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Home >> Jeep >> 1995 >> Wrangler S, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - 4.0L >> Ignition System >> Powertrain Control Module (Pcm) Controlled Ignition System >> Notes
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Powertrain Control Module (Pcm) Controlled Ignition System: Notes

All engines use a Powertrain Control Module (PCM) based ignition system. Base ignition timing is NOT adjustable with this system. The PCM controlled ignition system consists of coolant temperature sensor, crankshaft position sensor, distributor (includes rotor and camshaft position sensor), ignition coil, manifold absolute pressure sensor, PCM and throttle position sensor.