Engine Control Module: Description and Operation

E.C.C. CONTROL UNIT
The E.C.C. control unit consists of a micro-computer, connectors for signal input and output and power supply, and an exhaust gas sensor monitor lamp. The control unit controls the feedback pulse width and fuel shut-off operation, etc.
For Non-California model, a barometric pressure sensor is installed in order to correct the mixture ratio according to the elevation.

WARNING:
- When installing CB ham radio equipment or a vehicle phone, be sure to observe the following as it may adversely affect electronic control systems depending on its installation location.
1) Keep the antenna as far as possible away from the electronic control units.
2) Also keep the antenna feeder line more than 20 cm (7.9 in) away from the harness of electronic controls. Do not let them run parallel for a long distance.
3) Adjust the antenna and feeder line so that the standing-wave ratio can be kept smaller.