Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set.
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Wait 30 seconds.
4. With the scan tool, read DTCs.
  Does the scan tool display: B1609-PANEL DIMMER INPUT CIRCUIT/PERFORMANCE?
  
  Yes
  - Replace the Left Multifunction Switch in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  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.