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Home >> Lexus >> 2013 >> CT 200h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Video System (W/O Multi-Display) (Diagnostic Codes & Circuit Tests) >> AUDIO AND VISUAL SYSTEM (w/o Multi-display) >> Circuit Tests >> Sound Signal Circuit between Radio Receiver and Multi-media Interface ECU >> Procedure

Sound Signal Circuit between Radio Receiver and Multi-media Interface ECU: Procedure

  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MULTI-MEDIA INTERFACE ECU ASSEMBLY) 
    1. Disconnect the radio receiver assembly and multi-media interface ECU assembly connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H69-1 (USD1) - H53-1 (CSLD) Always Below 1 Ω
      H69-2 (URO+) - H53-2 (CDR+) Always Below 1 Ω
      H69-3 (URO-) - H53-3 (CDR-) Always Below 1 Ω
      H69-4 (ULO+) - H53-4 (CDL+) Always Below 1 Ω
      H69-5 (ULO-) - H53-5 (CDL-) Always Below 1 Ω
      H69-1 (USD1) - Body ground Always 10 kΩ or higher
      H69-2 (URO+) - Body ground Always 10 kΩ or higher
      H69-3 (URO-) - Body ground Always 10 kΩ or higher
      H69-4 (ULO+) - Body ground Always 10 kΩ or higher
      H69-5 (ULO-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2012 - ]