On-Vehicle Inspection [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT VVT RELAY (VVT)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Ω If the result is not as specified, replace the VVT relay (VVT).
- Measure the resistance according to the value(s) in the table below.
- INSPECT NO. 1 ELECTRONIC FUEL INJECTION MAIN RELAY (EFI-MAIN NO. 1)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Ω If the result is not as specified, replace the No. 1 electronic fuel injection main relay (EFI-MAIN NO. 1).
- Measure the resistance according to the value(s) in the table below.
- INSPECT NO. 2 ELECTRONIC FUEL INJECTION MAIN RELAY (EFI-MAIN NO. 2)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Ω If the result is not as specified, replace the No. 2 electronic fuel injection main relay (EFI-MAIN NO. 2).
- Measure the resistance according to the value(s) in the table below.
- INSPECT NO. 3 ELECTRONIC FUEL INJECTION MAIN RELAY (EFI-MAIN NO. 3)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Ω If the result is not as specified, replace the No. 3 electronic fuel injection main relay (EFI-MAIN NO. 3).
- Measure the resistance according to the value(s) in the table below.
- INSPECT INJECTOR RELAY (D INJ)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Ω If the result is not as specified, replace the injector relay (D INJ).
- Measure the resistance according to the value(s) in the table below.
- INSPECT IGP RELAY (IGP NO. 1)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher kΩ 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Ω If the result is not as specified, replace the IGP relay (IGP NO. 1).
- Measure the resistance according to the value(s) in the table below.