DTC 22


BHE070201038W16

DTC 22

Airflow mode actuator (potentiometer) system inspection

POSSIBLE CAUSE

• Airflow mode actuator malfunction
• Open circuit in wiring harness between A/C amplifier and airflow mode actuator
• Short circuit in wiring harness between A/C amplifier (terminal 2G) and air mix actuator (terminal E)

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
• Inspect the airflow mode actuator. (See AIRFLOW MODE ACTUATOR INSPECTION.)
• Is it normal?
Yes
Go to the next step.
No
Replace the airflow mode actuator. (See AIRFLOW MODE ACTUATOR REMOVAL/INSTALLATION.)
2
• Disconnect the A/C amplifier connector (16-pin) and the airflow mode actuator connector.
• Is there an open circuit in the wiring harness between the following terminals of the A/C amplifier connector (16-pin) and the airflow mode actuator connector?
– 2O-A
– 2G-E
– 2P-C
Yes
Repair the wiring harness.
No
Go to the next step.
3
• Is there a short circuit to ground in the wiring harness between A/C amplifier connector (16-pin) terminal 2G and airflow mode actuator connector terminal E?
Yes
Repair the wiring harness.
No
The system is normal at present. (Clear the past malfunction from memory.)