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. NOTE: A front door must remain open whenever checking or erasing Radio DTCs.
4. With the scan tool, record and erase the Radio DTCs.
5. Cycle the ignition switch from on to off, wait five seconds and then back to on.
6. Turn the Radio on and set the volume to 25.
7. Adjust the speakers to the front and center.
8. With the scan tool, read the active Radio DTCs.
NOTE:
A front door must remain open whenever checking or erasing Radio DTCs.

Did the DTC return?

Yes
- Go to 2
No
- Perform the TESTING FOR AN INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE USB/MEDIA PORT CABLE
NOTE:
Confirm the USB/Media port cable is connected to the Radio and USB/Media port before proceeding with this diagnostic.
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 MEDIA PORT
NOTE:
This test is designed to validate the ability of the Audio/Media system to play audio from a customer's device that has been connected to the USB port on the radio or the external USB port (Universal Customer Interface (UCI) / Multi- Media port). By connecting a known good compatible device to the USB ports it will also determine if the USB port can provide power to a connected device.

It is important to determine the system features supported by the vehicle's multi-media systems, customer's personal device and their compatibility with another.

For device compatibility, refer to http://www.driveuconnect.com

Prior to performing any testing of the multi-media systems, the compatibility between the customer's personal device and the vehicle's multi-media systems must be confirmed.
1. Confirm the USB port is not a Charge only port.
2. Using a known good USB Cable, connect the USB Cable to the vehicle's USB port.
3. Connect the USB Cable to the known good compatible device.
4. Select and audio file from the known good compatible device to be heard with the volume all the way up.
5. Using the vehicle controls, place the audio system into USB Mode. (Audio system may automatically enter into USB Mode.)
  Does the Radio play audio from the known good compatible device?
  
  Yes
  - Go To 4
  No
  - Replace the Media Port in accordance with the Service Information. Refer to MEDIA HUB, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all Radio 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).
  - Presence of foreign conductive materials on connector pins and terminals.
  - 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. Reconnect all Radio harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all 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 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 Radio DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Radio in accordance with the Service information. Refer to RADIO, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.