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Engine Fuel & Emission Control System NEF390 ECM (ECCS-D control module) ● Do not disassemble ECM. ● If a battery terminal is disconnected, the memory ● When ECM is removed for inspection, make sure WIRELESS EQUIPMENT ● When installing C.B. ham radio or a mobile 1) Keep the antenna as far as possible away from the ECM. 2) Keep the antenna feeder line more than 20 cm (7.9 in) away from the harness of elec- 3) Adjust the antenna and feeder line so that the standing-wave ratio can be kept small. 4) Be sure to ground the radio to vehicle body. ECM HARNESS HANDLING ● Connect ECM harness connectors securely. ● Keep ECM harness at least 10 cm (3.9 in) ● Keep ECM parts and harnesses dry. ● Before removing parts, turn off ignition WHEN STARTING ● Do not depress accelerator pedal when ● Immediately after starting, do not rev up ● Do not rev up engine just prior to shut- ECM PARTS HANDLING ● Handle mass air flow sensor carefully to avoid ● Do not disassemble mass air flow sensor. ● Do not clean mass air flow sensor with any type ● Do not disassemble No. 1 injection nozzle (built- ● Even a slight leak in the air intake system can ● Do not shock or jar the camshaft position sensor ELECTRONIC FUEL INJECTOR PUMP ● Do not disconnect pump harness connectors ● Do not disassemble or adjust electronic fuel BATTERY ● Always use a 12 volt battery as power ● Do not attempt to disconnect battery cables ECM mainframe PRECAUTIONS AND PREPARATION CD20T EC-5 |