Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
- Before testing, inspect the AUX port, USB port and SD slot for damage or debris inside the ports and device connectors that can cause concerns with system operation.
- Use a known good compatible device and USB cable that works on a similar system when testing for concerns.
- Verify that no other devices are connected to the system during testing.
1. With the scan tool, read Radio DTCs and record on the repair order.
2. With the scan tool, erase DTCs.
3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
4. Connect a known good USB device into the USB port.
5. With the scan tool, read Radio 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 CONNECTORS AND HARNESS
1. Turn the ignition off.
2. Disconnect the USB harness connector at the back of the radio.
3. Inspect the connectors and harness between the USB port and the radio.
  Are there any issues with the harness or connectors?
  
  Yes
  - Repair or replace as needed.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
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).
  - 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.