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Home >> Lexus >> 2009 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio/Visual >> AUDIO AND VISUAL SYSTEM (w/ Multi-display) >> Mute Signal Circuit between Navigation Assembly and Multi-display Controller >> Inspection Procedure

Inspection Procedure

  1. CHECK MULTI-DISPLAY CONTROLLER 
    1. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      R32-6 (MUT5) - Body ground Turn engine switch to ACC, audio system is playing → Changing modes Above 3.5 V → Below 1 V
      Fig 1: Identifying R32 Connector Terminals
      G04949032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: Go to step 2 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 

  2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION ASSEMBLY - MULTI-DISPLAY CONTROLLER) 
    1. Disconnect the L62 navigation connector.
    2. Disconnect the R32 controller connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      L62-8 (MUTE) - R32-6 (MUT5) Always Below 1 Ω
      L62-8 (MUTE) - Body ground Always 10 kΩ or higher
      Fig 2: Identifying L32 Display And Navigation Assembly With R32 Multi-Display Controller Connector
      G04949033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE DISPLAY AND NAVIGATION ASSEMBLY  (See REMOVAL )

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