Here's a comparison between OBDII vs. ECU channels:
OBDII
Battery Voltage
RPM
SPEED
Engine Coolant Temperature
Throttle Position
Intake Air Temperature
Manifold Absolute Pressure
Mass Air Flow
Fuel Level
PPS
ECU/CAN
RPM
Thorttle Position
Speed, Indicated
Speed, Real
Wheel Speed, LF
Wheel Speed, RF
Wheel Speed, LR
Wheel Speed, RR
Steering Angle
Clutch Switch
Brake Swtich
Brake Pressure
Brake Pressure, LF
Brake Pressure, RF
Brake Pressure, LR
Brake Pressure, RR
Engine Coolant Temperature
Oil Temperature
Outside Temperature
Manifold Absolute Pressure
Gear (calculated)
Acceleration, Long
Acceleration, Lat
Gyro
Distance
Fuel
Battery
Fuel Injection
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