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Circuit Inspection

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND CONNECTOR (BETWEEN AIR CONDITIONING CONTROL ASSY AND AIR CONDUCTING AMPLIFIER) 
    1. Check for open and short circuit in the harness and the connector between the air conditioning control assy and A/C amplifier (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step. 

  2. INSPECT AIR CONDITIONING CONTROL ASSY 
    1. Check that the malfunction disappear when a good air conditioning control assy is installed.

      Result: 

      RESULT RETICENCE

      A Malfunction disappeared
      B Malfunction did not disappear
    1. B: CHECK AND REPLACE AIR CONDITIONING AMPLIFIER 

    A: Go to next step. 

    CHECK AND REPLACE AIR CONDITIONING CONTROL ASSY