Diagnostic Test

WARNING: This page is about a different car, the 2016 RAM 3500 HD and 2016 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN INTERMITTENT CONDITION
1. Using the scan tool, record and erase the Radio DTCs.
2. Cycle the ignition switch from on to off, wait five seconds and then back to on.
3. Turn the radio on and set the volume to 25.
4. Adjust the speakers to the Rear and center.
5. Using the scan tool, read the active Radio DTCs.
  Does the scan tool display active: B1408-1A-REAR LEFT AUDIO SPEAKER OUTPUT - CIRCUIT RESISTANCE BELOW THRESHOLD?
  
  Yes
  - Go To 2
  No
  - Test complete, 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.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE LEFT REAR SPEAKERS
1. Using the scan tool, erase the DTCs.
2. Turn the ignition off.
3. Disconnect the Left Rear Speaker harness connector.
4. Turn the ignition on.
5. Turn the radio on and set the volume to 25.
6. Using the scan tool, read the active Radio DTCs.
  Does the scan tool display active: B1408-1A-REAR LEFT AUDIO SPEAKER OUTPUT - CIRCUIT RESISTANCE BELOW THRESHOLD?
  
  Yes
  - Go To 3
  No
  - Replace the Left Rear Speaker in accordance with the Service Information. Refer to SPEAKER, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X205) LEFT REAR SPEAKER (+) CIRCUIT, AND THE (X295) LEFT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER
1. Disconnect the Radio harness connector.
2. Measure the resistance between the (X205) Left Rear Speaker (+) circuit, and the (X295) Left Rear Speaker (-) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X205) Left Rear Speaker (+) circuit, and the (X295) Left Rear Speaker (-) circuit for a short together.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Radio in accordance with the Service Information. Refer to RADIO, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .