Inspection Procedure 3: Vehicle power does not turn ON. (Not possible with power supply mode ACC only): 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), read the diagnostic trouble code.
Check if the diagnosis trouble code is stored in the OSS-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. 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?
1. YES: Refer to DIAGNOSTIC TROUBLE CODE CHART .
2. NO: Go to Step 2.
STEP 2. Voltage measurement at ETACS-ECU connector (ACC terminal)
1. With the ETACS-ECU connector kept connected, measure by backprobing.
2. Using the scan tool (M.U.T.-III), set the forced power supply output to "IG-ACC" (Refer to FORCED POWER SUPPLY OUTPUT PROCEDURE ).
3. Measure the voltage between the ETACS-ECU connector (ACC terminal) and body ground.
  OK: System voltage
Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Replace the OSS-ECU and register the VIN (Refer to REGISTRATION WHEN REPLACING OSS-ECU ).
STEP 3. Check of the troubles
Check that the vehicle power (power supply mode ACC) can be turned ON.

Q: Is the check result normal?
1. YES: Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
2. NO: Carry out the troubleshooting relevant to the input signal of ETACS-ECU. (Refer to TROUBLE SYMPTOM CHART FOR INPUT SIGNAL .)