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Symptom: *CHECKING FUEL DELIVERY POSSIBLE CAUSES FUEL PUMP RELAY FUEL PRESSURE OUT OF SPECS RESTRICTED FUEL SUPPLY LINE FUEL PUMP INLET STRAINER PLUGGED FUEL PUMP MODULE FUEL DELIVERY SYSTEM OPERATION FUEL PUMP RELAY FUSED B+ CIRCUIT (A141) FUEL PUMP RELAY OUTPUT CIRCUIT OPEN (Z1) FUEL PUMP GROUND CIRCUIT OPEN/HIGH RESISTANCE FUEL PUMP MODULE TEST ACTION APPLICABILITY 1 Turn the ignition on. t, actuate the ASD Fuel System test. Note: It may be necessary to use a mechanics stethoscope in the next step. All Yes → Go To 2 No → Go To 5 Caution: Stop All Actuations. 2 Turn the ignition off. t, actuate the ASD Fuel System test and observe the fuel pressure gauge. All Below Specification Within Specification The Fuel Delivery System is operating normally. Above Specification Replace the fuel filter/fuel pressure regulator. Caution: Stop All Actuations. 317 STARTING |