Diagnostic Procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1081, B1082 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	INSPECT AIR MIX ACTUATOR OPERATION Disconnect the air mix actuator connector. Apply battery positive voltage and connect the ground to the air mix actuator terminals A and B, and then inspect the air mix actuator. Does the air mix actuator operate?	Yes	Connect the connector, then go to Step 3.
1		No	Go to the next step.
2	INSPECT AIR MIX LINK OPERATION 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] .
2		No	Replace the air mix link and the air mix crank.
3	INSPECT AIR MIX 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 terminal 1P and 1R, and then inspect the air mix actuator. (Driver-side) Apply battery positive voltage and connect the ground to the climate control unit terminal 1O and 1Q, and then inspect the air mix actuator. (Passenger-side) Does the air mix actuator operate?	Yes	Inspect the connection of the climate control unit connector.
3		No	Repair the wiring harness.