Conditions Of Stepper Motor Control
Starting: The EML IIIs control module will position the throttle valves to the optimum opening for engine start when it receives the KL 50 input over the CAN line.
Idle: The EML IIIs programming will maintain a stable idle by adjusting the opening of the throttle valves when the vehicle is at a standstill. The EML receives the engine RPM signal from the ECM over the CAN line.
The idle will be stabilized for A/C compressor activation to compensate for the load of the compressor.
The EML receives TD and AC on signals over the can line.
Decel Fuel Cutoff: Decel fuel cutoff is activated based on the input from the pedal position sensor and the engine RPM signals. A high signal is supplied from the EML control module to the ECM control modules for the purpose of activating decel fuel cut off.
These input signals to the ECM control modules are separate hard wire lines that are also used for the "safety fuel cut off" feature of the EML control.