Inspection Procedure 1: Scan tool (M.U.T.-III) cannot communicate with ETACS-ECU: 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 ignition switch to the "LOCK" (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 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?
1. YES: Go to Step 2
2. NO: Repair the CAN bus line (Refer to DIAGNOSIS ). On completion, go to Step 3.
STEP 2. Check the power supply circuit and the ground circuit to ETACS-ECU.
Refer to MALFUNCTION OF ETACS-ECU POWER SUPPLY CIRCUIT

Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Repair the power supply circuit and the ground circuit to ETACS-ECU.
STEP 3. Retest the system
Check if scan tool (M.U.T.-III) can communicate with ETACS-ECU.

Q: Is the check result normal?
1. YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
2. NO: Replace ETACS-ECU and register the ID codes (Refer to HOW TO REGISTER KEY ID ).