Chrysler 300M 2002 Service Manual page 2603

DRIVEABILITY - NGC
Symptom:
P0441-EVAP PURGE SYSTEM PERFORMANCE
When Monitored and Set Condition:
P0441-EVAP PURGE SYSTEM PERFORMANCE
When Monitored: Cold start test. Engine Running. Small Leak Test Passed.
Set Condition: The PCM activates the EVAP Purge solenoid gradually increases to
maximum flow. During flow, the PCM looks for the NVLD switch to close. If the PCM does
not see the NVLD switch close at maximum flow an error is detected. Two Trip Fault.
INTERMITTENT CONDITION
CHECKING EVAP PURGE SOLENOID FUNCTIONALITY
EVAP PURGE SOLENOID VACUUM SUPPLY
TEST
1 NOTE: If any of the following DTCs are set (P0443, P0452, P0453, P0498 or
P0499) diagnose them first before continuing with P0441.
Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
No
2 NOTE: After disconnecting the Evap Purge vacuum connections, inspect
the lines and solenoid for any signs of contamination or foreign materials.
Using a hand vacuum pump, apply 10 in Hg to CAN side of the EVAP Purge
Solenoid.
Ignition on, engine not running.
Observe the vacuum gauge.
With the DRBIII , actuate the EVAP Purge Solenoid .
Does the vacuum drop when the solenoid is actuated?
Yes → Go To 3
No
3 Turn the ignition off.
Carefully inspect the Evap Purge Solenoid vacuum supply hose for proper routing.
Check for a pinched or plugged hose from the throttle body to the Purge Solenoid.
Inspect the vacuum port at the throttle body for any damage or plugging.
Were any problems found?
Yes → Repair the vacuum supply hose/tube as necessary.
No
POSSIBLE CAUSES
ACTION
→ Go To 4
→ Replace the Evap Purge Solenoid.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 4
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APPLICABILITY
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