Chrysler 300M 2002 Service Manual page 2598

Symptom:
P0440-GENERAL EVAP SYSTEM FAILURE
When Monitored and Set Condition:
P0440-GENERAL EVAP SYSTEM FAILURE
When Monitored: Engine Running. Fuel Level greater than 12%. Ambient Temperature
between 4°C and 32°C (39°F and 89°F)
Set Condition: The PCM does not see the NVLD swtich close during the medium/large
leak test. The PCM then will increase the vacuum supply to the EVAP system by
increasing flow through the EVAP Purge valve. If the switch does not close with an
increase in vacuum an error is detected. Two Trip Fault.
INTERMITTENT CONDITION
VISUAL AND PHYSICAL INSPECTION
EVAP PURGE SOLENOID VACUUM SUPPLY INSPECTION
EVAP PURGE SOLENOID STUCK CLOSED
GROUND CIRCUIT OPEN
NVLD ASSEMBLY
NVLD SENSE CIRCUIT OPEN
EVAPORATIVE EMISSION LEAK DETECTION
PCM
PCM
TEST
1 NOTE: If any of the following DTCs are set (P0443, P0452, P0453, P0498 or
P0499) diagnose them first before continuing with P0440.
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
→ Go To 11
No
POSSIBLE CAUSES
ACTION
169
DRIVEABILITY - NGC
APPLICABILITY
All