SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSJEEP2009COMPASS LIMITED, ED3, AWD, AUTOMATIC CVTREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANS(TRANSMISSION CONTROL MODULE (TCM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGP1679-CALIBRATION NOT LEARNEDDIAGNOSTIC TEST
2009 Jeep Compass Limited, ED3, AWD, Automatic CVT

Diagnostic Test

2009 Jeep Compass Limited, ED3, AWD, Automatic CVTSECTION Diagnostic Test
  1. CHECK IF THE DTC IS ACTIVE 
    1. With the scan tool, read Transmission DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go to step  2

      No 

      • Go to step  4
  2. CHECK FOR OTHER DTCS 
    1. With the scan tool, read Transmission DTCs.

      Is the DTC U1146-LOST COMMUNICATION WITH EXTERNAL MEMORY also present?

      Yes 

      • Refer to the Symptom list and perform diagnostics for U1146.

      No 

      • Go to step  3
  3. CHECK THE TCM 

    Has the Transmission Control Module (TCM), the CV Transmission been replaced, or a Transmission relearn procedure been performed?

    Yes 

    • Cycle the ignition off for 5 seconds and then back on. Erase the DTC and cycle the ignition again. If the DTC still remains active, 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. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .

    No 

    • 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. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  4. CHECK THE WIRING AND CONNECTORS 
    1. If the DTC is not active, erase the DTC and perform the CVT VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure 

      Did the DTC P1679-CALIBRATION NOT LEARNED reset?

      Yes 

      • Go to step  2

      No 

      • Test Complete.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.