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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Antilock Brake System (Abs) - Electrical Diagnostics) >> DTC Troubleshooting >> C121C-09-Torque Request Signal Denied >> 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. VERIFY THE DTC IS ACTIVE 
    NOTE:

    This DTC must be active for the results of this test to be valid and this DTC may set while driving under severe load conditions.

    1. Turn the ignition on.
    2. With the scan tool, read and record DTCs.
    3. With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
    4. With the scan tool, erase DTCs.
    5. Cycle the ignition switch from off to on.
    6. Start Engine.
    7. With the scan tool, read and record DTCs and monitor ESP Torque Request status.

      Is the DTC active at this time?

      Yes 

      • Go To  2

      No 

  2. CHECK THE POWERTRAIN CONTROL MODULE (PCM) DTCS 
    1. With the scan tool, read and record Powertrain DTCs.

      Were any Powertrain related DTCs found?

      Yes 

      • Refer to the DTC INDEX article and perform the appropriate diagnostic procedure.

      No 

      • Go To  3
  3. ESP TORQUE REQUEST SIGNAL 
    1. Engine started.
    2. With the scan tool, read the Allow ESP Torque Request status bit.

      Was the Allow ESP Torque Request showing NOT set?

      Yes 

      No 

      • Replace the Anti-Lock Brake Module in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .