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Home >> Pontiac >> 2000 >> Grand Prix V6-3.1L VIN J >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> PCM Controlled Warning Lamps >> Powertrain On Board Diagnostic (OBD) System Check
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Powertrain On Board Diagnostic (OBD) System Check

Perform the Powertrain On Board Diagnostic (OBD) System Check, when the following conditions are present:
^ When the MIL does not turn ON when the ignition switch is turned to the RUN position. See above for MIL Operation
^ When the MIL remains ON while the engine is running
^ When the MIL is flashing while the engine is running
^ When a driveability symptom is determined
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