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Home >> Chevrolet >> 1997 >> Venture Base, Van Passenger Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P1635 - 5-Volt Reference "A" Circuit >> Circuit Description

Circuit Description

Powertrain Control Module (PCM) monitors 5-volt reference "A" circuit. If voltage is out of tolerance, DTC P1635 will set.

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