Amigo 2WD V6-3.2L (1999)
Ignition Control Module: Description and Operation
Ignition Control Module (ICM)
The ignition control (IC) spark timing is the PCM's method of controlling the spark advance and the ignition dwell.
The IC spark advance and the ignition dwell are calculated by the PCM using the following inputs:
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Engine speed.
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Crankshaft position (58X reference).
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Camshaft position (CMP) sensor.
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Engine coolant temperature (ECT) sensor.
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Throttle position (TP) sensor.
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Knock signal (knock sensor).
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Park/Neutral position (PRNDL input).
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Vehicle speed (vehicle speed sensor). PCM and ignition system supply voltage.
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The crankshaft positron (CKP) sensor sends the PCM a 58X signal related to the exact position of the crankshaft.
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The camshaft position (CMP) sensor sends a signal related to the position of the camshaft.
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The knock sensor tells the PCM if there is any problem with pre-ignition or detonation. This information allows the PCM to retard timing, if
necessary.