DTC B2834 [FULL-AUTO AIR CONDITIONER]SM2445598
DTC B2834 [FULL-AUTO AIR CONDITIONER]

id0702c1801200

DTC B2834

Air mix actuator (motor lock) system

Note
• DTC B2834 will be detected when the ignition switch is turned to the ON position and approx. 30 s have passed since the mode actuator is operated.
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 [FULL-AUTO AIR CONDITIONER].)
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 1S (or terminal 1U) and terminal 1U (or terminal 1S) 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.
4
• Turn the ignition switch to the ON position.
• Turn the temperature setting dial to change the set temperature (operate the air mix actuator) and wait for 30 s or more.
• Perform the DTC inspection.Is DTC B2834 indicated?
• Is DTC B2834 indicated?
Yes
Recheck malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
No
DTC troubleshooting completed.