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Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check voltage between terminal B +  of A/C control assembly connector and body ground. 
    1. PREPARATION: 
    2. Remove A/C control assembly with connectors still connected, see AIR CONDITIONING .
    1. CHECK: 
    2. Measure voltage between terminal B+ of A/C control assembly connector and body ground.
      Fig 1: Checking Terminal B+ For Voltage
      G01051389Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: 
    2. Voltage : 10 - 14 V 
    1. OK: Proceed to next circuit inspection shown on problem symptoms table, see  PROBLEM SYMPTOMS TABLE  . 
    2. NG: Go to next step. 
  2. Check ECU-B fuse. 
    1. PREPARATION: 
    2. Remove ECU-B fuse from No. 1 J/B.
    1. CHECK: 
    2. Check continuity of ECU-B fuse.
    1. OK: 
    2. No continuity exists. 
    1. NG: Check for short in all the harness and components connected to the ECU-B fuse, see  WIRING DIAGRAM  . 
    2. OK: Check and repair harness and connector between A/C control assembly and battery. 
    Fig 2: Checking ECU-B Fuse No. 1 J/B For Continuity
    G01051390Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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