2012 Lexus IS 250C Automatic TransFACTORY OEM SERVICE PROCEDURE

Integration Control and Panel Assembly Power Source Circuit: Procedure

  1. INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY 
    1. Disconnect the integration control and panel assembly connector.
      Fig 1: J54 Connector Terminal Identification
      GTY277226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      J54-8 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.
      STANDARD VOLTAGE

      Tester Connection Condition Specified Condition
      J54-14 (B) - J54-8 (E) Always 11 to 14 V
      J54-5 (ACC) - J54-8 (E) Engine switch on (ACC) 11 to 14 V
      J54-4 (IG+) - J54-8 (E) Engine switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Integration Control and Panel Assembly)

    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 
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