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P0629-HIGH VOLTAGE DETECTED AT THE FUEL LIFT PUMP (CONTINUED) 6. ECM Reconnect the ECM connectors. Turn the ignition on, engine off. Connect one end of an incandescent test light to battery negative. Connect the other end of the test light to the relay driver pin in the PDC. Using the scan tool, actuate the lift pump. Does the test light illuminate brightly? Yes >> Repair complete. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC- No >> Replace the ECM. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC- 9 - 1358 ENGINE - ELECTRICAL DIAGNOSTICS - DIESEL DR/DH |