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. Turn the ignition on.
2. Turn the Park Lamps on.
3. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  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 (L3) LICENSE PLATE LAMP DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the Park Lamps off.
2. Turn the ignition off.
3. Disconnect the Right Tail Lamp Assembly harness connectors.
4. Disconnect the BCM C5/E harness connector.
5. Turn the ignition on.
6. Measure the voltage between ground and the (L3) License Plate Lamp Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L3) License Plate Lamp Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (L3) LICENSE PLATE LAMP DRIVER CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Measure the resistance of the (L3) License Plate Lamp Driver circuit between the Right Tail Lamp Assembly harness connectors and the BCM C5/E harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the open in the (L3) License Plate Lamp Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (Z917) GROUND CIRCUIT FOR AN OPEN
NOTE:
The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
1. Using a 12-volt test light connected to 12-volts, check the (Z917) Ground circuit at the Right Tail Lamp Assembly harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 5
  No
  - Repair the (Z917) Ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE BCM FOR CORRECT OPERATION
1. Turn the ignition off.
2. Reconnect the BCM C5/E harness connector.
3. Connect a 12-volt test light between the (L3) License Plate Lamp Driver circuit and the (Z924) Ground circuit at the Right Tail Lamp Assembly harness connector.
4. Turn the ignition on.
5. Turn the Park Lamps on.
  Does the test light illuminate brightly?
  
  Yes
  - Replace the License Plate Lamp bulb in accordance with the Service Information. Refer to LAMP, LICENSE PLATE, REMOVAL .
  - 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 .