Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSEAGLE1994SUMMIT WAGON AWD L4-1795CC 1.8L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION CONTROL MODULEDESCRIPTION AND OPERATION
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHC
Ignition Control Module: Description and Operation
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHCSECTION Description and Operation
Ignition Coil And Power Transistor Circuit:
PURPOSE
The power transistor controls ignition current by interrupting the ignition coil primary ground causing secondary circuit discharge.
OPERATION
The engine control module (ECM) controls ignition timing through the power transistor. The power transistor is a switch that allows a very low voltage (from the ECM) to control a larger amount of voltage (negative side of coil). During engine cranking the ignition timing is fixed at 5°BTDC
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.