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Home >> Jeep >> 2024 >> Wagoneer Carbide, RWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating And Air Conditioning (ATC) - DTCS B10B2-00 To B10E8-12 >> DTC Troubleshooting >> B10C4-92-Heated Steering Wheel Control-Performance Or Incorrect Operation >> Diagnostic Test

Diagnostic Test

  1. READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR THE DTC TO RETURN 
    1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
      NOTE:

      DIAGNOSE AND REPAIR ALL LIN BUS RELATED DTC'S BEFORE PERFORMING THIS TEST PROCEDURE 

    2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
    3. With the scan tool, erase all DTCs.
    4. Turn the ignition off for a minimum of 10.0 seconds.
    5. Turn the ignition on.
    6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
    7. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

  2. REPLACE THE HEATED STEERING WHEEL (HSW) AND CHECK FOR DTC TO RETURN 
    1. Replace the Heated Steering Wheel (HSW) in accordance with the Service Information. Refer to WHEEL, STEERING, REMOVAL AND INSTALLATION .
    2. Reconnect all CSWSM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    3. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    4. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    5. With the scan tool, erase DTCs.
    6. Turn the ignition off for a minimum of 10 seconds.
    7. Start the engine.
    8. Turn the HSW on.
    9. Using the scan tool, monitor the Heated Steering Wheel temperature. The value should rise steadily until the HSW reaches the calibrated desired temperature. This will take several minutes.
    10. With the scan tool, read CSWSM DTCs.

      Is the same DTC active?

      Yes 

      • Go To  3

      No 

      • Replacing the Heated Steering Wheel (HSW) corrected the condition.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. CHECK RELATED HARNESS CONNECTIONS 
    1. Turn the ignition off.
    2. Disconnect all CSWSM harness connectors.
    3. Disconnect all related in-line harness connections (if equipped).
    4. Disconnect the related component harness connectors.
    5. 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.

    6. Reconnect all CSWSM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    9. With the scan tool, erase DTCs.
    10. Turn the ignition off for a minimum of 10 seconds.
    11. Start the engine.
    12. Turn the HSW on.
    13. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    14. With the scan tool, read CSWSM DTCs.

      Is the same DTC active?

      Yes 

      • Replace the Comfort Steering Wheel Surface Module (CSWSM) in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Repairing the wiring harness or connections corrected the problem.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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