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Home › Lexus › 2009 › LS 600hL › Repair and Diagnosis › External Pages › Different car › Section 42 (Audio/Visual) › Rear Seat Entertainment System › Sound Signal Circuit between Radio Receiver and Multi-display Controller › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK MULTI-DISPLAY CONTROLLER 
    Fig 1: Identifying R32 Controller Connector
    G05783641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the R32 controller connector.
    2. Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions, as shown in the chart below.

      Signal waveform 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R32-20 (L4-) - Body ground Audio sound is being produced A waveform synchronized with sound is output
      R32-21 (L4+) - Body ground Audio sound is being produced A waveform synchronized with sound is output
      R32-22 (R4-) - Body ground Audio sound is being produced A waveform synchronized with sound is output
      R32-23 (R4+) - Body ground Audio sound is being produced A waveform synchronized with sound is output

    NG: Go to step 2 

    OK: REPLACE MULTI-DISPLAY CONTROLLER  (See REMOVAL  )

  2. CHECK SATELLITE RADIO TUNER AND/OR DISC PLAYER 
    1. Check if the satellite radio tuner and/or disc player are equipped on the vehicle

      Result 

      RESULT CHART

      Result Proceed to
      w/o Satellite radio tuner, w/o Disc player A
      w/ Satellite radio tuner, w/o Disc player B
      w/o Satellite radio tuner, w/ Disc player C
      w/ Satellite radio tuner, w/ Disc player D

    B:  Go to step  4

    C:  Go to step  7

    D:  Go to step  11

    A: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MULTI-DISPLAY CONTROLLER) 
    1. Disconnect the L52 receiver connector
    2. Disconnect the R32 controller connector
    3. Measure the resistance according to the value(s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L52-14 (RSLD) - R32-24 (SLD4) Always Below 1 Ω
      L52-15 (R-R+) - R32-23 (R4+)
      L52-16 (R-R-) - R32-22 (R4-)
      L52-17 (R-L+) - R32-21 (L4+)
      L52-18 (R-L-) - R32-20 (L4-)
      R32-23 (R4+) - Body ground Always 10 kΩ or higher
      R32-22 (R4-) - Body ground
      R32-21 (L4+) - Body ground
      R32-20 (L4-) - Body ground
      Fig 2: Identifying L52 And R32 Connectors (Radio Receiver - Multi-Display Controller)
      G05783642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE RADIO RECEIVER  (See REMOVAL  )

  4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER) 
    1. Disconnect the L52 receiver connector.
    2. Disconnect the R29 tuner connector
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L52-14 (RSLD) - R29-16 (SLD4) Always Below 1 Ω
      L52-15 (R-R+) - R29-17 (RRI+)
      L52-16 (R-R-) - R29-18 (RRI-)
      L52-17 (R-L+) - R29-19 (RLI+)
      L52-18 (R-L-) - R29-20 (RLI-)
      L52-15 (R-R+) - Body ground Always 10 kΩ or higher
      L52-16 (R-R-) - Body ground
      L52-17 (R-L+) - Body ground
      L52-18 (R-L-) - Body ground
      Fig 3: Identifying L52 And R29 Connector Terminals (Radio Receiver - Satellite Radio Tuner)
      G05783643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (SATELLITE RADIO TUNER - MULTI-DISPLAY CONTROLLER) 
    1. Disconnect the R29 tuner connector.
    2. Disconnect the R32 controller connector
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R29-1 (SLD3) - R32-24 (SLD4) Always Below 1 Ω
      R29-2 (RLO-) - R32-20 (L4-)
      R29-3 (RLO+) - R32-21 (L4+)
      R29-4 (RRO-) - R32-22 (R4-)
      R29-5 (RRO+) - R32-23 (R4+)
      R32-20 (L4-) - Body ground Always 10 kΩ or higher
      R32-21 (L4+) - Body ground
      R32-22 (R4-) - Body ground
      R32-23 (R4+) - Body ground
      Fig 4: Identifying R29 And R32 Connector Terminals (Satellite Radio Tuner - Multi-Display Controller)
      G05783644Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. REPLACE SATELLITE RADIO TUNER WITH NORMAL ONE AND CHECK 
    1. Replace the satellite radio tuner with a normal one and check if the same problem occurs again (see REMOVAL  ).

