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Home >> GMC >> 1983 >> Jimmy Full Size V8-350 5.7L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Test Positions >> A/C - Compressor Switch
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A/C - Compressor Switch


The scan switch displays the on and off status of the ECM A/C signal line. On condition indicates ECM command to energize compressor clutch.


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