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Home >> Oldsmobile >> 1997 >> Regency >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control Systems Tests W/Codes >> Diagnostic Trouble Codes >> DTC P1643 - Fuel Pump Pulse Width Modulation PWM) Control Circuit >> Notes

DTC P1643 - Fuel Pump Pulse Width Modulation PWM) Control Circuit: Notes

NOTE: For circuit reference, see the appropriate WIRING DIAGRAMS article. For connector and terminal identification, see CONNECTOR IDENTIFICATION .