INSTALLING PROTECTIVE LIFT PUMP RELAY The life pump is powered through the ECM via pin #15 and #35.   Every time the lift pump is energized the power drawn through the ECM causes heat.  After a few thousands cycles of start/stops this heating up and cooling down cause’s degradation in the solder joints and failure.  Another possible cause of ECM failure is higher than normal amperage load by either a larger capacity lift pump or a failing pump.   As a lift pump starts to go bad (wear intern