Diagnostic Aids
Perform this test when instructed during QUICK TEST or if directed by other test procedures. This test is used to diagnose the following:
- Fuel Shutoff Valve (FSV) Relay
- Inertia Fuel Shutoff (IFS) Switch
- Wiring Harness Circuits (B+, FSV, FSVM, FSV PWR, GND & VPWR). See Fig 1.
- Powertrain Control Module (PCM)
NOTE:
Any reference to Econoline applies to RV Cutaway unless otherwise indicated.