Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
1. Turn the ignition on.
2. Using the scan tool, read DTCs. Record the related Freeze Frame data if any DTCs are present.
3. Check the following items which may assist in repairing the customer's complaint successfully:
  - Check the vehicle's repair history. If the vehicle has a repair history that pertains to the customer's current complaint, review the repair.
  - Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly.
  - Check for any service bulletin(s) related to the customer's complaint or DTCs. If a service bulletin applies, follow the instructions per the service bulletin.
  Choose the following scenario that best applies:
  
  The vehicle inspection or service bulletin repaired the customer's complaint.
  - Testing complete.
  A DTC is present, the vehicle inspection revealed no concerns, no service bulletins apply, or the service bulletin did not repair the customer's complaint.
  - Go to step 2
ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. Using the scan tool, read the active DTCs.
  Does the scan tool display P0443-EVAP PURGE CONTROL CIRCUIT?
  
  Yes
  - Go To 3
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the CHECKING FOR AN INTERMITTENT DTC diagnostic procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO VOLTAGE

Fig 1: Checking EVAP Purge Control Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the EVAP Purge Solenoid harness connector.
3. Disconnect the PCM harness connectors.
4. Turn the ignition on.
5. Measure the voltage of the (K52) EVAP Purge Control circuit in the EVAP Purge Solenoid harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (K52) EVAP Purge Control circuit.
  - Perform the PCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 4
(K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO GROUND

Fig 2: Checking EVAP Purge Control Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Measure the resistance between ground and the (K52) EVAP Purge Control circuit in the EVAP Purge Solenoid harness connector.
  Is the resistance above 100 Ohms?
  
  Yes
  - Go to step 5
  No
  - Repair the short to ground in the (K52) EVAP Purge Control circuit.
  - Perform the PCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(K52) EVAP PURGE CONTROL CIRCUIT OPEN OR EXCESSIVE RESISTANCE

Fig 3: Checking EVAP Purge Control Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K52) EVAP Purge Control circuit between the EVAP Purge Solenoid harness connector and the PCM harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 6
  No
  - Repair the open or excessive resistance in the (K52) EVAP Purge Control circuit.
  - Perform the PCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(K70) EVAP PURGE RETURN CIRCUIT OPEN OR EXCESSIVE RESISTANCE

Fig 4: Checking EVAP Purge Control Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K70) EVAP Purge Return circuit between the EVAP Purge Solenoid harness connector and the PCM harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 7
  No
  - Repair the open or excessive resistance in the (K70) EVAP Purge Return circuit.
  - Perform the PCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
EVAP PURGE SOLENOID

Fig 5: Checking EVAP Purge Control Circuit
Courtesy of CHRYSLER LLC
1. Connect the PCM harness connectors.
2. Turn the ignition on.
  NOTE: If the DTC is active, the actuation test may not be allowed by the PCM. If may be necessary to clear the DTCs before starting the actuation.
3. Using the scan tool, actuate the Evaporative Purge Valve Solenoid Duty Cycle.
4. Using a 12-volt test light connected to ground, check the (K52) EVAP Purge Control circuit in the EVAP Purge Solenoid harness connector.
  NOTE: The voltage supplied to the solenoid circuit during the actuation may be less than battery voltage. The test light should be illuminated, but may not be as bright as a direct connection to the battery.
  
  Is the test light illuminated during the actuation?
  
  Yes
  - Replace the EVAP Purge Solenoid in accordance with the Service Information.
  - Perform the PCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 8
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP Purge Solenoid and the PCM.
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Replace and program the PCM in accordance with the Service Information.
  - Perform the PCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .