DTC B2834


id070200801200

DTC B2834

Air mix actuator (motor lock) system

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 climate control unit 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 D) and terminal D (or terminal F) to ground.
• 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 climate control unit connector.
• Connect battery positive voltage to climate control unit terminal D (or terminal C) and terminal C (or terminal D) to ground.
• Does the air mix actuator operate?
Yes
Inspect the connection of the climate control unit connector. (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER].)
No
Repair the wiring harness.