B1437

DTC B1437/37 Rear Air Mix Damper Position Sensor Circuit

DESCRIPTION

DTC Detection Condition:

This sensor detects the position of the rear air mix control servo motor (water valve servo motor) and sends the appropriate signals to the A/C amplifier. The position sensor is built in the rear air mix control servo motor (water valve servo motor).

The position sensor's resistance changes as the rear air mix control servo motor valve moves.

It outputs voltage (5 V) that is input to terminal 2 and terminal 3 via the variable resistor, and then to the A/C amplifier The A/C amplifier determines the valve position based on the input voltage from the position sensor.

Wiring Diagram:

Step 1:

Step 1 (Continued)-2:

Step 3:

INSPECTION PROCEDURE