E.C.C. Description (Models with catalyzer) - Components
EF & EC-31prose procedureDistinguishes E.C.C. control unit appearance for models with E.G.R. vs without E.G.R.
Components
E.C.C. CONTROL UNIT (E.C.U.)
The E.C.C. control unit consists of a micro-computer, connectors for signal input and output and power supply. The control unit controls the feedback pulse width and fuel shut-off operation, etc.
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.
EXHAUST GAS SENSOR
The exhaust gas sensor, which is built into the exhaust manifold, monitors the density of oxygen in the exhaust gas. It consists of a closed-end tube made of ceramic zirconia and other components. Porous platinum electrodes cover the tubes inner and outer surfaces. The closed-end of the tube is exposed to the exhaust gas in the exhaust manifold. The tubes outer surface contacts the exhaust gas while the inner surface contacts the air.