ES 350 V6-3.5L (2GR-FE) (2007)
(e)
Inspect the input signal and output current.
NOTICE: Be sure to perform the inspection with the radiator coolant temperature less than 95°C (203°F).
(1) Connect the 400 A probe of the ammeter to terminal M+ of the cooling fan motor.
(2) Set the intelligent tester to the oscilloscope function.
(3) Using the intelligent tester, check the waveform between terminals RFC and E1 of the ECM.
Standard waveform
HINT:
^
If the input signal is abnormal, there is a malfunction in the ECM or cooling fan ECU.