2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Shift Lever: Inspection

  1. INSPECT SHIFT LOCK CONTROL ECU 
    1. Measure the voltage according to the values in the table below

      HINT.

      Do not disconnect the shift lock control ECU connector.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      7 (STP) - 8 (E) Brake pedal depressed 11 to 14 V
      7 (STP) - 8 (E) Brake pedal released Below 1 V
      1 (IG) - 8 (E) Engine switch on (IG) 11 to 14 V
      1 (IG) - 8 (E) Engine switch off Below 1 V
      Fig 1: Identifying Shift Lock Control ECU Connector Terminal
      G05750924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value in the table below.

      HINT.

      Do not disconnect the shift lock control ECU connector.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Value
      8 (E) - Body ground Always Below 1 Ω
      Fig 2: Identifying Shift Lock Control ECU Connector Terminal
      G05750925Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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