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Inspection Procedure

  1. CHECK DTC 
    1. Clear the DTCs (see DTC CHECK/CLEAR  ).
    2. Check for DTCs again.

      OK: DTC is not output. 

      OK: END (SYSTEM OK) 

      NG: Go to next step. 

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - CERTIFICATION ECU) 
    Fig 1: Identifying Main Body ECU Connector Terminal And Certification ECU Connector Terminal
    G04943860Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA main body ECU connector.
    2. Disconnect the L15 certification ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      DA-52 (LIN1) - L15-10 (LIN) Always Below 1 Ω
      DA-52 (LIN1) or L15-10 (LIN) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step. 

  3. CHECK MAIN BODY ECU (OPERATION) 
    1. Temporarily replace the main body ECU with a new or normally functioning one.
    2. Check for DTCs again.

      OK: DTC is not output. 

      OK: GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (ROOM OSCILLATOR DOES NOT RECOGNIZE KEY)  (See ROOM OSCILLATOR DOES NOT RECOGNIZE KEY )

      NG: END (MAIN BODY ECU IS FAULTY)