Code No.B10C0: Interior temperature sensor system (short circuit) <Vehicles with automatic air conditioner>
Code No.B10C1: Interior temperature sensor system (open circuit) <Vehicles with automatic air conditioner>


COMMENTS ON TROUBLE SYMPTOM
This code is set when the interior temperature sensor circuit is short (Code No.B10C0) or is open (Code No.B10C1)

PROBABLE CAUSES

  • Malfunction of the interior temperature sensor
  • Damaged wiring harness or connectors
  • Malfunction of the A/C control panel

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-220 interior temperature sensor connector and C-216 A/C control panel connector

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

STEP 2. Check the wiring harness between C-216 A/C control panel (terminals 6 and 13) and C-220 interior temperature sensor connector (terminals 1 and 2).

  • Check the sensor signal line and earth line for open or short circuit.

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

STEP 3. Check the interior temperature sensor.

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

STEP 4. Check whether the diagnosis code is reset.

Q. Is the diagnosis code set?
Replace the A/C control panel.
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction).