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Home >> Jeep >> 1997 >> Cherokee 2WD L6-4.0L VIN S >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Spark Control

Spark Control

SPARK CONTROL
The K4 microcomputer controls the generation and timing of spark pulses. The spark advance and dwell characteristics are determined by: engine speed, throttle position, MAP, coolant temperature, barometric air pressure, air temperature, and vehicle speed.

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