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Home >> Lexus >> 2009 >> LS 460L AWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication >> Can Communication System >> DTC U1111 Lost Communication with Body No. 5 Module >> Inspection Procedure

Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (FRONT CONTROLLER - BATTERY AND BODY GROUND) 
    1. Disconnect the A50 and A52 front controller connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      A50-2 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      A52-5 (ALTB) - Body ground Always 11 to 14 V
      A52-1 (BATB) - Body ground Always 11 to 14 V
      A50-1 (FMB3) - Body ground Always 11 to 14 V
      Fig 1: Identifying A50 And A52 Front Controller Connectors Terminals
      G04953605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE FRONT CONTROLLER 

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