Passport EX 2WD V6-3.2L SOHC (6VD1) (1997)
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Ignition Control Module: Description and Operation
DESCRIPTION AND OPERATION
The powertrain control module (PCM) controls engine ignition through a solid-state switching unit called the ignition control module (ICM). The
software in the PCM uses input from several sensors to determine the timing, duration, and strength of the spark.
The crankshaft position (CKP) sensor sends the PCM a 58X signal related to the exact position of the crankshaft.
The camshaft position (CMP) sensor sends a signal related to the position of the camshaft.
