Chrysler 2005 Crossfire SRT6 Service Manual page 2396

9 - 472 ENGINE - ELECTRICAL DIAGNOSTICS
(P0451) FUEL TANK PRESSURE SENSOR PERFORMANCE (CONTINUED)
7.
SENSOR GROUND CIRCUIT OPEN
With the ignition off.
Measure the resistance of the Sensor Ground circuit from the Fuel
Tank Pressure Sensor harness connector to the PCM C4 harness con-
nector.
Is the resistance below 5.0 ohms?
Yes >> Go To 8
No >> Repair the Sensor Ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
8.
FUEL TANK PRESSURE SENSOR
With the ignition off.
Reconnect the PCM C4 harness connector.
Connect a jumper wire between the Fuel Tank Pressure Sensor Signal
circuit and the Sensor Ground circuit at the Fuel Tank Pressure Sen-
sor harness connector.
Turn the ignition on.
With the DRB III , read the GAS TANK PRES DIFF.
Is the Fuel Tank Pressure below 1 hPa (0.02 psi)?
Yes >> Replace the Fuel Tank Pressure Sensor. (Refer to 14 -
FUEL SYSTEM/FUEL DELIVERY/FUEL LEVEL SENDING
UNIT / SENSOR - REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No >> Replace and program the Powertrain Control Module. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/POWERTRAIN CONTROL MODULE - REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 2.
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