Code No. B1121 Outside/inside air selection damper and potentionmeter (high input)
















DIAGNOSIS CODE SET CONDITIONS




PROBABLE CAUSES



  • Outside/inside air selection damper motor and potentiometer
  • Damaged harness wires and connectors
  • Malfunction of compressor & heater controller

DIAGNOSIS PROCEDURE


STEP 1. Connector check: B-10-3 outside/inside air selection damper motor and potentiometer connector, C-113, C-101 compressor & heater controller connector


Q. Is the check result normal?

Go to Step 2.
Repair the damaged connector.

STEP 2. Check the wiring harnesses between B-22-3 outside/inside air selection damper motor and potentiometer connector terminal No. 3 and C-115 compressor & heater controller connector terminal No. 24, and B-22-3 outside/inside and potentiometer connector terminal No. 5, 7 and C-101 A/C control unit connector terminal No. 20, 19.



  • Check the input line for open circuit.
note Before checking the wiring harness, check the heater unit and blower assembly connector B-10 and repair it if necessary.

Q. Is the check result normal?

Go to Step 3.
Repair the wiring harness.

STEP 3. Check the outside/inside and potentiometer.


Refer to .

Q. Is the check result normal?

Go to Step 4.
Replace the air recirculation/fresh air selection damper motor and potentiometer.

STEP 4. Check whether the diagnosis code is reset.


Q. Is the diagnosis code set?

Replace the compressor & heater controller.
Intermittent malfunction. Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, - How to Cope with Intermittent Malfunctions .)