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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Heated Seat Module (HSM) - Electrical Diagnostics) >> DTC Troubleshooting >> B10C4-13-Heated Steering Wheel Control - Circuit Open >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IF THE DTC IS ACTIVE 
    NOTE:

    Make sure the battery is fully charged and the charging system is operating properly before proceeding.

    1. Turn the ignition on.
    2. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs).
    3. Turn the ignition off.
    4. Start the engine and let it run.
    5. Turn the Heated Steering Wheel (HSW) on.
    6. With the scan tool, read DTCs.

      Is this DTC active?

      Yes 

      • Go To  2

      No 

      • Go To  7
  2. CHECK THE (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR AN OPEN BETWEEN SCCM AND HSM 
    1. Disconnect the SCCM C8 harness connector.
    2. Disconnect the HSM C4 harness connector.
      NOTE:

      Check connectors. Clean and repair as necessary.

    3. Measure the resistance of the (C91) Heated Steering Wheel Feed circuit between the SCCM C8 harness connector and the HSM C4 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  3

      No 

      • Repair the (C91) Heated Steering Wheel Feed circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (C986) HEATED STEERING WHEEL RETURN CIRCUIT FOR AN OPEN BETWEEN SCCM AND HSM 
    1. Measure the resistance of the (C986) Heated Steering Wheel Return circuit between the SCCM C8 harness connector and the HSM C4 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (C986) Heated Steering Wheel Return circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE HEATED STEERING WHEEL FOR AN OPEN 
    1. Remove the Driver Airbag in accordance with the Service Information. Refer to AIR BAG, DRIVER, REMOVAL .
    2. Disconnect the SCCM Heated Steering Wheel harness connector.
      NOTE:

      Before proceeding, thoroughly inspect the wiring harness and connectors between the HSW and the Steering Control Module. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.

    3. Measure the resistance between the (C91) Heated Steering Wheel Feed circuit and the (C986) Heated Steering Wheel Return circuit at the SCCM Heated Steering Wheel harness connector.

      Is the resistance 1.85 ± 0.2 Ohms?

      Yes 

      • Go To  5

      No 

  5. CHECK THE (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR AN OPEN IN THE SCCM 
    1. Reconnect the SCCM C1 harness connector.
    2. Measure the resistance of the (C91) Heated Steering Wheel Feed circuit between the SCCM Heated Steering Wheel component connector and the HSM C4 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  6

      No 

  6. CHECK THE (C986) HEATED STEERING WHEEL RETURN CIRCUIT OPEN FOR AN OPEN IN THE SCCM 
    1. Measure the resistance of the (C986) Heated Steering Wheel Return circuit between the SCCM Heated Steering Wheel component connector and the HSM C4 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

  7. CHECK THE WIRING AND CONNECTORS 
    1. The conditions necessary to set the DTC are not present at this time.
    2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits.
    3. Attempt to reproduce condition by rotating the steering wheel or by adjusting the seat.
    4. Check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
    5. With the scan tool, check for any Environmental Data to help identify the conditions in which the DTC was set.
    6. Check Service Bulletins for any possible causes that may apply.

      Were there any problems found?

      Yes 

      No 

      • Test complete.