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Home >> Chevrolet >> 1999 >> Express 1/2 Ton Van V6-4.3L VIN W >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> Reference Pulse Occurred
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Reference Pulse Occurred

(Yes/No)
The scan tool will indicate a Yes after a CKP sensor reference pulse has been detected by the VCM.
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