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Home >> Dodge and Ram >> 2021 >> Durango SXT Plus, AWD >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> (Electronic Limited Slip Differential (ELSD) Module - Electrical Diagnostics) >> DTC Troubleshooting >> C1451-14-Rear Differential Position Sensor - Circuit Short To Ground Or Open >> Diagnostic Test
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Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, read 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 Electronic Limited Slip Differential (ELSD) DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (T333) REAR DIFFERENTIAL CLUTCH MOTOR HALL SENSOR 1 CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the ELSD Motor harness connector.
    3. Check for continuity between ground and the (T333) Rear Differential Clutch Motor Hall Sensor 1 circuit at the ELSD Motor harness connector.

      Is there continuity between ground and the (T333) Rear Differential Clutch Motor Hall Sensor 1 circuit?

      Yes 

      • Repair the (T333) Rear Differential Clutch Motor Hall Sensor 1 circuit for a short to ground.
      • Perform the ELSD VERIFICATION TEST. Refer to ELSD VERIFICATION TEST  .

      No 

      • Go To  3
  3. CHECK THE (T333) REAR DIFFERENTIAL CLUTCH MOTOR HALL SENSOR 1 CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Measure the resistance of the (T333) Rear Differential Clutch Motor Hall Sensor 1 circuit between the ELSD Module C1 harness connector and the ELSD Motor harness connector

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (T333) Rear Differential Clutch Motor Hall Sensor 1 circuit for an open or high resistance.
      • Perform the ELSD VERIFICATION TEST. Refer to ELSD VERIFICATION TEST  .
  4. CHECK THE (T333) REAR DIFFERENTIAL CLUTCH MOTOR HALL SENSOR 1 CIRCUIT 
    1. Measure the resistance between the (T333) Rear Differential Clutch Motor Hall Sensor 1 circuit at the ELSD Motor harness connector

      Is the resistance below 3.0 Ohms?

      Yes 

      • Repair the short between the (T333) Rear Differential Clutch Motor Hall Sensor 1 circuit.
      • Perform the ELSD VERIFICATION TEST. Refer to ELSD VERIFICATION TEST  .

      No 

      • Go To  5
  5. REPLACE THE ELSD MOTOR AND CHECK FOR THE DTC TO RETURN 
    1. Turn the ignition off.
    2. Replace the ELSD Motor in accordance with the Service Information. Refer to MOTOR, ELECTRONIC LIMITED SLIP DIFFERENTIAL, REMOVAL .
    3. Start the engine.
    4. With the scan tool, record and erase the DTCs.
    5. Cycle the ignition switch from on to off.
    6. Start the engine.
    7. With the scan tool, read the DTCs.

      Did the DTC return?

      Yes 

      • Go To  6

      No 

      • Replacing the ELSD Motor corrected the condition.
      • Perform the ELSD VERIFICATION TEST. Refer to ELSD VERIFICATION TEST  .
  6. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all ELSD Module harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all ELSD Module harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read ELSD DTCs.

      Did the DTC return?

      Yes 

      No 

      • The wiring or poor connection problem has been repaired.
      • Perform the ELSD VERIFICATION TEST. Refer to ELSD VERIFICATION TEST  .
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