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HOMESERVICE MANUALSJEEP2014COMPASS LIMITED, AWD, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTILOCK BRAKE SYSTEM (ABS) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGC121C-TORQUE REQUEST SIGNAL DENIEDDIAGNOSTIC TEST
2014 Jeep Compass Limited, AWD, Automatic CVT Trans

Diagnostic Test

2014 Jeep Compass Limited, AWD, Automatic CVT TransSECTION Diagnostic Test
  1. CHECK FOR A DTC C121C-TORQUE REQUEST SIGNAL DENIED 
    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.

      Does the scan tool display: C121C-TORQUE REQUEST SIGNAL DENIED?

      Yes 

      • Go To  2

      No 

      • Perform the ABS-INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
  2. CHECK THE POWERTRAIN DTCS 
    1. With the scan tool, read and record Powertrain DTCs.

      Were any Powertrain related DTCs found?

      Yes 

      • Repair the Powertrain diagnostics. Refer to the DTC INDEX article .

      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 

      • Replace the Powertrain Module in accordance with the Service Information.
      • Perform POWERTRAIN VERIFICATION TEST. Refer to the appropriate TESTING & DIAGNOSTICS article in ENGINE PERFORMANCE .

      No 

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

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.