Control Unit
NOTE:
For ease of understanding, components are grouped into 2 categories. The first category, INPUT DEVICES, is components which control or produce voltage signals that are monitored by the ECU. The second category, OUTPUT DEVICES, are components that are controlled by the ECU (this is usually accomplished by the ECU grounding individual circuits).
The Electronic Control Unit ECU is located behind glove box. The ECU continually corrects air/fuel mixture, based on signals from oxygen sensor. The ECU sends signals to frequency valve, which is located in fuel line between upper and lower halves of fuel distributor.