Mitsubishi Outlander GS45X. Manual - part 167

SATELLITE RADIO TUNER

TSB Revision

CHASSIS ELECTRICAL

54A-665

DTC U0154: OCM (occupant classification-ECU) CAN timeout

CAUTION

If DTC U0154 is set, be sure to diagnose the CAN 
bus line.

CAUTION

When replacing the ECU, always check that the 
communication circuit is normal.

.

DIAGNOSTIC FUNCTION

When the signals from occupant classification-ECU 
cannot be received, the satellite radio tuner sets DTC 
U0154.

.

JUDGMENT CRITERIA

With the ignition switch in the ON position, system 
voltage between 10 

− 16 volts (data from 

ETACS-ECU), power supply fuse (IOD fuse) is OK, 
or odometer value is 80.5 km (50 miles) or more, and 
the communications with occupant classifica-
tion-ECU cannot be established for 2,500 ms or 
more, the satellite radio tuner determines that a prob-
lem has occurred.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The satellite radio tuner may be defective.

• The occupant classification-ECU may be defec-

tive.

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-655

."

(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-17

).

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

SATELLITE RADIO TUNER

TSB Revision

CHASSIS ELECTRICAL

54A-666

STEP 2. Using scan tool MB991958, read the occupant 
classification-ECU diagnostic trouble code.
Check if DTC is set to the occupant classification-ECU.
Q: Is the DTC set?

YES : Troubleshoot the SRS (Refer to GROUP 52B, 

Diagnosis 

P.52B-344

).

NO :  Go to Step 3.

STEP 3. Using scan tool MB991958, read the A/C-ECU 
diagnostic trouble code.
Check if the DTC U0154 is set to the A/C-ECU.
Q: Is the DTC set?

YES : Go to Step 4.
NO :  Go to Step 5.

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the satellite radio tuner.
(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 occupant classification-ECU.
NO :  The trouble can be an intermittent malfunction such 

as a poor connection or open circuit in the CAN bus 
lines between the occupant classification-ECU and 
the satellite radio tuner (Refer to GROUP 00, How to 
Cope with Intermittent Malfunction 

P.00-15

).

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the satellite radio tuner.
(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 satellite radio tuner.
NO :  The trouble can be an intermittent malfunction such 

as a poor connection or open circuit in the CAN bus 
lines between the occupant classification-ECU and 
the satellite radio tuner (Refer to GROUP 00, How to 
Cope with Intermittent Malfunction 

P.00-15

).

SATELLITE RADIO TUNER

TSB Revision

CHASSIS ELECTRICAL

54A-667

DTC U0155: Meter CAN timeout

CAUTION

If DTC U0155 is set in the satellite radio tuner, 
diagnose the CAN main bus line.

CAUTION

Whenever the satellite radio tuner is replaced, 
ensure that the communication circuit is normal.

.

DIAGNOSTIC FUNCTION

When the signals from combination meter cannot be 
received, the satellite radio tuner sets DTC U0155.

.

JUDGMENT CRITERIA

With the ignition switch in the ON position, system 
voltage between 10 

− 16 volts (data from 

ETACS-ECU), power supply fuse (IOD fuse) is OK, 
or odometer value is 80.5 km (50 miles) or more, and 
the communications with combination meter cannot 
be established for 2,500 ms or more, the satellite 
radio tuner determines that a problem has occurred.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The satellite radio tuner may be defective.

• The combination meter 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

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-655

."

(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-17

).

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

SATELLITE RADIO TUNER

TSB Revision

CHASSIS ELECTRICAL

54A-668

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

YES :  Go to Step 3.
NO :   Diagnose the combination meter (Refer to 

combination meter, Diagnosis 

P.54A-34

).

STEP 3. Using scan tool MB991958, read the A/C-ECU 
diagnostic trouble code.
Check if the DTC U0155 is set to the A/C-ECU.
Q: Is the DTC set?

YES : Go to Step 4.
NO :  Go to Step 5.

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the satellite radio tuner.
(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 combination meter.
NO :  The trouble can be an intermittent malfunction such 

as a poor connection or open circuit in the CAN bus 
lines between the combination meter and the satellite 
radio tuner (Refer to GROUP 00, How to Cope with 
Intermittent Malfunction 

P.00-15

).

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the satellite radio tuner.
(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 satellite radio tuner.
NO :  The trouble can be an intermittent malfunction such 

as a poor connection or open circuit in the CAN bus 
lines between the combination meter and the satellite 
radio tuner (Refer to GROUP 00, How to Cope with 
Intermittent Malfunction 

P.00-15

).