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P0627-FUEL PUMP RELAY CIRCUIT (CONTINUED) 3. INTERNAL FUSED IGNITION SWITCH AND FUSED B+ OUTPUT CIRCUITS Ignition on, engine not running. Using a 12-volt test light connected to ground, probe the Internal Does the test light illuminate brightly? Yes >> Go To 4 No >> Repair the open or short to ground in the Internal Fused Ignition Switch Output circuit or the Fused B+ circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 4. (K31) FUEL PUMP RELAY CONTROL CIRCUIT OPEN Turn the ignition off. Disconnect the C3 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing Is the resistance below 5.0 ohms? Yes >> Go To 5 No >> Repair the open in the (K31) Fuel Pump Relay Control cir- cuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 9 - 698 ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L DR/DH |