Mitsubishi Evolution X. Manual - part 1049

SATELLITE RADIO TUNER

TSB Revision

CHASSIS ELECTRICAL

54A-557

.

COMMENTS ON TROUBLE SYMPTOM

There may be a failure in the wiring harness from the 
satellite radio tuner to the radio and CD player <vehi-
cles with radio and CD player> or multivision display 
<vehicles with MMCS>, its respective connector(s), 
the satellite radio tuner, the CD changer <vehicles 
with radio and CD player> or the multivision display 
<vehicles with MMCS>.

.

PROBABLE CAUSES

• The satellite radio tuner may be defective.

• The radio and CD player <vehicles with radio and 

CD player> or multivision display <vehicles with 
MMCS> may be defective.

• 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

Satellite Radio Tuner Communication Circuit <Vehicles with MMCS>

MULTIVISION
DISPLAY

SATELLITE RADIO TUNER

AC708951BW

Connectors: C-09, C-18, C-109, C-110

C-09

C-109, 
C-110

C-18

SATELLITE RADIO TUNER

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CHASSIS ELECTRICAL

54A-558

STEP 1. Check whether AM or FM broadcast frequency is 
received.
Check whether AM or FM broadcast frequency is received.
Q: Is AM or FM broadcast frequency received?

YES : Go to Step 2.
NO :  Diagnose the radio <vehicles with radio and CD 

player> or the multivision display <vehicles with 
MMCS> (Refer to 

P.54A-317

 <vehicles with radio and 

CD player> or 

P.54A-408

 <vehicles with MMCS>).

STEP 2. Using scan tool MB991958, diagnose the CAN bus 
line.

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-537

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES <vehicles with radio and CD player> : Go to Step 3.
YES <vehicles with MMCS> : Go to Step 6.
NO <vehicles with radio and CD player or MMCS> : 

Repair the CAN bus line. (Refer to GROUP 54C, 
Diagnosis 

P.54C-14

).

STEP 3. Check satellite radio tuner connector C-18 and 
radio and CD player connector C-109 for loose, corroded 
or damaged terminals, or terminals pushed back in the 
connector.
Q: Is satellite radio tuner connector C-18 or radio and CD 

player connector C-109 in good condition?
YES : Go to Step 4.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

SATELLITE RADIO TUNER

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CHASSIS ELECTRICAL

54A-559

STEP 4. Check the wiring harness between satellite radio 
tuner connector C-18 (terminal 6, 14, 7) and radio and CD 
player connector C-109 (terminal 15, 6, 5).

• Check the communication lines for open circuit or short cir-

cuit.

Q: Is the wiring harness between satellite radio tuner 

connector C-18 (terminal 6, 14, 7) and radio and CD 
player connector C-109 (terminal 15, 6, 5) in good 
condition?
YES : Go to Step 5.
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 5. Substitute a known good radio and CD player, and 
check the trouble symptom.
Check whether satellite radio broadcast can be received.
Q: Can a satellite radio be received?

YES : Replace the radio and CD player.
NO :  Replace the satellite radio tuner.

STEP 6. Check satellite radio tuner connector C-18 and 
multivision display connector C-09 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Is satellite radio tuner connector C-18 or multivision 

display connector C-09 in good condition?
YES : Go to Step 7.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

SATELLITE RADIO TUNER

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CHASSIS ELECTRICAL

54A-560

STEP 7. Check the wiring harness between satellite radio 
tuner connector C-18 (terminal 6, 14, 7) and multivision 
display connector C-09 (terminal 75, 77, 76).

• Check the communication lines for open circuit and short 

circuit.

NOTE: Also check intermediate connector C-110 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-110 is damaged, repair 
or replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between satellite radio tuner 

connector C-18 (terminal 6, 14, 7) and multivision 
display connector C-09 (terminal 75, 77, 76) 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. Substitute a known good multivision display, and 
check the trouble symptom.
Check whether satellite radio broadcast can be received.
Q: Can a satellite radio be received?

YES : Replace the multivision display.
NO :  Replace the satellite radio tuner.