      OK: Same problem does not occur. 

    NG: REPLACE MULTI-DISPLAY CONTROLLER  (See REMOVAL  )

    OK: END (SATELLITE RADIO TUNER IS DEFECTIVE) 

  7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - REAR SEAT CONSOLE BOX) 
    1. Disconnect the L52 receiver connector.
    2. Disconnect the R16 box connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L52-14 (RSLD) - R16-19 (SLD1) Always Below 1 Ω
      L52-15 (R-R+) - R16-20 (R2+)
      L52-16 (R-R-) - R16-21 (R2-)
      L52-17 (R-L+) - R16-22 (L2+)
      L52-18 (R-L-) - R16-23 (L2-)
      L52-15 (R-R+) - Body ground Always 10 kΩ or higher
      L52-16 (R-R-) - Body ground
      L52-17 (R-L+) - Body ground
      L52-18 (R-L-) - Body ground
      Fig 5: Identifying L52 And R16 Connector Terminals (Radio Receiver - Rear Seat Console Box)
      G05783645Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (REAR SEAT CONSOLE BOX - MULTI-DISPLAY CONTROLLER) 
    1. Disconnect the R16 box connector.
    2. Disconnect the R32 controller connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R16-13 (L-) - R32-20 (L4-) Always Below 1 Ω
      R16-12 (L+) - R32-21 (L4+)
      R16-11 (R-) - R32-22 (R4-)
      R16-10 (R+) - R32-23 (R4+)
      R16-9 (SLD) - R32-24 (SUM)
      R32-20 (L4-) - Body ground Always 10 kΩ or higher
      R32-21 (L4+) - Body ground
      R32-22 (R4-) - Body ground
      R32-23 (R4+) - Body ground
      Fig 6: Identifying R16 And R32 Connector Terminals (Rear Seat Console Box - Multi-Display Controller)
      G05783646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  9. INSPECT REAR SEAT CONSOLE BOX 
    Fig 7: Inspecting Rear Seat Console Box
    G05783647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the box connector.
    2. Measure the resistance according to the value(s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      A-1 (SLD1) - E-19 (SLD1) Always Below 1 Ω
      A-2 (R2+) - E-20 (R2+)
      A-3 (R2-) - E-21 (R2-)
      A-4 (L2+) - E-22 (L2+)
      A-5 (L2-) - E-23 (L2-)
      B-1 (SLD) - E-9 (SLD)
      B-2 (R+) - E-10 (R+)
      B-3 (R-) - E-11 (R-)
      B-4 (L+) - E-12 (L+)
      B-5 (L-) - E-13 (L-)

    NG: REPLACE REAR SEAT CONSOLE BOX  (See REMOVAL  )

    OK: Go to next step 

  10. REPLACE DISC PLAYER WITH NORMAL ONE AND CHECK 
    1. Replace the disc player with a normal one and check if the same problem occurs again (see REMOVAL  )

      OK: Same problem does not occur. 

