System Outputs: Overview

System Outputs

the ECM receives and processes the input information previously described and modifies the fuelling and the ignition points for each cylinder accordingly. the ECM will also supply output information to other vehicle systems.

the ECM drives the following components:

- Fuel injectors
- Ignition coils
- Main relay and fuel pump relay
- Tank Leakage Detection (NAS)
- Secondary Air Injection Pump
- Secondary Air Injection valve
- VCC Valves
- Electrically heated thermostat
- Air conditioning compressor (relay drive).

the ECM provides other systems with information regarding the:

- Engine speed
- Driver demand
- ATC request
- Automatic Transmission
- Fuel used
- Auxiliary cooling fan.