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Chevrolet
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2001
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Impala V6-3.4L VIN E
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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Ignition 1 Signal
Ignition 1 Signal
The scan tool displays
0
to
25.5 Volts
. The Ignition 1 represents the system voltage measured by the
PCM
at the ignition feed.