Diagnostic Test

READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for at least 10 seconds.
5. Slowly rotate the DSCM Rotary knob to each position at least five times.
6. Wait at least 90 seconds.
7. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the appropriate INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK DSCM ROTARY KNOB FOR PROPER OPERATION
1. Inspect the DSCM Rotary Knob for any debris or objects that would prevent proper operation. Remove any objects or debris that may interfere with proper operation.
2. With the scan tool, erase DSCM DTCs.
3. Turn the ignition off for at least 10 seconds.
4. Slowly rotate the DSCM Rotary knob to each position at least five times.
5. Wait at least 90 seconds.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 3
  No
  - Cleaning or removing any debris or foreign substance from the button corrected the condition.
  - Perform the DRIVE STYLE CONTROL MODULE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK RELATED HARNESS CONNECTIONS
1. Turn the ignition off.
2. Disconnect all DSCM 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.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
6. Reconnect all DSCM 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. Turn the ignition off for at least 10 seconds.
11. Slowly rotate the DSCM Rotary knob to each position at least five times.
12. Wait at least 90 seconds.
13. With the scan tool, read DSCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Drive Style Control Module (DSCM) in accordance with the Service Information.
  - Perform the DRIVE STYLE CONTROL MODULE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repairing the wiring or the connectors corrected the condition.
  - Perform the DRIVE STYLE CONTROL MODULE VERIFICATION TEST. Refer to STANDARD PROCEDURE .