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*CHECKING FUEL DELIVERY (CONTINUED) 4. FUEL PUMP RELAY OUTPUT CIRCUIT OPEN Turn the ignition off. Disconnect the Fuel Pump harness connector. Note: Check connectors — Clean/repair as necessary. With the DRB III T , actuate the Fuel Pump. Using a 12-volt test light connected to ground, probe the Fuel Pump Does the test light illuminate brightly? Yes >> Go To 8 No >> Go To 5 5. CHECK FOR AN OPEN FUEL PUMP FUSE 5 Turn the ignition off. Remove and inspect the Fuel Pump Fuse 5 from the Relay Control Module. Is the Fuel Pump Fuse 5 good? Yes >> Go To 6 No >> Go To 7 6. FUEL PUMP RELAY OUTPUT CIRCUIT OPEN With the ignition off. Disconnect the Relay Control Module B harness connector. Note: Check connectors — Clean/repair as necessary. Is the resistance below 5.0 ohms? Yes >> Check the Fuel Pump Fuse 5 input circuit for voltage. Repair as necessary. If OK, replace the Relay Control Perform POWERTRAIN VERIFICATION TEST - VER 3. No >> Repair the Fuel Pump Relay Output circuit for an open. Perform POWERTRAIN VERIFICATION TEST - VER 3. ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 681 |