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Symptom: P0627-FUEL LIFT PUMP RELAY CONTROL CIRCUIT OPEN CIR- When Monitored and Set Condition: P0627-FUEL LIFT PUMP RELAY CONTROL CIRCUIT OPEN CIRCUIT When Monitored: With the ignition on. Set Condition: The ECM does not detect voltage on the Fuel/Lift Pump Relay Control circuit when the Fuel/Lift Pump Relay is commanded off. POSSIBLE CAUSES INTERMITTENT CONDITION ASD RELAY OUTPUT CIRCUIT OPEN FUEL LIFT PUMP RELAY FUEL LIFT PUMP RELAY CONTROL CIRCUIT SHORTED TO GROUND FUEL LIFT PUMP RELAY CONTROL CIRCUIT OPEN ENGINE CONTROL MODULE TEST ACTION APPLICABILITY 1 NOTE: If the ECM detects and stores a DTC, the ECM also stores the All Yes → Go To 2 No → Go To 3 132 DRIVEABILITY - DIESEL |