Mitsubishi Outlander GS45X. Manual - part 128

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-509

STEP 5. Using scan tool MB991958, read the CAN box unit 
diagnostic trouble code.
Check again if the DTC is set to the CAN box unit.
Q: Is the DTC set?

YES : Troubleshoot the MMCS (Refer to 

P.54A-460

).

NO :  Go to Step 6.

STEP 6. Using scan tool MB991958, read the ETACS-ECU 
diagnostic trouble code.
Check if the diagnostic trouble code is set to the ETACS-ECU.
Q: Is the DTC set?

YES : Diagnose the ETACS-ECU (Refer to GROUP 54A 

− 

ETACS-ECU 

− Troubleshooting 

P.54A-732

).

NO :  Go to Step 7.

STEP 7. Checking with speaker test.
Perform the speaker test, and check which speaker does not 
output the sound. Refer to 

P.54A-443

.

Q: Is the check result normal?

YES <normal for all> : The trouble can be an intermittent 

malfunction (Refer to GROUP 00, How to Cope with 
Intermittent Malfunction 

P.00-15

).

NO <abnormal for all> : Refer to Inspection Procedure 2 

"No sound is heard" 

P.54A-494

.

NO <only front door speaker (RH) is abnormal> : Go to 

Step 8.

NO <only front door speaker (LH) is abnormal> : Go to 

Step 12.

NO <only rear door speaker (RH) is abnormal> : Go to 

Step 16.

NO <only rear door speaker (LH) is abnormal> : Go to 

Step 20.

NO <only tweeter (RH) is abnormal> : Go to Step 24.
NO <only tweeter (LH) is abnormal> : Go to Step 28.

STEP 8. Check front door speaker (RH) connector E-04 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is front door speaker (RH) connector E-04 in good 

condition?
YES : Go to Step 9.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-510

STEP 9. Check the front door speaker (RH).
(1) Remove the front door speaker (RH). Refer to 

P.54A-692

.

(2) Check that the front door speaker (RH) outputs the noise 

when the voltage of five volts is applied to the front door 
speaker (RH) connector terminal.

Q: Does the front door speaker (RH) output the noise?

YES : Go to Step 10.
NO :  Replace the front door speaker (RH).

STEP 10. Check multivision display connector C-10 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is multivision display connector C-10 in good 

condition?
YES : Go to Step 11.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 11. Check the wiring harness between multivision 
display connector C-10 (terminal 7, 15) and front door 
speaker (RH) connector E-04 (terminal 2, 1).
NOTE: Also check intermediate connectors C-17 and C-112 for 
loose, corroded, or damaged terminals, or terminals pushed 
back in the connector. If intermediate connector C-17 or C-112 
is damaged, repair or replace the connector as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

• Check the communication lines for open circuit and short 

circuit.

Q: Is the wiring harness between multivision display 

connector C-10 (terminal 7, 15) and front door speaker 
(RH) connector E-04 (terminal 2, 1) in good condition?
YES : Check the trouble symptom, and go to Step 32.
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. 

AC703723AB

5 volts

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-511

STEP 12. Check front door speaker (LH) connector E-17 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is front door speaker (LH) connector E-17 in good 

condition?
YES : Go to Step 13.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 13. Check the front door speaker (LH).
(1) Remove the front door speaker (LH). Refer to 

P.54A-692

.

(2) Check that the front door speaker (LH) outputs the noise 

when the voltage of five volts is applied to the front door 
speaker (LH) connector terminal.

Q: Does the front door speaker (LH) output the noise?

YES : Go to Step 14.
NO :  Replace the front door speaker (LH).

STEP 14. Check multivision display connector C-10 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is multivision display connector C-10 in good 

condition?
YES : Go to Step 15.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

AC703723AB

5 volts

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-512

STEP 15. Check the wiring harness between multivision 
display connector C-10 (terminal 3, 12) and front door 
speaker (LH) connector E-17 (terminal 2, 1).
NOTE: Also check intermediate connectors C-20 and C-126 for 
loose, corroded, or damaged terminals, or terminals pushed 
back in the connector. If intermediate connector C-20 or C-126 
is damaged, repair or replace the connector as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

• Check the communication lines for open circuit and short 

circuit.

Q: Is the wiring harness between multivision display 

connector C-10 (terminal 3, 12) and front door speaker 
(LH) connector E-17 (terminal 2, 1) in good condition?
YES : Check the trouble symptom, and go to Step 32.
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 16. Check rear door speaker (RH) connector E-24 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is rear door speaker (RH) connector E-24 in good 

condition?
YES : Go to Step 17.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 17. Check the rear door speaker (RH).
(1) Remove the rear door speaker (RH). Refer to 

P.54A-692

.

(2) Check that the rear door speaker (RH) outputs the noise 

when the voltage of five volts is applied to the rear door 
speaker (RH) connector terminal.

Q: Does the rear door speaker (RH) output the noise?

YES : Go to Step 18.
NO :  Replace the rear door speaker (RH).

AC703723AB

5 volts