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 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 HEADLAMP WASHER RELAY
1. Turn the ignition off.
2. Remove the Headlamp Washer relay from the Front Power Distribution Center (PDC) and substitute it with a known good relay.
3. Turn the ignition on.
4. With the scan tool, read BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Replace the Headlamp Washer relay.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (W24) FUSED RUN RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Remove the Headlamp Washer relay from the Front PDC.
3. Disconnect the BCM C4/D harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (W24) Fused Run Relay Output circuit at the BCM C4/D harness connector.
  Is there any voltage present?
  
  Yes
  - Go To 6
  No
  - Go To 4
CHECK THE (W24) FUSED RUN RELAY OUTPUT CIRCUIT FOR AN OPEN
1. Measure the resistance of the (W24) Fused Run Relay Output circuit between the Headlamp Washer Relay terminal in the front PDC and the BCM C4/D harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 7
  No
  - Go To 5
CHECK THE (Z903) GROUND CIRCUIT FOR AN OPEN
1. Measure the resistance of the (Z903) Ground circuit between ground and the Headlamp Washer Relay terminal in the Front PDC.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Go To 8
  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 .
CHECK THE FRONT PDC FOR AN INTERNAL SHORT TO VOLTAGE
1. Disconnect the Front PDC C2 harness connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
2. Using a 12 - volt test light connected to ground, check the (W24) Fused Run Relay Output circuit at the Headlamp Washer terminal in the Front PDC.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 9
  No
  - Repair the short to voltage in the (W24) Fused Run Relay Output circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE FRONT PDC FOR AN INTERNAL OPEN (W24) FUSED RUN RELAY OUTPUT CIRCUIT
1. Disconnect the Front PDC C2 harness connector.
2. Measure the resistance of the (W24) Fused Run Relay Output circuit between the Headlamp Washer terminal in the Front PDC and the Front PDC C2 harness connector, component side.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Go To 9
  No
  - Repair the open in the (W24) Fused Run Relay Output circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE FRONT PDC FOR AN INTERNAL OPEN (Z903) GROUND CIRCUIT
1. Disconnect the Front PDC C2 harness connector.
2. Measure the resistance of the (Z903) Ground circuit between the Headlamp Washer Relay terminal in the Front PDC and the Front PDC C2 harness connector, component side.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Go To 9
  No
  - Repair the open in the (Z903) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
FRONT POWER DISTRIBUTION CENTER (PDC)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors of the Front PDC.
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for signs of water intrusion, corrosion, pushed out, bent or broken terminals. Verify that there is good pin to terminal contact in the Front PDC harness connectors.
4. Perform any Technical Service Bulletins (TSB)s that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Front Power Distribution Center (PDC) in accordance with the Service Information. Refer to CENTER, POWER DISTRIBUTION (PDC), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .