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Mazda
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2018
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CX-9 Touring, AWD
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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PCM Inspection
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Inspection Using An Oscilloscope (Reference)
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Drive-by-wire control (+) signal
Drive-by-wire control (+) signal
Fig 1: Drive-By-Wire Control (+) Output Voltage Signal Graph
Courtesy of MAZDA MOTORS CORP.
PCM terminals
1CG(+)-body ground(-)
Oscilloscope setting
5 V/DIV (Y), 2 ms/DIV (X), DC range
Vehicle condition
Idle after warm up