Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read the Body Control Module (BCM) DTCs and record on the repair order.
  Is the DTC active?
  
  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 RF HUB MODULE
1. Turn the ignition off.
2. Disconnect the Radio Frequency (RF) Hub Module C1 harness connector.
3. With the scan tool, read the BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Replace the RF Hub Module in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
  - Perform the RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST. Refer to RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST .
CHECK THE (F20) IGNITION RUN-START OUTPUT CIRCUIT FOR A SHORT TO BATTERY VOLTAGE
1. Turn the ignition off.
2. Connect the Radio Frequency (RF) Hub Module C1 harness connector.
3. Disconnect the BCM C5/E harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (F20) Ignition Run-Start Output circuit at the BCM C5/E harness connector.
  Is the voltage greater than 10.0 volts?
  
  Yes
  - Repair the short to voltage in the (F20) Ignition Run-Start Output circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  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 .