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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 77 (Engine Controls - Self-Diagnostics - 3.0L) >> Diagnostic Tests >> DTC P0645: A/C Clutch Relay Circuit Open >> DTC Parameters

DTC Parameters

WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTC will set if A/C relay feedback voltage is 2.6-4.6 volts (ECM pull-up voltage) for longer than 0.5 second indicating an open circuit when A/C relay is commanded off.

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