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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT RADIO RECEIVER ASSY 
    1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      TX1+ - TX1- Always 60 to 80 Ω
      Fig 1: Identifying Radio Receiver Assy Connectors
      G02909499Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE RADIO RECEIVER ASSY (See  REPLACEMENT  ) 
    2. OK: GO TO NEXT STEP. 
  2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER SUB-ASSY - RADIO RECEIVER ASSY) 
    1. Disconnect the connectors from the multi-display controller sub-assy R29 and radio receiver assy R23.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      TX+-TX1+ Always Below 1 Ω
      TX- - TX1- Always Below 1 Ω
      TX+ - Body ground Always 10 kΩ or higher
      TX- - Body ground Always 10 kΩ or higher
      Fig 2: Identifying Multi-Display Controller Sub-Assy Connector R29
      G02909500Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Identifying Radio Receiver Assy Connector R23
      G02909501Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN DIAGNOSTIC TROUBLE CODE CHART (See  DIAGNOSTIC TROUBLE CODE CHART  ) 
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