FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Hyundai
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1989
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Excel L4-1468cc 1.5L SOHC (8 VALVE)
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Engine Control Module
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Description and Operation
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Power Circuits
Power Circuits
Ignition Timing System:
The ignition coil generates electrical signals which are transmitted to the ECU (from the negative terminal of the coil). The ECU calculates time between electrical pulses to determine engine speed.