Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

Check for any related TSBs before continuing.
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?
1. Yes --> Go To 2
2. No --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .

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?
1. Yes --> Go To 3
2. No --> Replace the Evap Purge Solenoid.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
  
  NOTE: Remove the vacuum gauge before continuing.
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?
1. Yes --> Repair the vacuum supply hose/tube as necessary.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .