FDS15 - Check Pump Speeds

^ Key Off.

^ Connect DVOM into Inertia Fuel Shutoff (IFS) switch connector.

^ Start engine and monitor voltage at the IFS.

^ Is voltage between 12.0 and 14.0 volts during crank and initial idle speed, then drops between 7.0 and 10.0 volts after a short time?

YES -- Go to FDS17. FDS16 - Check Pressure Difference

NO -- Dual voltage system may be damaged. Perform Quick Test and repair DTC codes.