Computers and Control Systems: Locations

1. Engine control module (ECM)
2. Mass air flow sensor
3. Heated oxygen sensor (HO2S)
4. Crankshaft position sensor
(Built into the distributor)
5. Engine coolant temperature (ECT) sensor
(Under the intake manifold)
6. Wide open throttle switch
7. Vehicle speed sensor (VSS)
(Built into speedometer)
8. Vacuum switching valve (VSV)
(Purge control)
9. Vacuum switching valve (VSV)
(Fuel pressure control valve)
10. Air management valve
(Secondary air injection control)
11. Fuel injector
12. Ignition coil
13. Power switch
14. Manifold absolute pressure (MAP) sensor
15. Air regulator
(Under the common chamber)
16. Exhaust gas recirculation (EGR) control system
- Duty solenoid
- Vacuum tank
- Vacuum regulator
- VSV; EGR cut
- ORIFICE