Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
1. Turn the ignition on.
2. With the scan tool, record the related Freeze Frame data.
3. Check the following items which may assist in repairing the customer's complaint successfully:
  - Check the vehicles 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 2
CHECK FOR AN ACTIVE DTC
1. Start the engine and allow it to idle long enough for the Purge Solenoid 2 to become active.
2. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 3
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE (K71) EVAP PURGE CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Purge Solenoid 2 harness connector.
3. Disconnect the PCM-2 C1 harness connector.
4. Check for continuity between the (K71) EVAP Purge Control circuit and all other circuits at the PCM-2 harness connector.
  Is there continuity between the (K71) EVAP Purge Control circuit and any other circuit?
  
  Yes
  - Repair the (K71) EVAP Purge Control circuit for a short to the circuit that showed continuity.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (F342) FUSED ASD RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
1. Remove the ASD Relay from the Power Distribution Center (PDC).
2. Check for continuity between the (F342) Fused ASD Relay Output circuit and all other circuits at the PCM-2 harness connector.
  Is there continuity between the (F342) Fused ASD Relay Output circuit and any other circuit?
  
  Yes
  - Repair the (F342) Fused ASD Relay Output circuit for a short to the circuit that showed continuity.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
CHECK THE PURGE SOLENOID 2
1. Reinstall the ASD Relay from the Power Distribution Center (PDC).
2. Reconnect the PCM-2 C1 harness connector.
3. Start the engine.
4. With the scan tool, navigate to system test, and start the Purge Vapors System test. Actuate the Purge Solenoid 2 to the on position.
5. Using a 12 volt test light connected to 12 volts, probe the (K71) Purge 2 Control circuit at the Purge Solenoid 2 harness connector.
  Is the test light illuminated during the actuation?
  
  Yes
  - Replace the Purge Solenoid 2 in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 6
CHECK RELATED PCM-2 AND COMPONENT CONNECTIONS
1. Perform any Service Bulletins that apply.
2. Disconnect all PCM-2 harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Check for spread terminals and verify proper terminal tension.
  Repair any conditions that are found.
6. Reconnect all PCM-2 harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
11. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module 2 (PCM-2) in accordance with the Service information.. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  - Test complete.