Starter Inrush Current Reduction Relay Circuit [11/2021 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Lexus NX 350, 2025 Lexus NX 250, 2024 Lexus NX 350, 2024 Lexus NX 250, and 2023 Lexus NX 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 (+) battery terminal and the negative (-) lead to the negative (-) 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 [11/2021 - ]
Result:
NG
REPLACE STARTER
For A25A-FKS: Refer to REMOVAL [11/2021 - ]
For T24A-FTS: Refer to REMOVAL [11/2021 - ]