Mitsubishi Evolution X. Manual - part 1031

HANDS-FREE CELLULAR PHONE SYSTEM

TSB Revision

CHASSIS ELECTRICAL

54A-485

STEP 2. Using scan tool MB991958, read the radio and CD 
player diagnostic trouble code.
Check if DTC is set to the radio and CD player.
Q: Is the DTC set?

YES : Troubleshoot the radio and CD player (Refer to 

P.54A-288

).

NO :  Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the diagnostic trouble code is set to the hands 
free module.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(3) Check if DTC is set.
Q: Is the DTC set?

YES : Replace the hands free module.
NO :  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

).

DTC U0195: Satellite radio CAN timeout

CAUTION

• If DTC U0195 is set, be sure to diagnose the 

CAN bus line.

• When replacing the ECU, always check that 

the communication circuit is normal.

.

DIAGNOSTIC FUNCTION

When the signals from satellite radio tuner cannot be 
received, the hands free module sets DTC U0195.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The hands free module may be defective.

• The satellite radio tuner may be defective.

DIAGNOSIS

Required Special Tools:

•  MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

HANDS-FREE CELLULAR PHONE SYSTEM

TSB Revision

CHASSIS ELECTRICAL

54A-486

STEP 1. 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-459

."

(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 : Go to Step 2.
NO :  Repair the CAN bus line. (Refer to GROUP 54C, 

Diagnosis 

P.54C-14

).

STEP 2. Using scan tool MB991958 read the satellite radio 
tuner diagnostic trouble code.
Check whether a satellite radio tuner DTCs are set or not.
(1) Turn the ignition switch to the "ON" position.
(2) Check for satellite radio tuner DTCs.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Diagnose the satellite radio tuner.
NO :   Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the hands free module.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the hands free module.
NO :  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

).

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

HANDS-FREE CELLULAR PHONE SYSTEM

TSB Revision

CHASSIS ELECTRICAL

54A-487

DTC U0245 AND CAN timeout

CAUTION

• If DTC U0245 is set, be sure to diagnose the 

CAN bus line.

• When replacing the ECU, always check that 

the communication circuit is normal.

.

DIAGNOSTIC FUNCTION

When the signals from CAN box unit (multivision dis-
play) cannot be received, the hands free module sets 
the diagnostic trouble code No. U0245.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The hands free module may be defective.

• The CAN box unit may be defective.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicles Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

STEP 1. 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-459

."

(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 : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C, 

Diagnosis 

P.54C-14

).

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

HANDS-FREE CELLULAR PHONE SYSTEM

TSB Revision

CHASSIS ELECTRICAL

54A-488

STEP 2. Using scan tool MB991958, read the CAN box unit 
diagnostic trouble code
Check the DTC is set to the CAN box unit .
Q: Is the DTC set?

YES : Troubleshoot the CAN box unit (Refer to MMCS 

− 

Diagnostic Trouble Code Chart 

P.54A-384

).

NO :  Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the diagnostic trouble code is set to the hands 
free module.
(1) Erase the diagnostic trouble code.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(3) Check if DTC is set.
Q: Is the diagnostic trouble code set?

YES : Replace the hands free module.
NO :  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

).

TROUBLE SYMPTOM CHART

M1546001800570

NOTE: Several Bluetooth

™

 cellular phones may not 

be compatible with the hands free module

Inspection 
Procedure No.

Trouble symptom

Reference 
page

1

Hands free cellular phone system does not work normally.

P.54A-489

2

During the conversation with the hands free cellular phone system, the 
speaker’s voice cannot be heard by the other party.

P.54A-497

3

During the conversation with the hands free cellular phone system, the voice 
of other party cannot be heard.

P.54A-500

4

Even when the steering wheel voice control switch is operated, the 
conversation is not possible.

P.54A-501

5

The cellular phone is not recognized or the connection cannot be established.

P.54A-506

6

Steering wheel voice control switch illumination does not come on.

P.54A-507

7

Check the hands free module power supply circuit.

P.54A-511