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2004
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M3 2D Convertible, S6S420G
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Repair and Diagnosis
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Diagnostic Trouble Codes With Test Charts
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Test Group Identification
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Fuel System Monitoring
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Monitoring Conditions
Monitoring Conditions
closed loop conditions
evaporative purge amount < below a defined percentage of lambda deviation
Fig 1: Identifying Monitoring Conditions Signal Waveform
Courtesy of BMW OF NORTH AMERICA, INC.