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 ACTIVE DTC
1. Turn the ignition on.
2. Turn the radio on.
3. With the scan tool, erase Radio DTCs.
4. With the scan tool, reset the Radio.
5. With the scan tool, read Radio DTCs.
  Does the scan tool display active: B1488-00 CABIN EQ MISMATCH PERFORMANCE?
  
  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 CABIN EQUALIZATION CURVE NUMBER
1. With the scan tool in the BCM ECU Details Tab, Configuration button, record the Cabin Equalization Curve number.
2. With the scan tool in the Radio ECU Details Tab, Configuration button, record the True value.
  NOTE:
  The Cabin EQ Curve value found in the BCM should match the True value found in the Radio.
  
  Do the Cabin EQ settings match one another?
  
  Yes
  - Replace the Radio in accordance to the service information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
VERIFY COMMUNICATION WITH BCM
1. With the scan tool, read the active modules on the BUS.
  Does the scan tool show the BCM active on the BUS?
  
  Yes
  - Go To 4
  No
  - Refer to NO RESPONSE FROM BCM (BODY CONTROL MODULE) and perform the No Response From Body Control Module (BCM) diagnostic procedure.
CHECK THE BCM FOR ACTIVE DTCs
1. With the scan tool, erase BCM DTCs.
2. Turn the ignition off. Wait approximately 10 seconds.
3. Turn the ignition on.
4. With the scan tool, read BCM DTCs.
  Are any active DTCs present?
  
  Yes
  - Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 2500 HD & 3500 HD and perform the appropriate diagnostic procedure.
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .