B1431

DTC B1431/31 Air Mix Damper Position Sensor Circuit (Passenger Side)

DESCRIPTION

DTC Detecting Condition:

This sensor detects the position of the air mix control servo motor (air mix damper) and sends the appropriate signals to the A/C amplifier assembly. The position sensor is built in the air mix control servo motor. The position sensor resistance changes as the air mix control servo motor arm moves.

It outputs voltage (5 V) that is input to terminal 1 (VZ) and terminal 3 (PT) via the variable resistor, and then to the A/C amplifier assembly. The A/C amplifier assembly reads the arm position with the input voltage from the position sensor.

Wiring Diagram:

Step 1:

Step 1(Continued)-2:

Step 3:

Step 4:

INSPECTION PROCEDURE