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1995 Toyota 4Runner ECM and Ignition System

Sunday, 12. April 2009 by wire

The 1995 Toyota 4Runner ignition system consist of electronics control module (ECM), igniter, ignition coil, distributor and pickup coils.

toyota 4runner ignition system diagramThe ECM is programmed with data for optimum ignition timing  under fail operating conditions. Using data provided by sensors which monitor various engine functions (RPM, intake air volume, engine coolant temperature, etc.), the microcomputer (ECM) triggers the spark at precisely the right instant. The ECM monitors the engine condition by signals from each sensor, calculates the ignition timing and sends an ignition signal to the igniter. High voltage from the ignition is distributed to each spark plug in the appropriate order to generate a spark between the electrodes, which ignites the air–fuel mixture.

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