Test 2, Low Pressure Fuel Pump Check

1. Separate wiring connector at high pressure fuel pump, then have assistant turn ignition key to RUN and listen at fuel tank for low pressure pump buzz.
2. If fuel pump runs, problem is not in fuel pumps.
3. If low pressure pump does not run and high pressure pump did not run in TEST 1, proceed to TEST 3.
4. If low pressure pump does not run, but high pressure pump ran in TEST 1, proceed to TEST 12.
5. If low pressure pump runs, but high pressure pump did not run in TEST 1, proceed to TEST 15.