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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 477 (Air Conditioning System - Diagnosis) >> Circuit Inspection >> DTC B1432/32 Air Inlet Damper Position Sensor Circuit, DTC B1442/42 Air Inlet Damper Position Sensor Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Lexus LS 430. 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 ECU.

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

Fig 1: Identifying TPI Terminal Voltage Graph
G03376758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DETECTION ITEM

DTC No. Detection Item Trouble Area
B1432/32 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 ECU.
  • A/C ECU.
B1442/42 Air inlet damper position sensor value does not change even if A/C ECU operates air inlet damper control servomotor.
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