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HOMESERVICE MANUALSJEEP2011COMPASS LIMITED, AWD, AUTOMATIC CVT, CVT3REPAIR AND DIAGNOSISTRANSMISSIONTRANSMISSION CONTROL SYSTEMS(TRANSMISSION CONTROL MODULE (TCM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGP0602-CONTROL MODULE PROGRAMING ERROR/NOT PROGRAMMEDDIAGNOSTIC TEST
2011 Jeep Compass Limited, AWD, Automatic CVT, CVT3

Diagnostic Test

2011 Jeep Compass Limited, AWD, Automatic CVT, CVT3SECTION Diagnostic Test
  1. CHECK FOR CAN BUS DTCS 
    1. With the scan tool, check for CAN BUS DTCs.

      Are there any CAN BUS DTCs present?

      Yes 

      • Refer to the appropriate Diagnostic Code Index and perform the appropriate diagnostic procedure.
      • Perform CVT VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Go To  2.
  2. CHECK IF CONTROLLER WAS REPLACED 

    Has the Transmission Control Module been recently replaced?

    Yes 

    • Go To  3.

    No 

    • Go To  5.
  3. CHECK IF CONTROLLER WAS PROGRAMED 

    Was the Transmission Control Module flashed?

    Yes 

    • Go To  4.

    No 

    • Flash the control module with the proper part number for the vehicle.
    • Perform CVT VERIFICATION TEST. Refer to Standard Procedure .
  4. CHECK FOR OTHER DTCS 
    1. With the scan tool, check Transmission DTCs.

      Are the DTCs P0602 and U140F Active and P161B and P1729 Stored?

      Yes 

      • Check the Controller part number coincides with the vehicle setup such as engine size or with or without All wheel Drive (AWD). This is an indication of an improper vehicle configuration. Verify all configurations to the Vehicle Identification Number (VIN) and reprogram as necessary.
      • Perform CVT VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Go To  5.
  5. CHECK THE FCM FOR PROPER PROGRAMING OF TIRE SIZE 
    1. With the scan tool, check the TIPM/FCM for proper tire size programing.

      Is the tire size properly programed in the TIPM/FCM?

      Yes 

      • Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins for possible causes that may apply. If no problems are found, replace the TCM in accordance with the Service Information.
      • Perform CVT VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Program the TIPM/FCM with the proper tire size.
      • Perform CVT 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.