DTC 59


BHE070201038W18

DTC 59

Airflow mode actuator (motor lock) system inspection

POSSIBLE CAUSE

• Airflow mode actuator malfunction
• A/C unit (airflow mode link and airflow mode crank) malfunction
• Open or short circuit in wiring harness between A/C amplifier and airflow mode actuator

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
• Disconnect the airflow mode actuator connector.
• Connect battery positive voltage to airflow mode actuator terminal F (or terminal G) and ground to terminal G (or terminal F).
• Does the airflow mode actuator operate?
Yes
Connect the connector, then go to Step 3.
No
Go to the next step.
2
• Remove the airflow mode actuator.
• Operate the airflow mode main link manually.
• Does the airflow mode main link operate smoothly?
Yes
Replace the airflow mode actuator. (See AIRFLOW MODE ACTUATOR REMOVAL/INSTALLATION.)
No
Replace the airflow mode main link, airflow mode sub link, and the airflow mode crank.
3
• Disconnect the A/C amplifier connector (24-pin).
• Connect battery positive voltage to A/C amplifier connector (24-pin) terminal 1V (or terminal 1U) and ground to terminal 1U (or terminal 1V).
• Does the airflow mode actuator operate?
Yes
Inspect the connection at the A/C amplifier connector (24-pin). (See A/C AMPLIFIER INSPECTION [FULL-AUTO AIR CONDITIONER].)
No
Repair the wiring harness.