DTC U0164: A/C CAN time-out: 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 THE 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?
- YES: Go to Step 2.
- NO: Repair the CAN bus line. (Refer to DIAGNOSIS ).
STEP 2. Using scan tool (M.U.T.-III), read the combination meter diagnostic trouble code.
Check if 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 THE SCAN TOOL (M.U.T.-III)
2. Turn the power supply mode of the engine switch to ON.
3. Diagnose the DTC.
4. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
- YES: Troubleshoot the A/C-ECU. (Refer to DIAGNOSIS .)
- NO: Go to Step 3.
STEP 3. Using scan tool (M.U.T.-III), read the other system diagnostic trouble code.
Check if DTC U0164 is stored in the KOS-ECU, OSS-ECU, combination meter, ETACS-ECU, MMCS or radio and CD player.

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 THE 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?
- YES: Go to Step 4.
- NO: Go to Step 5.
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is stored in the power liftgate control unit.
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?
- YES: Replace the A/C-ECU.
- NO: Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is stored in the power liftgate control unit.
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?
- YES: Replace the power liftgate control unit.
- NO: Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).