DTC U0164: A/C-ECU CAN timeout: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III) ."
2. Turn the power supply mode of the engine switch to ON.
3. Diagnose the CAN bus line.
4. Turn the power supply mode of the engine switch to OFF.
Q: Is the CAN bus line found to be normal?
1. YES: Go to Step 2.
2. NO: Repair the CAN bus line. (Refer to DIAGNOSIS ).
STEP 2. Using scan tool (M.U.T.-III), read the other system diagnostic trouble code.
Check again if the DTC is stored in the A/C-ECU.

CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III) ."
2. Erase the DTC.
3. Turn the power supply mode of the engine switch to ON.
4. Check if DTC is stored.
5. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
1. YES: Perform troubleshooting for the A/C-ECU (Refer to DIAGNOSTIC TROUBLE CODE TABLE ). On completion, go to Step 3.
2. NO: Go to Step 3.
STEP 3. Using scan tool (M.U.T.-III), read the other system diagnostic trouble code.
Check if the DTC U0164 is stored in the combination meter.

CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III) ."
2. Erase the DTC.
3. Turn the power supply mode of the engine switch to ON.
4. Check if DTC is stored.
5. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
1. YES: Go to Step 4.
2. NO: Go to Step 5.
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is stored in the KOS-ECU.
1. Erase the DTC.
2. Turn the power supply mode of the engine switch from OFF to ON.
3. Check if DTC is stored.
4. Turn the power supply mode of the engine switch from ON to OFF.
Q: Is the DTC stored?
1. YES: Replace the A/C-ECU.
2. NO: A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the A/C-ECU and the KOS-ECU (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is stored in the KOS-ECU.
1. Erase the DTC.
2. Turn the power supply mode of the engine switch from OFF to ON.
3. Check if DTC is stored.
4. Turn the power supply mode of the engine switch from ON to OFF.
Q: Is the DTC stored?
1. YES: Replace KOS-ECU and register the ID codes (Refer to ON-VEHICLE SERVICE < KOS-ECU > ).
2. NO: A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the A/C-ECU and the KOS-ECU (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).