Dodge 2004 Neon SX2 Diagnostic Manual page 501

P0442-EVAP SYSTEM MEDIUM LEAK —
TEST
6 Reconnect all vacuum hoses.
Start the engine.
Allow the engine to idle.
Using the DRBIII , perform the NVLD FORCED MONITOR TEST.
Monitor the NVLD Switch.
As the test runs, the NVLD Switch should go from an OPEN state to
CLOSED. After the vacuum is released form the EVAP system the Switch
state will return to OPEN.
Did the NVLD Switch operate as described above?
Yes → Go To 7
→ Replace the NVLD Assembly.
No
7 WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Review the DRBIII Freeze Frame information. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
NOTE: A loose gas cap could have caused this DTC to set. Make sure gas cap
is tight and in good condition. Ensure the gas cap meets OEM specifications.
Perform a visual and physical inspection of the entire Evaporative Emission system.
Check for the following conditions:
- Holes or cracks
- Loose seal points
- Evidence of damaged components
- Incorrect routing of hoses and tubes
- Fuel Cap gasket seal
Were any of the above conditions found?
Yes → Repair as necessary.
→ Test Complete.
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 6 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 6 - NGC.
DRIVEABILITY - NGC
Continued
165
APPLICABILITY
All
All