Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

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 INTELLIGENT BATTERY SENSOR (IBS)
1. Turn the ignition off.
2. Disconnect the IBS harness connector.
3. Turn the ignition on.
4. Wait 10 seconds.
5. With the scan tool, read the BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Replace the Intelligent Battery Sensor (IBS) in accordance with the Service Information. Refer to SENSOR, INTELLIGENT BATTERY (IBS), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (D401) LIN BUS 1 CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the BCM C7/G harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (D401) LIN 1 Bus circuit at the BCM C7/G harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage on the (D401) LIN Bus 1 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (D401) LIN BUS 1 CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Check for continuity between ground and the (D401) LIN Bus 1 circuit at the BCM C7/G harness connector.
  Is there continuity between ground and the (D401) LIN Bus 1 circuit?
  
  Yes
  - Repair the short to ground in the (D401) LIN Bus 1 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, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .