Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
Make sure the Torque Sensor (Grey) harness connector is connected properly before continuing with this procedure.
1. Turn the ignition on.
2. With the scan tool, read DTCs and record on the repair order.
3. With the scan tool, read and record the Environmental Data to help identify the conditions in which the DTC was set.
4. With the scan tool, erase the DTCs.
5. Cycle the ignition switch from off to on.
6. With the scan tool, read EPS DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  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 BODY CONTROL MODULE (BCM) VEHICLE CONFIGURATION ROUTINE
1. With the scan tool, select BCM under the ECU selection then "Miscellaneous Functions" and Restore Vehicle Configuration.
2. Perform the EPS VERIFICATION TEST. Refer to: EPS VERIFICATION TEST .
  Did the DTC return?
  
  Yes
  - Go To 3
  No
  - Test complete.
CHECK FOR POWERTRAIN CONTROL MODULE (PCM) DTCS
1. Turn the ignition on.
2. With the scan tool, read PCM DTCs.
  Are there any PCM or Vehicle Identification Number (VIN) related DTCs active or pending?
  
  Yes
  - Perform the appropriate diagnostic procedure. Refer to: 3.6L - DIAGNOSTIC CODE INDEX .
  No
  - Go To 4
CHECK FOR BODY CONTROL MODULE (BCM) DTCS
1. Refer to the recorded DTCs.
  Are there any BCM or Communication related DTCs active or pending?
  
  Yes
  - Perform the appropriate diagnostic procedure. Refer to: BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX .
  No
  - Go To 5
CHECK RELATED HARNESS CONNECTIONS
NOTE:
Do not disconnect the Torque Sensor (Grey) harness connector and make sure it is connected properly.
1. Disconnect the EPS Module C1 and C2 harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. 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.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Connect the EPS Module harness connectors. Be certain that the harness connectors are fully seated and the connector locks are fully engaged.
6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Connect the related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read EPS Module DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Electric Power Steering (EPS) Module in accordance with Service Information. Refer to GEAR, REMOVAL AND INSTALLATION .
  - Perform the EPS VERIFICATION TEST. Refer to: EPS VERIFICATION TEST .
  No
  - Perform the EPS VERIFICATION TEST. Refer to: EPS VERIFICATION TEST .
  - Test complete.