LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Mazda
>>
2018
>>
CX-9 Sport, FWD
>>
Repair and Diagnosis
>>
Engine Performance
>>
Engine Control Systems
>>
PCM Inspection
>>
Inspection Using An Oscilloscope (Reference)
>>
High Pressure Fuel Pump Control (-) Signal
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
High Pressure Fuel Pump Control (-) Signal
Fig 1: High Pressure Fuel Pump Control (-) Output Voltage Signal Graph
Courtesy of MAZDA MOTORS CORP.
PCM terminals
1EF(+)-body ground(-)
Oscilloscope setting
10 V/DIV (Y), 50 ms/DIV (X), DC range
Vehicle condition
Idle after warm up