Circuit Description

WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

This sensor detects the position of the air inlet damper and sends the appropriate signals to the A/C amplifier.

The position sensor is built into the air inlet damper control servomotor assembly.

Fig 1: Damper Opening Angle - TPI Terminal Voltage Graph

DTC - 1432 TROUBLE DETECTION REFERENCE

DTC No.	Detection Item	Trouble Area
B1432	Short to ground or power source circuit in air inlet damper position sensor circuit.	Air inlet damper position sensor. Harness or connector between air inlet damper control servomotor assembly and A/C amplifier. A/C amplifier.