Astro Van AWD V6-4.3L VIN X (2003)
Engine Control Module: Description and Operation
Distributor Ignition (DI) System
The PCM controls all ignition system functions, and constantly corrects the basic spark timing. The PCM monitors information include the following:
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The throttle position (TP) sensor
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The engine coolant temperature (ECT) sensor
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The mass airflow (MAF) sensor
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The intake air temperature (IAT) sensor
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The vehicle speed sensor (VSS)
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The transmission gear position or range information sensors
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The engine knock sensors (KS)
