Ignition System: Tracker

Ignition system consists of a distributor which uses a signal rotor and pick-up coil to produce ignition pulses through the externally mounted ignitor. Ignitor is mounted on right side of firewall in engine compartment. Power for ignition coil and ignitor is provided through 15-amp coil fuse, located in fuel block below left side of steering column. Fuse receives power when ignition is turned on. Ground circuit for ignition coil is regulated by the ECM. As rotating signal rotor passes pole piece of pick-up coil/crank angle sensor, a reference signal is sent to the ECM. The ECM uses this signal to determine when to signal the ignitor to open ground circuit for primary ignition.

When ignitor opens ground circuit for primary ignition, magnetic field around ignition coil windings collapses, producing an induced high voltage surge used to operate the spark plugs.