DTC B1034, B1035: Ambient air temperature Sensor System: 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), check data list (ETACS-ECU).
Check that the following service data display contents are normal. (Refer to DATA LIST REFERENCE TABLE ).

Item No.252: Ambient air temperature Sensor

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Go to Step 2.
STEP 2. Check of open circuit in AMB+ and AMB- line (ETACS-ECU) between ambient temperature sensor connector and ETACS-ECU connector.
Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Repair the connector(s) or wiring harness.
STEP 3. Inspection of the ambient temperature sensor
Refer to AMBIENT TEMPERATURE SENSOR .

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Replace the ambient temperature sensor.
STEP 4. Retest the system.
Q: Is the check result normal?
1. YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
2. NO: Replace the ETACS-ECU.