Electronic Ignition (EI) System
DESCRIPTIONThe electronic ignition consists of a crankshaft position sensor, two four tower ignition coils and the Powertrain Control Module (PCM). The ignition control module operates by sending crankshaft position information from the crankshaft position sensor to the ignition control module. The ignition control module generates a Profile Ignition Pickup (PIP) signal (engine rpm) and sends it to the PCM. The PCM uses PIP signal in the transmission strategy, Wide-Open Throttle (WOT) shift control, torque converter clutch control and EPC pressure.
SYMPTOMS
Harsh engagements and shifts, late WOT shift, no TCC engagement.
DTCs
P0300 through P0308, P0320, P0340, P1351 through P1364.