RAM 3500 Truck 2WD L6-5.9L DSL Turbo VIN 7 (2002)
Fig.62 Fuel Pressure Test Port Fitting
1. Remove protective cap at test port (Fig. 62). Clean area around cap/fitting before cap removal.
2. Install Special Fuel Pressure Test Gauge 6828 (or equivalent) to fitting at test port (Fig. 62).
3. To prevent engine from starting, remove fuel system relay (fuel injection pump relay). Relay is located in Power Distribution Center (PDC). Refer
to label under PDC cover for relay location.
4. Using key, crank engine over while observing gauge. Pressure should be 5-7 psi.
5. Re-install fuel system relay to PDC.
6. Start engine and record fuel pressure. Pressure should be a minimum of 69 kPa (10 psi) at idle speed.
7. Because fuel pump relay was removed, a Diagnostic Trouble Code (DTC) may have been set. After testing is completed, and relay has been
installed, use DRB scan tool to remove DTC.
Fuel Supply Restriction Test:
Due to very small vacuum specifications, the DRB scan tool along with the Peripheral Expansion Port (PEP) Module and 0-15 psi transducer must be
used.
8. Verify transfer pump pressure is OK before performing restriction test.
