LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2009 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Service Information) >> EFI Relay >> On-Vehicle Inspection >> On-Vehicle Inspection (From 10/2008)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Vehicle Inspection (From 10/2008)

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    WARNING:

    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

  2. REMOVE EFI RELAY 
    1. Remove the engine room No. 2 relay block cover.
    2. Remove the EFI relay from the engine room No. 2 relay block.
  3. INSPECT EFI RELAY 
    1. Measure the resistance of the EFI relay.
      Fig 1: Inspecting Circuit Opening Relay
      GTY138828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      3 - 5 Below 1 Ω
      (when battery voltage is applied to terminals 1 and 2)

      If the result is not as specified, replace the relay.

  4. INSTALL EFI RELAY 
  5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  6. PERFORM INITIALIZATION 
    1. Perform initialization. Refer to INITIALIZATION .
      NOTE:

      Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

scientia non olet · About LEMON Manuals