Mitsubishi Evolution X. Manual - part 1013

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CHASSIS ELECTRICAL

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STEP 7. Check the wiring harness between ETACS-ECU 
connector C-317 (terminal 1) and multivision display 
connector C-13 (terminal 17) or multivision display 
connector C-12 (terminal 21).

• Check the power supply lines (battery supply) for open cir-

cuit and short circuit.

NOTE: Also check intermediate connector C-108, C-106 for 
loose, corroded, or damaged terminals, or terminals pushed 
back in the connector. If intermediate connector C-108, C-106 
is damaged, repair or replace the connector as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between ETACS-ECU connector 

C-317 (terminal 1) and multivision display connector 
C-13 (terminal 17) or multivision display connector C-12 
(terminal 21) in good condition?
YES : Go to Step 8.
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 8. Using scan tool MB991958, check data list.
Check the input signal of ACC relay.

• Turn the ignition switch to the ACC position.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : Go to Step 9.
NO :  Refer to GROUP 54A, ETACS, Diagnosis 

− Inspection 

Procedure 1 "The ignition switch (ACC) signal is not 
received 

P.54A-640

."

STEP 9. Check ETACS-ECU connector C-315 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connector C-315 in good condition?

YES : Go to Step 10.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Item No.

Item name

Normal 
conditions

Item 288

ACC switch

ON

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STEP 10. Check the power supply circuit to the multivision 
display. Measure the voltage at multivision display 
connector C-13.
(1) Disconnect the connector, and measure at the wiring 

harness-side connector.

(2) Measure the voltage between multivision display connector 

C-13 terminal 14 and ground.

OK: Battery voltage

Q: Is the measured voltage battery voltage?

YES : Go to Step 12.
NO :  Go to Step 11.

STEP 11. Check the wiring harness between multivision 
display connector C-13 (terminal 14) and ETACS-ECU 
connector C-315 (terminal 9).

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

cuit.

NOTE: Also check intermediate connector C-108 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-108 is damaged, repair 
or replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between multivision display 

connector C-13 (terminal 14) and ETACS-ECU connector 
C-315 (terminal 9) in good condition?
YES : Go to Step 12.
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 12. Retest the system
Check if the multivision display power is turned ON.
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 :  Replace the multivision display.

AC709325 AM

Harness side: C-13

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Inspection Procedure 2: No sound is heard. <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. (Check that the voltage is 10 V or more.)

Multivision Display System Circuit

RELAY
BOX

AUDIO AMPLIFIER

FUSIBLE
LINK

36

MULTIVISION DISPLAY

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COMMENTS ON TROUBLE SYMPTOM

If the audio sound is not output, the multivision dis-
play, audio amplifier, or power supply circuit of audio 
amplifier may have a problem, or the option coding 
information may be inconsistent.

.

PROBABLE CAUSES

• The multivision display may be defective

• The audio amplifier may be defective

• 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

AC708951BN

C-09

C-24

Connectors: C-09, C-13, C-24, C-110

C-13 (GR)

C-110

AC708950

Connector: C-47

AE

AC708955AF

Connector: D-25

D-25 (B)

AC708954 AR

Connectors: D-29, D-30

D-30

D-29