DTC B1086:71 [FULL-AUTO AIR CONDITIONER]

id0702c1816700

Note
•  DTC B1086:71 will be detected when the ignition switch is turned to the ON position and approx. 30 s have passed since the airflow mode actuator is operated.

DTC B1086:71

Airflow mode actuator motor lock
DETECTION CONDITION
CPU detects malfunction in airflow mode actuator system
POSSIBLE CAUSE
•  Airflow mode actuator malfunction
•  A/C unit (airflow mode link and airflow mode crank) malfunction
•  Connector or terminal malfunction
•  Open circuit in wiring harness between climate control unit connector terminal 1M and 1K
•  Short to ground in wiring harness between climate control unit connector terminal 1M and 1K

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
INSPECT AIRFLOW MODE ACTUATOR OPERATION
•  Disconnect the airflow mode actuator connector.
•  Apply battery positive voltage and connect the ground to the airflow mode actuator connector terminals D and F, and then inspect the airflow mode actuator.
•  Does the airflow mode actuator operate?
Yes
Connect the connector, then go to Step 3.
No
Go to the next step.
2
INSPECT AIRFLOW MODE MAIN LINK OPERATION
•  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 [FULL-AUTO AIR CONDITIONER].)
No
Replace the airflow mode main link, airflow mode sub link, and the airflow mode crank.
3
INSPECT AIRFLOW MODE ACTUATOR CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND
•  Disconnect the climate control unit connector.
•  Apply battery positive voltage and connect the ground to the climate control unit connector terminals 1M and 1K, and then inspect the airflow mode actuator.
•  Does the airflow mode actuator operate?
Yes
Inspect the connection of the climate control unit connector.
No
Repair the wiring harness.