Diagnostic Test

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

CHECK FOR AN ACTIVE CONDITION
1. Turn the ignition on.
2. With the scan tool, read DTCs and record on the repair order.
3. With the scan tool, erase DTCs.
4. Turn the ignition off.
5. Press the Fuel Door Switch to release the Fuel Door.
  NOTE:
  This will cause the PCM to command the Fuel Door Unlock Driver Circuit to close and allow the diagnostic to run.
6. Turn the ignition on.
7. With the scan tool, read DTCs.
  Is the DTC present?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE FUEL DOOR UNLOCK SOLENOID (P336) CONTROL CIRCUIT FOR A SHORT TO ANOTHER VOLTAGE SUPPLY
1. Turn the ignition off.
2. Disconnect the Fuel Door Unlock Solenoid harness connector.
3. Disconnect the PCM C1 harness connector.
  CAUTION:
  Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to conduct the diagnosis.
4. Connect the special tool # 10436, (GPEC Diagnostic Adapter) to the appropriate PCM connector.
5. Check for continuity between the Fuel Door Unlock Solenoid (P336) Control circuit and all other circuits at the GPEC Adaptor.
  Is there continuity between the Fuel Door Unlock Solenoid (P336) Control circuit and any other circuit?
  
  Yes
  - Repair the Fuel Door Unlock Solenoid (P336) Control circuit for a short to the circuit that showed continuity.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
REPLACE THE FUEL DOOR UNLOCK SOLENOID AND RETEST FOR DTC
1. Replace the Fuel Door Unlock Solenoid in accordance with the Service Information.
2. Reconnect the Fuel Door Unlock Solenoid harness connector.
3. Reconnect the PCM C1 harness connector.
4. Turn the ignition on.
5. With the scan tool, read DTCs and record on the repair order.
  Did the DTC return?
  
  Yes
  - Go To 4
  No
  - Replacing the Fuel Door Unlock Solenoid repaired the fault.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK RELATED PCM AND COMPONENT CONNECTIONS
1. Complete any Service Bulletins that apply.
2. Disconnect all PCM 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 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 and program the Powertrain Control Module (PCM) 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
  - The wiring or poor connection problem has been repaired.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .