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HOMESERVICE MANUALSJEEP2014GRAND CHEROKEE LAREDO, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 14 (3.0L DIESEL EURO5+ - INTERMITTENT DTC, PCM/ECM/TCM PROGRAMMING, PCM VERIFICATION TEST & PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE)STANDARD PROCEDUREPCM VERIFICATION TESTDIAGNOSTIC TEST
2014 Jeep Grand Cherokee Laredo, AWD

Diagnostic Test

2014 Jeep Grand Cherokee Laredo, AWDSECTION Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
  1. SELECT THE PROPER VERIFICATION TEST 

    Select the verification test for the repair that has been completed:

    For a Speed Control repair 

    • Go To  2

    For a Charging System repair 

    • Go To  3

    For a No Start repair 

    • Go To  4

    For DTC and all other repairs 

    • Go To  5
  2. SPEED CONTROL VERIFICATION TEST 
    1. Inspect the vehicle to make sure that all engine components are properly installed and connected. Reassemble and reconnect components as necessary.
    2. With the scan tool, erase all DTCs.
    3. Road test the vehicle at a speed above 60 km/h (35 MPH).
    4. Turn the speed control ON/OFF switch on.
    5. Depress and release the SET switch. If the speed control does not engage, the repair is not complete, continue with step 12.
    6. Quickly depress and release the RESUME/ACCEL switch. If the vehicle speed does not increase by 3 km/h (2 MPH), the repair is not complete, continue with step 12.
    7. Using caution, depress and release the brake pedal. If the speed control does not disengage, the repair is not complete, continue with step 12.
    8. With the vehicle speed at least 60 km/h (35 MPH), depress the RESUME/ACCEL switch. If the speed control does not resume at the previously set speed, the repair is not complete, continue with step 12.
    9. Hold down the COAST switch. If the vehicle does not decelerate, the repair is not complete, continue with step 12.
    10. While still holding down the COAST switch, make sure the vehicle speed is at least 60 km/h (35 MPH) and release the COAST switch. If the vehicle does not adjust and set a new vehicle speed, the repair is not complete, continue with step 12.
    11. With the speed control engaged, depress the ON/OFF switch. If the speed control does not disengage, the repair is not complete, continue with step 12.
    12. If the vehicle did not successfully perform all of the previous steps, perform any Technical Service Bulletins (TSBs) that may relate to this condition, if necessary, return to the DTC List.
    13. If the vehicle successfully performed all of the previous steps, the speed control system is now functioning as designed. The repair is now complete.

      Are any DTCs or symptoms remaining?

      Yes 

      • Repair is not complete, perform the appropriate diagnostic procedure.

      No 

      • Repair is complete.
  3. CHARGING SYSTEM VERIFICATION TEST 
    1. Inspect the vehicle to make sure that all engine components are properly installed and connected. Reassemble and reconnect components as necessary.
    2. With the scan tool, erase all DTCs.
    3. Start the engine.
    4. Raise the engine speed to 2000 RPM for at least 30 seconds.
    5. Allow the engine to idle.
    6. Turn the ignition off for 20 seconds.
    7. Turn the ignition on.
    8. With the scan tool, read PCM DTCs.
    9. If this DTC has set again, or another DTC has set, perform any Technical Service Bulletins (TSBs) that may relate to this condition. Return to the DTC List if necessary.
    10. If the charging system is functioning correctly and there are no DTCs, the repair is now complete.

      Are any DTCs or symptoms remaining?

      Yes 

      • Repair is not complete, perform the appropriate diagnostic procedure.

      No 

      • Repair is complete.
  4. NO START VERIFICATION TEST 
    NOTE:

    IMPORTANT! If the Wireless Control Module/Wireless Ignition Node has been replaced, make sure the programming procedure for the module has been performed in accordance with the service information.

RENDER: 1.0x

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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.