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Home >> Chevrolet >> 1999 >> Corvette V8-5.7L VIN G >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> Vehicle On-Board & Scan Tool Diagnostics >> Engine Scan Tool Data Definitions >> FC Relay 2 and 3
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FC Relay 2 and 3

The scan tool displays On or Off. When the PCM commands a coolant fan relay ON, the scan tool indicates ON. When cooling fan relays #2 and #3 are activated, in conjunction with cooling fan relay #1, the cooling fans are enabled on high speed.
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