Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read Display Screen Module (DSM) DTCs and record on the repair order.
3. With the scan tool, erase DTCs.
4. Turn the Radio on.
5. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE VIDEO CABLE CONNECTION AT THE DISPLAY SCREEN MODULE (DSM)
1. Turn the ignition off.
2. Inspect the video cable connection at the rear of the Display Screen Module (DSM).
  Is the video cable connection secure and undamaged?
  
  Yes
  - Go To 3
  No
  - Repair the video cable connection as needed.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE VIDEO CABLE CONNECTION AT THE RADIO
1. Inspect the video cable connection at the rear of the Radio.
  Is the video cable connection secure and undamaged?
  
  Yes
  - Go To 4
  No
  - Repair the video cable connection as needed.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
TEST THE LVDS CABLE
NOTE:
To continue with this test, you must secure a Known Good Low Voltage Differential Signal (LVDS) Cable.
1. Connect a known good LVDS cable between the Radio and DSM.
2. With the scan tool, erase DTCs.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 5
  No
  - Replace the Low Voltage Differential Signal (LVDS) Video Cable in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
TEST THE RADIO
NOTE:
To continue with this test, you must secure a Known Good Radio.
1. Turn the ignition off.
2. Connect a known good Radio to the LVDS cable.
3. With the scan tool, erase DTCs.
4. Turn the ignition on.
5. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Replace the Display Screen Module (DSM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Radio in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .