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Pinout Values and Diagnostic Parameters
TERMINALS OF ECMCHECK ECMTerminals Of Control Module/Pinouts (Part 1):
Terminals Of Control Module/Pinouts (Part 2):
a.
Measure the voltage and resistance of the wire harness side connectors. If the result is not as specified, the ECM may have a malfunction.
Oscilloscope Waveforms:
b.
Inspect using an oscilloscope.
HINT: The wavelength becomes shorter as vehicle speed increases.