Diagnostic Test

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, 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 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 the appropriate Diagnostic information 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 and record them on the repair order.
  Are any active DTCs present?
  
  Yes
  - Refer to DTC INDEX and perform the appropriate diagnostic procedure.
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .