Fuel Pressure Leak Down: Notes
WARNING:
The fuel system is under a constant pressure, even with the engine off. Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE
.
NOTE:
For circuit identification and wiring diagram, see WIRING DIAGRAMS
. If Powertrain Control Module (PCM) is replaced, PCM must be reprogrammed. See PROGRAMMING
in REMOVAL & INSTALLATION - DURANGO article. After each repair procedure has been completed, reconnect all components. Perform the following test to ensure system is functioning properly.
- On 4.7L, perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS in SELF-DIAGNOSTICS - DURANGO - 4.7L article.
- On 5.9L, perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS in SELF-DIAGNOSTICS - DURANGO - 5.9L article.