Chrysler 2005 Crossfire SRT6 Service Manual page 2390

9 - 466 ENGINE - ELECTRICAL DIAGNOSTICS
(P0446) EVAP PURGE SOLENOID STUCK OPEN (CONTINUED)
When Monitored and Set Condition
• When Monitored: Cold start test. Engine Running.
• Set Condition: The Powertrain Control Module (PCM) activates the Evap Purge Solenoid gradually and
increases to maximum flow. The PCM monitors the Fuel Tank Pressure Sensor and if the value falls below -40
hPa (0.58 psi) too soon, this DTC is set.
EVAP PURGE SOLENOID
EVAP PURGE SOLENOID VACUUM SUPPLY
For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
PRE-DIAGNOSTIC CHECK OUT
Note: Always perform diagnostics with a fully charged battery.
Note: Check connectors — Clean/repair as necessary. Poor pin to
terminal connections can set DTCs.
Note: Check for applicable TSBs related to the problem.
Turn the ignition on.
With the DRB III , read PCM DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and
connectors. Repair as necessary.
Perform this procedure prior to symptom diagnosis.
Continue
Go To 2
2.
CHECK FOR CURRENT DTC
Note: If any EVAP/Charcoal Canister DTCs are set, diagnose them
first before continuing with P0446.
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 an active 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 5
POSSIBLE CAUSES
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