    NG: REPLACE MULTI-DISPLAY CONTROLLER  (See REMOVAL  )

    OK: END (DISC PLAYER IS DEFECTIVE) 

  11. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER) 
    1. Disconnect the L52 receiver connector
    2. Disconnect the R29 tuner connector.
    3. Measure the resistance according to the value(s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L52-14 (RSLD) - R29-16 (SLD4) Always Below 1 Ω
      L52-15 (R-R+) - R29-17 (RRI+)
      L52-16 (R-R-) - R29-18 (RRI-)
      L52-17 (R-L+) - R29-19 (RLI+)
      L52-18 (R-L-) - R29-20 (RLI-)
      L52-15 (R-R+) - Body ground Always 10 kΩ or higher
      L52-16 (R-R-) - Body ground
      L52-17 (R-L+) - Body ground
      L52-18 (R-L-) - Body ground
      Fig 8: Identifying L52 And R29 Connector Terminals (Radio Receiver - Satellite Radio Tuner)
      G05783648Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  12. CHECK HARNESS AND CONNECTOR (SATELLITE RADIO TUNER - REAR SEAT CONSOLE BOX) 
    1. Disconnect the R29 tuner connector
    2. Disconnect the R16 box connector
    3. Measure the resistance according to the value(s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R29-1 (SLD3) - R16-19 (SLD1) Always Below 1 Ω
      R29-2 (RLO-) - R16-23 (L2-)
      R29-3 (RLO+) - R16-22 (L2+)
      R29-4 (RRO-) - R16-21 (R2-)
      R29-5 (RRO+) - R16-20 (R2+)
      R29-2 (RLO-) - Body ground Always 10 kΩ or higher
      R29-3 (RLO+) - Body ground
      R29-4 (RRO-) - Body ground
      R29-5 (RRO+) - Body ground
      Fig 9: Identifying R16 And R29 Connector Terminals (Satellite Radio Tuner - Rear Seat Console Box)
      G05783649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  13. CHECK HARNESS AND CONNECTOR (REAR SEAT CONSOLE BOX - MULTI-DISPLAY CONTROLLER) 
    1. Disconnect the R16 box connector
    2. Disconnect the R32 controller connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R16-13 (L-) - R32-20 (L4-) Always Below 1 Ω
      R16-12 (L+) - R32-21 (L4+)
      R16-11 (R-) - R32-22 (R4-)
      R16-10 (R+) - R32-23 (R4+)
      R16-9 (SLD) - R32-24 (SLD4)
      R32-20 (L4-) - Body ground Always 10 kΩ or higher
      R32-21 (L4+) - Body ground
      R32-22 (R4-) - Body ground
      R32-23 (R4+) - Body ground
      Fig 10: Identifying R16 And R32 Connector Terminals (Rear Seat Console Box - Multi-Display Controller)
      G05783650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  14. REPLACE SATELLITE RADIO TUNER WITH NORMAL ONE AND CHECK 
    1. Replace the satellite radio tuner with a normal one and check if the same problem occurs again (see REMOVAL  )

      OK: Same problem does not occur. 

    NG: Go to step 15 

    OK: END (SATELLITE RADIO TUNER IS DEFECTIVE) 

  15. INSPECT REAR SEAT CONSOLE BOX 
    Fig 11: Inspecting Rear Seat Console Box
    G05783651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the box connector
    2. Measure the resistance according to the value(s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      A-1 (SLD1) - E-19 (SLD1) Always Below 1 Ω
      A-2 (R2+) - E-20 (R2+)
      A-3 (R2-) - E-21 (R2-)
      A-4 (L2+) - E-22 (L2+)
      A-5 (L2-) - E-23 (L2-)
      B-1 (SLD) - E-9 (SLD)
      B-2 (R+) - E-10 (R+)
      B-3 (R-) - E-11 (R-)
      B-4 (L+) - E-12 (L+)
      B-5 (L-) - E-13 (L-)

    NG: REPLACE REAR SEAT CONSOLE BOX  (See REMOVAL  )

    OK: Go to next step 

  16. REPLACE DISC PLAYER WITH NORMAL ONE AND CHECK 
    1. Replace the disc player with a normal one and check if the same problem occurs again (see REMOVAL  )

      OK: Same problem does not occur. 

    NG: REPLACE MULTI-DISPLAY CONTROLLER  (See REMOVAL  )

    OK: END (DISC PLAYER IS DEFECTIVE) 

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