Chrysler 2005 Crossfire SRT6 Service Manual page 2283

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(P0301) CYLINDER #1 MISFIRE (CONTINUED)
8.
CHECKING FUEL LEAK DOWN
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 PRES-
SURE MUST BE RELEASED.
Note: Before continuing visually and physically inspect the fuel delivery system for external leaks or dam-
age. Repair/replace as necessary.
Turn the ignition off.
Install a substitute fuel pressure hose between the fuel pump and fuel filter.
Start the engine and allow the fuel system to reach maximum pressure.
Turn the ignition off.
Using Special Tool #C4390, Hose Clamp Pliers, slowly clamp off the substitute fuel pressure hose between the fuel
pump and the fuel filter.
Monitor the fuel pressure gauge for a minimum of 5 minutes.
Note: The pressure should not fall below 3.0 bar (44 psi) within 5 minutes and should not fall below 2.5 bar
(36 psi) within 30 minutes.
Does the fuel pressure gauge fall below the above specification?
Yes >> Replace the leaking component between the Fuel Pump and Injector(s).
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No >> Go To 9
Note: Remove the hose clamp pliers before continuing with test.
9.
ENGINE CONTROL RELAY OUTPUT CIRCUIT
Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Note: Check connectors — Clean/repair as necessary.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Engine Con-
trol Relay Output circuit at the Fuel Injector harness connector.
Does the test light illuminate brightly?
Yes >> Go To 10
No >> Repair the Engine Control Relay Output circuit for an
open.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
ENGINE - ELECTRICAL DIAGNOSTICS 9 - 359