Code No. B1061,B1062: Potentiometer system for front Mode selection damper








COMMENTS ON TROUBLE SYMPTOM
This code is set when the mode selection damper control motor potentiometer does not send any signal to the A/C-ECU due to short and open circuit.

PROBABLE CAUSES

  • Malfunction of the mode selection damper control motor and potentiometer
  • Damaged the wiring harness or connectors
  • Malfunction of the A/C-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: D-08 A/C-ECU connector and D-101 front mode selection damper control motor and potentiometer connector

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

STEP 2. Check the wiring harness between D-08 A/C-ECU connector (terminals 30, 22 and 8) and D-101 front mode selection damper control motor and potentiometer connector (terminals 7, 3 and 5).

  • Check the potentiometer power supply, earth and signal line for open and short circuit.

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

STEP 3. Check the mode selection damper control motor and potentiometer.
Refer to .

Q. Is the check result normal?
Go to Step 4.
Replace the mode selection damper control motor and potentiometer.

STEP 4. M.U.T.-III diagnosis code

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