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Home >> Chevrolet >> 1999 >> Express 1 Ton Van V8-5.7L VIN R >> 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 >> Ignition 1
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Ignition 1

Range (0.0-25.5 Volts)
The Ignition 1 parameter indicates the voltage level on the Ignition input to the VCM. The normal Ignition 1 voltage is approximately 13.8 volts, but may vary between 11-16 volts.
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