Chrysler 2005 Crossfire SRT6 Service Manual page 2397

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(P0451) FUEL TANK PRESSURE SENSOR PERFORMANCE (CONTINUED)
9.
5-VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the PCM C4 harness connector.
Note: Check connectors — Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the 5-Volt Supply circuit at the Fuel Tank Pres-
sure Sensor harness connector.
Is the voltage below 1.0 volt?
Yes >> Replace and program the Powertrain Control Module.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/POWERTRAIN
REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No >> Repair the 5-Volt Supply circuit for a short to voltage.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
10.
5-VOLT SUPPLY CIRCUIT OPEN
Turn the ignition off.
Disconnect the PCM C4 harness connector.
Note: Check connectors — Clean/repair as necessary.
Measure the resistance of the 5-Volt Supply circuit from the PCM C4
harness connector to the Fuel Tank Pressure Sensor harness connec-
tor.
Is the resistance below 5.0 ohms?
Yes >> Replace and program the Powertrain Control Module.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/POWERTRAIN
REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No >> Repair the 5-Volt Supply circuit for an open.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
ENGINE - ELECTRICAL DIAGNOSTICS 9 - 473
CONTROL MODULE
CONTROL MODULE
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