Chrysler 2005 Crossfire SRT6 Service Manual page 2273

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(P0300) MULTIPLE CYLINDER MISFIRE (CONTINUED)
13.
FUEL INJECTOR CONTROL CIRCUIT OPEN
With the ignition off.
Measure the resistance of the Fuel Injector Control circuit from the
Fuel Injector harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes >> Repair the Fuel Injector Control circuit for an open.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No >> NOTE: Before continuing, check the PCM harness con-
nector terminals for corrosion, damage, or terminal push
out. Repair as necessary. Replace and program the Pow-
ertrain Control Module. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC
CONTROL MODULE - REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 2.
14.
RESTRICTED FUEL SUPPLY LINE
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRES-
SURE (EVEN WITH THE ENGINE OFF). BEFORE TESTING OR
SERVICING ANY FUEL SYSTEM HOSE, FITTING OR LINE, THE
FUEL SYSTEM PRESSURE MUST BE RELEASED.
Turn the ignition off.
Raise vehicle on hoist and disconnect the fuel pressure line at the fuel
pump.
Install a fuel pressure test gauge between the disconnected fuel line
and the fuel pump.
Turn the ignition on.
With the DRB III , actuate the Fuel Pump and observe the fuel pres-
sure gauge.
Note: Fuel pressure specification is 3.7 to 4.2 bar (54 to 61 psi).
Is the fuel pressure within specification?
Yes >> Repair or replace fuel supply line as necessary.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No >> Go To 15
CONTROL MODULES/POWERTRAIN
ENGINE - ELECTRICAL DIAGNOSTICS 9 - 349