Description Of Operation, Control Module Inputs

Engine Control Module Inputs:
1. Battery voltage, +30 circuit (memory)
2. Battery voltage, +15 circuit (ignition switch)
3. Main relay
4. Ground connection
5. Crankshaft position sensor
6. Camshaft position sensor
7. Mass air flow sensor
8. Throttle position sensor
9. Coolant temperature
10. Intake air temperature
11. Knock sensors
12. Vehicle speed
13. DRIVE position on cars with automatic transmission
14. Oxygen sensors before three way catalytic converters
15. A/C / ACC status
16. TCS (active)
17. Diagnostic communication
18. Low fuel level
19. Fuel tank pressure sensor
20. Oxygen sensors after three way catalytic converter
21. CHECK ENGINE request
22. Torque reduction
23. Radiator fan starting