Mitsubishi Outlander GS45X. Manual — part 126

MMCS

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CHASSIS ELECTRICAL

54A-501

STEP 6. 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 7.

STEP 7. 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 8.

STEP 8. Check the service data log for the MMCS service
mode.
(1) Display the service data log for the MMCS service mode.

(Refer to

P.54A-443

)

(2) Check if the service data log for drive and HDD is displayed.
Q: Is the service data log displayed?

YES (The service data log for drive is displayed.) :

Perform Inspection Procedure 8 "CD/DVD cannot be
Played."(Refer to

P.54A-539

.) or Inspection

Procedure 9 "Image of a DVD is Played, but no
Sound is Played." (Refer to

P.54A-541

.) Go to Step 9.

YES (The service data log for HDD is displayed.) :

Abnormalities relating to high or low temperature may
be present. Check if the multivision display can output
the sound at the operable temperature. If it cannot
output the sound, go to Step 9.

YES (The service data log for AMP is displayed.) : Go to

Step 9.

NO : Go to Step 9.

STEP 9. Perform "Network/Connect Line Check" in the
MMCS service mode.
(1) Display "Network/Connect Line Check" in the MMCS

service mode. (Refer to

P.54A-443

)

(2) Check if "DVD Drive OK" is displayed.
(3) Check if "HDD Drive OK" is displayed.
(4) Check if "Premium Audio OK" is displayed.
Q: Is the check result normal?

YES : Go to Step 18.
NO : Go to Step 10.

MMCS

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CHASSIS ELECTRICAL

54A-502

STEP 10. Check audio amplifier connector D-126 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is audio amplifier connector D-126 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 ground circuit to the rear monitor.
Measure the resistance at audio amplifier connector D-126.
(1) Disconnect audio amplifier connector D-126, and measure

the resistance available at the wiring harness side of the
connector.

(2) Measure the resistance between terminal 24 and ground.

OK: The resistance should be 2 ohms or less

(3) Measure the resistance between terminal 31 and ground.

OK: The resistance should be 2 ohms or less

(4) Measure the resistance between terminal 32 and ground.

OK: The resistance should be 2 ohms or less

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 13.
NO : Go to Step 12.

AC702818 BB

Harness side: D-126

AC702818 BC

Harness side: D-126

AC702818 BD

Harness side: D-126

MMCS

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CHASSIS ELECTRICAL

54A-503

STEP 12. Check the wiring harness between audio
amplifier connector D-126 (terminal 24, 31, 32) and ground.

• Check the ground wire for open circuit.

Q: Is the wiring harness between audio amplifier connector

D-126 (terminal 24, 31, 32) and ground in good
condition?
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 : 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 13. Check the power supply circuit to the
ETACS-ECU. Measure the voltage at audio amplifier
connector D-126.
(1) Disconnect audio amplifier connector D-126, and measure

the voltage available at the wiring harness-side connector.

(2) Measure the voltage between terminal 25 and ground.

OK: The voltage should measure approximately 12
volts (battery positive voltage).

(3) Measure the voltage between terminal 35 and ground.

OK: The voltage should measure approximately 12
volts (battery positive voltage).

(4) Measure the voltage between terminal 36 and ground.

OK: The voltage should measure approximately 12
volts (battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 15.
NO : Go to Step 14.

AC702831AU

Harness side: D-126

AC702831AT

Harness side: D-126

AC702831AV

Harness side: D-126

MMCS

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CHASSIS ELECTRICAL

54A-504

STEP 14. Check the wiring harness between audio
amplifier connector D-126 (terminal 25, 35, 36) and fusible
link (36).
NOTE: Also check intermediate connector C-129 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-129 is damaged, repair
or replace the connector as described in GROUP 00E, Harness
Connector Inspection

P.00E-2

.

• Check the power supply line for open circuit and short cir-

cuit.

Q: Is the wiring harness between audio amplifier connector

D-126 (terminal 25, 35, 36) and fusible link (36) in good
condition?
YES : Go to Step 15.
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 15. Check multivision display connector C-06, C-10
and audio amplifier connector D-127 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is multivision display connector C-06 and audio

amplifier connector D-127 in good condition?
YES : Go to Step 16.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

.

STEP 16. Check the wiring harness between multivision
display connector C-06 (terminal 82) and audio amplifier
connector D-127 (terminal 3)
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-06 (terminal 82) and audio amplifier
connector D-127 (terminal 3) in good condition?
YES : Go to Step 17.
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.