2008 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

HINT:

When the engine switch is off, the main body ECU may occasionally go into a non-active state called sleep mode. Therefore, before proceeding with the inspection, it is necessary to perform the following step to wake up the ECU:

With the engine switch off, open the driver door. Then (with the engine switch still off) open and close any door several times at 1.5 second intervals.

  1. INSPECT FUSE (STR LOCK) 
    1. Remove the STR LOCK fuse from the main body ECU.
    2. Measure the resistance of the fuse.

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      STR LOCK fuse Always Below 1 Ω

    NG: REPLACE FUSE 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR - BODY GROUND) 
    1. Disconnect the L33 steering lock actuator connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      L33-1 (GND) - Body ground Always Below 1 Ω
      L33-2 (SGND) - Body ground Always Below 1 Ω
      Fig 1: Identifying L33 Steering Lock Actuator Connector Terminals
      G04950152Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (BATTERY - STEERING LOCK ACTUATOR) 
    1. Disconnect the L33 steering lock actuator connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      L33-7 (B) - Body ground Always 11 to 14 V
      Fig 2: Identifying L33 Steering Lock Actuator Connector Terminal
      G04950153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

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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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