Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

Actuator check.
Preparation
1. Set to the actuator check mode. See 5.
2. Press the DEF switch and change to step operation.
  Check: Press the DEF switch in order and check the condition of air flow mode. If OK , the mode changes with the change in the temperature setting as shown in Fig 1.
  
  Fig 1: Defrost Mode Air Temperature Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. If OK: , proceed to next circuit inspection shown on problem symptoms table. See PROBLEM SYMPTOMS TABLE .
2. NG: Go to step 2 .
Check air outlet control servomotor.
PREPARATION: Remove air outlet control servomotor. See step 2 of INSPECTION .

Check: Connect positive (+) lead to terminal 4 and negative (-) lead to terminal 5. If OK , the lever moves smoothly to FACE position.

Fig 2: Testing Air Outlet Control Servomotor Movement To FACE
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check: Connect positive (+) lead to terminal 5 and negative (-) lead to terminal 4. If OK , the lever moves smoothly to DEF position.

Fig 3: Testing Air Outlet Control Servomotor Movement To DEF
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace air outlet servomotor.
2. OK: Go to step 3 .
Check for open and short in harness and connector between A/C amplifier and air outlet servomotor . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION .
1. NG: Repair or replace harness or connector.
2. If OK , check and replace A/C amplifier.