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Home >> Pontiac >> 1998 >> Firefly (CANADA) L4-1.3L >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Common OBD II Systems >> Preliminary Information
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Preliminary Information

The Chevrolet Metro conforms to all OBD 2 mandated emission regulations. The powertrain control module (PCM) is responsible for monitoring and modifying engine controls in order to meet all OBD 2 requirements. Certain minimum criteria for how the PCM monitors and diagnoses the emission system is specified in the OBD 2 regulations. The following information describes the common operations and terms of the OBD 2 regulations that the Metro PCM is designed to adhere to.
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