LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2017 >> GS F >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Control System - Service Information >> Relay >> On-Vehicle Inspection [10/2015 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Vehicle Inspection [10/2015 - ]: Procedure

  1. INSPECT EFI CIRCUIT OPENING RELAY ASSEMBLY (C/OPN RELAY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Battery voltage applied between terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the EFI circuit opening relay assembly (C/OPN RELAY).

      GTY672235Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT EFI 2 RELAY (EFI MAIN NO. 2 RELAY) 
    GTY672235Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Battery voltage applied between terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the EFI 2 relay (EFI MAIN NO. 2 RELAY).

  3. INSPECT VVT RELAY (VVT RH RELAY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Battery voltage applied between terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the VVT relay (VVT RH RELAY).

      GTY499097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT VVT RELAY (VVT LH RELAY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Battery voltage applied between terminals 1 and 2 Below 1 Ω
      GTY499097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the result is not as specified, replace the VVT relay (VVT LH RELAY).