Diagnostic Test

CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.
  Does the scan tool display: B14DB-13-USB_TBMPORT - CIRCUIT OPEN?
  
  Yes
  - Go To 2
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the appropriate 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 VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE USB/MEDIA PORT CABLE
1. Disconnect the USB/Media port cable at the Radio.
2. Disconnect the USB/Media port cable at the USB/Media port.
3. From the 9977-6-11 Radio Antenna Diagnostic Kit (special tool #9977-6-11, Kit, USB Mini-B - 4 and 5 Wire) connect the appropriate length adapter cable between the Radio and USB Port.
4. With the scan tool, erase the Radio DTCs.
5. Cycle the ignition switch from on to off, wait five seconds and then back to on.
6. With the scan tool, read the Radio DTCs.
  Did the DTC return?
  
  Yes
  - Go To 3
  No
  - Replace the USB hub / Media Port Cable for damage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE RADIO
1. Replace the USB hub / Media Port in accordance with Service Information.
2. With the scan tool, erase the Radio DTCs.
3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
4. With the scan tool, read the Radio DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Radio in accordance with the Service information. Refer to RADIO, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .