Starter Inrush Current Reduction Relay Circuit [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK WAVEFORM (STARTER INRUSH CURRENT REDUCTION RELAY)
- Connect the positive (+) lead of an oscilloscope to the positive (+) auxiliary battery terminal and the negative (-) lead to the negative (-) auxiliary battery terminal.
- While cranking the engine, count the number of times the waveform drops.
Standard
Waveform drops 2 times
Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [10/2022 - ]
Result:
NG
REPLACE STARTER. Refer to REMOVAL [10/2022 - ]