Mitsubishi Outlander GS45X. Manual - part 1134

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-115

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU.
(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 
ETACS-ECU. (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 KOS-ECU.
(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 KOS-ECU and register the ID codes. (Refer 

to 

P.42B-15

.)

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 
ETACS-ECU. (Refer to GROUP 00, How to Cope with 
Intermittent Malfunction 

P.00-15

)

DTC U0164: A/C-ECU CAN timeout

CAUTION

• If the DTC U0164 is set, be sure to diagnose 

the CAN bus line.

• When replacing the ECU, always check that 

the communication circuit is normal.

.

DIAGNOSTIC FUNCTION

If the signal from A/C-ECU cannot be received, the 
KOS-ECU sets the DTC U0164.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The A/C-ECU may be defective.

• The KOS-ECU 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)

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-116

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.42B-13

."

(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

).

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

YES : Troubleshoot the A/C (Refer to GROUP 55A, Manual 

A/C Diagnosis 

P.55A-11

 or GROUP 55B, Auto A/C 

Diagnosis 

P.55B-8

).

NO :  Go to Step 3.

STEP 3. Using scan tool MB991958, read the other system 
diagnostic trouble code.
Check if DTC U0164 is set to the combination meter.
Q: Is the DTC set?

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

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-117

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU.
(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 A/C-ECU.
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

).

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
(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 KOS-ECU and register the ID codes. (Refer 

to 

P.42B-15

.)

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 U0184: Audio CAN timeout

CAUTION

• If the DTC U0184 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 radio and CD player or CD 
changer cannot be received, the KOS-ECU sets the 
DTC U0184.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The KOS-ECU may be defective.

• The radio and CD player or CD changer 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)

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-118

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.42B-13

."

(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

).

STEP 2. Using scan tool MB991958, read the audio 
diagnostic trouble code
Check again if the DTC is set to the audio.
Q: Is the DTC set?

YES : Troubleshoot the radio and CD player. Refer to 

GROUP 54A, Diagnosis <radio and CD player> 

P.54A-333

.

NO :  Go to Step 3.

STEP 3. Using scan tool MB991958, read the other system 
diagnostic trouble code.
Check if DTC U0184 is set to the combination meter.
Q: Is the DTC set?

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

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector