148 AL

Connectors: C-10, C-17, C-20, C-112, C-113

C-20

C-113 (BR)

C-17

C-10

C-112

AC702815 AN

Connectors: C-32, C-126, C-127

C-127 (BR)

C-126

C-32

AC702817 AO

Connector: D-21

ACA02660AD

Connector: D-36

AC703415AC

Connectors: E-02, E-04, E-10, E-14, E-17, E-24

E-02 (B)

E-14 (B)

E-17

E-24

E-10

E-04

MMCS

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CHASSIS ELECTRICAL

54A-508

STEP 1. Check the ETACS-ECU coding data.
Use scan tool MB991958 to diagnose the CAN bus lines.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the 

Scan Tool (M.U.T.-III) 

P.54A-458

."

(2) Turn the ignition switch to "ON" position.
(3) Operate the scan tool MB991958 to read the ETACS-ECU 

option coding information (Refer to GROUP 00, Coding 
Table 

P.00-44

).

(4) Check that the "Number of speaker" is set to "6 speakers".
Q: Is the check result normal?

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

"Number of speaker" to "6 speakers" and check the 
trouble symptom.

STEP 2. Check the MMCS service mode, CAN 
communication confirmation, and coding data.
(1) Display the CAN Communication Confirmation and Coding 

Data of the MMCS service mode. (Refer to 

P.54A-443

)

(2) Check if "6 SPEAKER (2 TWEETER)" is displayed as the 

number of installed speakers.

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Go to Step 4.

STEP 3. Check the service data log for the MMCS service 
mode.
With the service data log of MMCS service mode displayed, 
check if the service data log for SP (speaker) is displayed. 
(Refer to 

P.54A-443

.)

Q: Is the service data log for SP (speaker) displayed?

YES : Go to step 4.
NO :  Go to step 7.

STEP 4. Using scan tool MB991958, diagnose the CAN bus 
line.
Use scan tool MB991958 to diagnose the CAN bus lines.
(1) Turn the ignition switch to "ON" position.
(2) Diagnose the CAN bus line.
Q: Is the check result normal?

YES : Go to step 5.
NO :  Repair the CAN bus line.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB