DTC 58


BHE070201038W17

DTC 58

Air mix actuator (motor lock) system inspection

POSSIBLE CAUSE

• Air mix actuator malfunction
• A/C unit (air mix link and air mix crank) malfunction
• Open or short circuit in wiring harness between A/C amplifier and air mix actuator

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
• Disconnect the air mix actuator connector.
• Connect battery positive voltage to air mix actuator terminal F (or terminal G) and ground to terminal G (or terminal F).
• Does the air mix actuator operate?
Yes
Connect the connector, then go to Step 3.
No
Go to the next step.
2
• Remove the air mix actuator.
• Operate the air mix link manually.
• Does the air mix link operate smoothly?
Yes
Replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)
No
Replace the air mix link and the air mix 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 air mix 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.