Operation CHARM: Car repair manuals for everyone.

Signal Overview

ECM Inputs:





^ Knocking signal
^ Combustion detection
^ DRIVE signal
^ Ignition switch
^ Brake signal
^ A/C on
^ Crankshaft position sensor
^ Throttle position sensor
^ Heated oxygen sensor
^ Torque limiting
^ Cruise Control
^ Vehicle speed
^ Cooling fan on
^ Canister purge valve
^ Intake air temperature
^ Intake manifold pressure
^ Engine coolant temperature
^ Battery positive voltage
^ Ground