Starter Inrush Current Reduction Relay Circuit [10/2023 - ]: Procedure

1. Connect the positive (+) lead of an oscilloscope to the positive (+) battery terminal and the negative (-) lead to the negative (-) battery terminal.
2. While cranking the engine, count the number of times the waveform drops.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   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 [10/2023 - ] 

Result: 

NG 

REPLACE STARTER INRUSH CURRENT REDUCTION RELAY. Refer to  DISASSEMBLY [12/2021 - ]