DTC B1011 Outside temperature sensor low
DTC B1012 Outside temperature sensor high








DIAGNOSIS CODE SET CONDITIONS
These codes are set when a low (code No. B1011) or high (code No. B1012) to the ambient temperature sensor circuit is detected.

PROBABLE CAUSES

  • Malfunction of ambient temperature sensor
  • Damaged harness wires and connectors
  • Damaged CAN converter-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: A-51 ambient temperature sensor connector and D-252 CAN converter-ECU connector

Q. Is the check result normal?
Go to Step 2.
Repair the damaged connector.

STEP 2. Wiring harness check between A-51 ambient temperature sensor connector terminal No. 1, 2 and D-252 A/C-ECU connector terminal No. 14, 15

  • Check the input line for open or short circuit.
note Prior to the wiring harness inspection, check intermediate connector D-239, and repair if necessary.

Q. Is the check result normal?
Go to Step 3.
Repair the wiring harness.

STEP 3. Ambient temperature sensor check
Refer to .

Q. Is the check result normal?
Go to Step 4.
Replace the ambient temperature sensor.

STEP 4. Diagnosis code recheck

Q. Is the diagnosis code set?
Replace the CAN converter-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)