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Unlock Position Sensor Signal Circuit: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) 
    1. Measure the voltage according to the value(s) in the table below.
      Fig 1: Identifying D11 Steering Lock ECU Connector Terminals
      GTY203089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      D11-4 (SLP1) - D11-2 (SGND)
      1. Engine switch off
      2. Engine switch on (ACC or IG)
      		 Below 1 V

    NG → See step   2 

    OK → See step   3 

  2. CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - MAIN BODY ECU) 
    1. Disconnect the D11 connector from the steering lock actuator assembly.
      Fig 2: Identifying D11 Steering Lock Actuator Assembly And D8 Main Body ECU Connector Terminals
      GTY203102Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the D8 connector from the main body ECU.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Switch Condition Specified Condition
      D11-4 (SLP1) - D8-18 (SLP) Always Below 1 Ω
      D11-4 (SLP1) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   4 

  3. CHECK SMART KEY SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
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