Timing Control Systems

Ignition timing is electronically controlled by Powertrain Control Module (PCM). Base ignition timing is not adjustable with this system. PCM controlled ignition system consists of engine coolant temperature sensor, crankshaft position sensor, camshaft position sensor, ignition coil(s), manifold absolute pressure sensor and throttle position sensor. For ignition coil resistance test, see IGNITION COIL . For sensor testing, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - LIBERTY article.