Inspection Procedure A-2: Power liftgate automatic operation and easy closer system do not work normally: 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. Keyless entry system operation check.
Check that the door lock/unlock is performed when the keyless operation key is operated.

Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Refer to TROUBLE SYMPTOM CHART .
STEP 2. 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 3.
- NO: Repair the CAN bus line (Refer to DIAGNOSIS ).
STEP 3. Using scan tool (M.U.T.-III), read the other system diagnostic trouble code.
Check if any DTC is stored in the ETACS-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. Check if DTC is stored.
4. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
- YES: Perform troubleshooting for the ETACS-ECU (Refer to TROUBLESHOOTING ).
- NO: Go to Step 4.
STEP 4. Using scan tool (M.U.T.-III), read the diagnostic trouble code.
1. Operate the power liftgate.
2. Check whether a diagnostic trouble code is stored in the power liftgate control unit.
Q: Is the DTC stored?
- YES: Refer to DIAGNOSTIC TROUBLE CODE TABLE .
- NO: Go to Step 5.

STEP 5. Using scan tool (M.U.T.-III), check data list.

Check the signals related to the power liftgate operation.

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).

Connect scan tool (M.U.T.-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Turn the power supply mode of the engine switch to OFF.

Turn the ignition switch to the LOCK (OFF) position.

Item No.	Item name	Normal conditions
Item 12	ECU power supply voltage	System voltage

OK: Normal conditions are displayed for all the items.

Q: Is the check result normal?

YES: Go to Step 6.
NO: Refer to INSPECTION PROCEDURE A-1 "POWER SUPPLY VOLTAGE ABNORMALITY OF POWER LIFTGATE CONTROL UNIT" .

STEP 6. Check of the troubles
Check that the power liftgate and the easy closer system work normally.

Q: Is the check result normal?
- YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
- NO: Replace the power liftgate control unit.