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Chevy Truck
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2000
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C Tahoe 2WD V8-4.8L VIN V
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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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Air Pump Relay
Air Pump Relay
The scan tool displays ON or OFF. The scan tool displays ON when the
PCM
grounds the AIR pump relay control circuit. The scan tool displays OFF when the PCM disables the ground circuit.