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.
Electronic Spark Control Module: Description and Operation
1987 Saab 9000 L4-1985cc 2.0L DOHCSECTION Description and Operation
Fig. 84 Ignition System Schematic:
The output module, mounted on a cooling fin on the left-hand wheel arch, amplifies and transforms the pulse from the distributor. From the output module, the pulse is to control the saturation and discharging of the ignition coil. The output module also controls dwell angle. See Fig. 84 for a diagram of the ignition system including the output module.
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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.