2007 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

On-Vehicle Inspection

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
  2. INSPECT FUEL PUMP RELAY (Marking: F/PMP) 
    1. Remove the engine room No. 2 relay block cover.
    2. Remove the fuel pump from the engine room No. 2 junction block.
    3. Inspect the resistance of the fuel pump relay.

      Standard resistance 

      TERMINAL SPECIFIED CONDITION REFERENCE CHART

      Terminal No. Specified Condition
      1 - 2 63 to 91 Ω
      3 - 4 Below 10 kΩ or higher (when battery voltage is applied to terminals 1 and 2)
    4. Reinstall the fuel pump relay to the engine room No. 2 junction block.
    5. Reinstall the engine room No. 2 relay block cover.
      Fig 1: Inspecting Fuel Pump Relay
      G05291619Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  4. PERFORM INITIALIZATION 
    1. Perform initialization (see INITIALIZATION ).
      NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
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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