Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. 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 Body Control Module (BCM) DTCs and record on the repair order.
2. Record the Environmental Data.
3. With the scan tool, erase DTCs.
4. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. With the scan tool, read BCM DTCs.
  Did the DTC return?
  
  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 RIGHT TURN LAMPS
1. With the ignition on, turn the Right Turn Lamps on.
2. Compare the speed of the Right Turn Lamp Indicator, on the Instrument Panel Cluster (IPC), to the speed of the Front and Rear Right Turn Lamps and Right Exterior Mirror Turn Lamp, if equipped.
  Does the IPC Right Turn Signal Indicator and Right Exterior Mirror Turn Lamp, if equipped, flash at the same rate as the Front and Rear Right Turn Lamps?
  
  Yes
  - Go To 5
  No
  - Go To 3
CHECK THE (L552) RIGHT FRONT LIGHTING FAULT SENSE CIRCUIT FOR A SHORT TO VOLTAGE
NOTE:
Verify the Right Turn Lamps are off when performing this step.
1. Turn the Right Turn Lamps off.
2. Turn the ignition off.
3. Disconnect the Right Front Lamp Assembly harness connector.
4. Disconnect the BCM C6/F harness connector.
5. Turn the ignition on.
6. Measure the voltage on the (L552) Right Front Lighting Fault Sense circuit at the Right Front Lamp Assembly harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L552) Right Front Lighting Fault Sense circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (L552) RIGHT FRONT LIGHTING FAULT SENSE CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Measure the resistance of the (L552) Right Front Lighting Fault Sense circuit between the Right Front Lamp Assembly harness connector and the BCM C6/F harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Inspect the Right Front Lamp Assembly harness connector for pushed out terminals. If a pushed out terminal is found, attempt to repair the condition. If the condition cannot be repaired, a new wiring harness may need to be installed. If no problems are found at the Right Front Lamp Assembly harness connector, repair the open in the (L552) Right Front Lighting Fault Sense circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (L60) RIGHT FRONT TURN LAMP DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
NOTE:
Verify the Right Turn Lamps are off when performing this step.
1. Disconnect the Right Front Lamp Assembly harness connector.
2. Disconnect the BCM C1/A harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (L60) Right Front Turn Signal Driver circuit at the Right Front Lamp Assembly harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L60) Right Front Turn Lamp Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 6
CHECK THE (L60) RIGHT FRONT TURN LAMP DRIVER CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Measure the resistance of the (L60) Right Front Turn Lamp Driver circuit between the Right Front Lamp Assembly harness connector and the BCM C1/A harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 7
  No
  - Repair the open in the (L60) Right Front Turn Lamp Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE GROUND CIRCUITS FOR AN OPEN
1. Measure the resistance between ground and the Ground circuits at the Right Front Lamp Assembly harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 8
  No
  - Repair the open in the Ground circuit(s).
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE BCM FOR CORRECT OPERATION
1. Connect the BCM C1/A harness connector.
2. Connect a 12-volt test light between the (L60) Right Front Turn Lamp Driver circuit and the Ground circuit at the Right Front Lamp Assembly harness connector.
3. Turn the ignition on.
4. Turn the Right Turn Lamps on.
  Does the test light blink on and off?
  
  Yes
  - Replace the Right Front Turn Lamp Bulb in accordance with the Service Information. Refer to UNIT, FRONT LAMP, 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 (BCM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .