Chrysler 2005 Crossfire SRT6 Service Manual page 2394

9 - 470 ENGINE - ELECTRICAL DIAGNOSTICS
(P0451) FUEL TANK PRESSURE SENSOR PERFORMANCE (CONTINUED)
2.
CHECK FOR CURRENT DTC
Note: Check connectors — Clean/repair as necessary. Poor pin to
terminal connections can set DTCs.
Note: Check for applicable TSBs.
Note: If the PCM detects and stores a DTC, the PCM also stores
the engine/vehicle operating conditions under which the DTC was
set. Some of these conditions are displayed on the DRB III at the
same time the DTC is displayed.
Note: Before erasing stored DTCs, record these conditions.
Attempting to duplicate these conditions may assist when check-
ing for a DTC.
Turn the ignition on.
With the DRB III , erase PCM DTCs.
Note: It maybe necessary to road test the vehicle for this DTC to
set.
With the DRB III , read PCM DTCs.
Did this DTC set again?
Yes >> Go To 3
No >> Go To 18
3.
READ FUEL TANK PRESSURE
Note: If an Evap System DTC has been set, diagnose the Evap
DTC before continuing.
Turn the ignition on.
With the DRB III , read the GAS TANK PRES DIFF.
Is the Fuel Tank Pressure above +30 hPa (0.435 psi)?
Yes >> Go To 4
No >> Go To 13
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