Fiero V6-173 2.8L (1986)
Chart A-7 - Fuel System Diagnosis (Part 3 of 4)
CHART A-7 - FUEL SYSTEM DIAGNOSIS (PART 3 OF 4)
Test Description:
Numbers below refer to circled numbers on the diagnostic chart.
6.
Checks for Electronic Control Module (ECM) control of relay through CKT 465.
7.
The fuel pump voltage control circuit includes an engine oil pressure switch with a separate set of normally open contacts. The switch closes at
about (4 lbs) 27 kPa of oil pressure and provides a second battery feed path to the fuel pump. If the relay fails, the pump will continue to run using
