Operation CHARM
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Chevy Truck
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1999
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Tracker 4WD L4-1.6L VIN 6
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Repair and Diagnosis
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Relays and Modules
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Engine Control Module
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Description and Operation
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Powertrain Control Module (PCM) Description
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Common OBD II Systems
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Warm-Up Cycle
Warm-Up Cycle
A warm-up cycle means that the engine temperature must reach a minimum of
70°C (160°F)
and rise at least
22°C (40°F)
over the course of a trip.