DTC 33 & 43: Air Outlet Damper Position Sensor Circuit: Wiring Diagram

Preparation

1. Remove center cluster module control with connectors still connected.
2. Turn ignition switch ON.

   Check:  Measure the voltage between terminals TPM and SGTPM of A/C amplifier.

   Fig 2: Locating A/C Amplifier TPM & SGTPM Terminals

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   If OK  , see Fig 3.

   Fig 3: Identifying A/C Amplifier Terminal TPM & SGTPM Specifications (Air Flow Selection Switch In Face Or Def)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: As the air outlet damper control servomotor is moved from FACE side to DEF side, the voltage decreases gradually without interruption.

1. NG: Go to step   2 . 
2. If OK  , proceed to next circuit inspection shown on problem symptoms table. See PROBLEM SYMPTOMS TABLE . However, if DTC 34 or 44 is displayed, check and replace A/C amplifier.

PREPARATION:  Remove air outlet servomotor. See step 2 of INSPECTION .

Check:  Measure resistance between terminals 1 and 2 of air outlet servomotor assembly connector. If OK  , resistance : 4.2 - 7.8 kΩ.

Fig 4: Identifying Air Outlet Servomotor Face Or Def Positions & Terminals 1-3

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Check:  While operating air outlet damper control servomotor as in the procedure DTC 43: AIR OUTLET DAMPER CONTROL SERVOMOTOR CIRCUIT , measure resistance between terminals 2 and 3 of air outlet damper control servomotor. If OK  , see Fig 5.

Fig 5: Identifying Air Outlet Servomotor Terminal 1-3 Specifications (Air Flow Selection Switch In Face Or Def)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG:  Replace air outlet control servomotor assembly.
2. OK: Go to step   3 . 

1. NG:  Repair or replace harness or connector.
2. If OK  , check and replace A/C amplifier.