Chrysler 300M 2002 Service Manual page 2599

DRIVEABILITY - NGC
P0440-GENERAL EVAP SYSTEM FAILURE —
TEST
2 Perform a visual and physical inspection of the entire Evaporative Emission system.
Check for the following conditions:
- Hoses disconnected or left off
- Holes or cracks
- Loose seal points
- Evidence of damaged components
- Incorrect routing of hoses and tubes
- Fuel Cap left off or bad gasket seal
Were any of the above conditions found?
Yes → Repair as necessary.
→ 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.
Ensure the vacuum port at the throttle body is free from any blockage.
Were any problems found?
Yes → Repair the vacuum supply, hose/tube as necessary.
→ Go To 4
No
4 Disconnect the vacuum supply hoses form the EVAP Purge Solenoid.
Using a hand vacuum pump, apply 10 in Hg to the 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 5
→ Replace the Evap Purge Solenoid.
No
5 Start the engine.
Allow the engine to idle.
Using the DRBIII , perform the NVLD FORCED MONITOR TEST.
Monitor the NVLD Switch state.
NOTE: As the test runs, the NVLD Switch should go from an OPEN state to
a CLOSED state and then return to OPEN when the test is complete.
Did the NVLD Switch operate as described above?
Yes → Go To 11
→ Go To 6
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Continued
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APPLICABILITY
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