Diagnostic Test

2011 Jeep Liberty Renegade, Part TimeSECTION Diagnostic Test
  1. CHECK FOR SHIFT LEVER ASSEMBLY DTCS 
    1. With the scan tool, check for Shift Lever Assembly DTCs.

      Are there any Shift Lever Assembly DTCs present?

      Yes 

      • Refer to the appropriate Electrical Diagnostics article and perform the appropriate diagnostic procedure.
      • Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Go to  2.
  2. CHECK THE SHIFT LEVER ASSEMBLY CABLE FOR PROPER ADJUSTMENT 
    1. Check the Shift Lever Assembly Cable for proper adjustment in accordance with the Service Information.

      Is the Shift Lever Assembly Cable properly adjusted?

      Yes 

      • Go to  3.

      No 

      • Adjust the Shift Lever Assembly Cable in accordance with the Service Information.
      • Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .
  3. CHECK THE (T54) TEMPERATURE SENSOR-P/N SWITCH SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 1: Checking Temperature Sensor-P/N Switch Signal Circuit For Short To Ground
    GC0097944Courtesy of CHRYSLER LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the TCM C2 harness connector.
    3. Measure the resistance between ground and the (T54) Temperature Sensor-P/N Switch Signal circuit.

      Is the resistance below 5.0 ohms?

      Yes 

      • Repair the (T54) Temperature Sensor-P/N Switch Signal circuit for a short to ground.
      • Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Go to  4.
  4. CHECK THE (T54) TEMPERATURE SENSOR-P/N SWITCH SIGNAL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT 
    Fig 2: Checking Temperature Sensor-P/N Switch Signal Circuit For Short To Another Circuit
    GC0097945Courtesy of CHRYSLER LLC
    1. Disconnect the TCM C1 harness connector.
    2. Disconnect the Transmission Electrohydraulic Control Unit Assembly harness connector.
    3. Measure the resistance between the (T54) Temperature Sensor-P/N Switch Signal circuit and all other circuits in the TCM C1 and C2 harness connectors.

      Is the resistance below 5.0 ohms between the (T54) Temperature Sensor-P/N Switch Signal circuit and any other circuit(s)?

      Yes 

      • Repair the (T54) Temperature Sensor-P/N Switch Signal circuit for a short to another circuit(s).
      • Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to 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. If no problems are found, replace the TCM in accordance with the Service Information.
      • Perform NAG1 TRANSMISSION 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.