Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
This vehicle has a Front Tweeter wired in parallel with the Front Speaker.
1. Turn the ignition on and open one of the front doors.
  NOTE:
  A front door must remain open whenever checking or erasing Radio DTCs.
2. With the scan tool, read Radio DTCs and record on the repair order.
3. Cycle the ignition from on to off, wait five seconds and then back to on.
4. Turn the radio on and set the volume to 25.
5. Adjust the speakers to the front and center.
6. With the scan tool, read Radio DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - 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. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE LEFT FRONT SPEAKERS
1. Make sure one of the front doors is still open.
2. With the scan tool, erase the DTCs.
3. Turn the ignition off.
4. Disconnect the Left Front Door Speaker harness connector.
5. Disconnect the Left Front Tweeter harness connector from the Left Front Tweeter.
6. Turn the ignition on.
7. Turn the radio on and set the volume to 25.
8. With the scan tool, read the active Radio DTCs.
  Did the DTC return?
  
  Yes
  - Go To 4
  No
  - Go To 3
CHECK THE LEFT FRONT SPEAKER
1. Make sure one of the front doors is still open.
2. With the scan tool, erase the DTCs.
3. Turn the ignition off.
4. Re-connect the Left Front Tweeter harness connector from the Left Front Tweeter.
5. Turn the ignition on.
6. Turn the radio on and set the volume to 25.
7. With the scan tool, read the active Radio DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Left Front Tweeter in accordance with the Service Information. Refer to SPEAKER, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Left Front Door Speaker in accordance with the Service Information. Refer to SPEAKER, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT, AND THE (X291) LEFT FRONT DOOR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER
1. Disconnect the Radio harness C1 connector.
2. Measure the resistance between the (X201) Left Front Door Speaker (+) circuit, and the (X291) Left Front Door Speaker (-) circuit at the Radio C1 harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Repair the (X201) Left Front Door Speaker (+) circuit, and the (X291) Left Front Door Speaker (-) circuit for a short together.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Radio in accordance to the service information. Refer to RADIO, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .