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Home >> Jeep >> 2009 >> Commander Overland, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> (Powertrain Control Module (Pcm) - Electrical Diagnostics - 545RFE Automatic Transmission) >> DTC Troubleshooting >> P0706-Transmission Range Sensor Rationality >> Diagnostic Test

Diagnostic Test

  1. CHECK IF P0706 DTC IS CURRENT 
    1. Using the scan tool, perform the Shift Lever Position Test.

      Select the test outcome from the following:

      Test passes: 

      • Go To  6

      Test fails with Error Code: 

      • Go To  2

      Test fails without Error Code: 

  2. CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY 
    1. Turn the ignition off to the lock position.
    2. Remove the Starter Relay.
      CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear.
      WARNING: The Starter Relay must be removed from the PDC. Failure to do so may result in possible serious or fatal injury.
      NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition.
    3. Install Transmission Simulator 8333.
    4. Ignition on, engine not running.
    5. Using the scan tool, perform the Shift Lever Position Test.
    6. When the scan tool instructs you to put the Gear Selector in a particular position, you must do so using the selector switch on the Transmission Simulator.
    7. The LED for the gear position in question must be illuminated on the Transmission Simulator prior to pressing "ENTER" on the scan tool.
      NOTE: When the scan tool requests the O/D off button be depressed, you must use the O/D OFF button in the vehicle or you will fail the Shift Lever Position Test with an error code 11 or OD-TOW/HALL STUCK OPEN.
      NOTE: If the Shift Lever Position test fails, make sure to note the identification of the TRS Signal circuit for future reference.

      Did the Shift Lever Position test pass?

      Yes 

      • Remove the Oil Pan and Main Valve Body Assembly in accordance with the Service Information. Check for metal debris on top of the Solenoid/TRS Assembly and the manual valve code plate. If debris is present, determine the cause of the debris and repair the transmission as necessary. If no problems are found, replace the Transmission Solenoid/TRS Assembly in accordance with the Service Information.
      • Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

      No 

      • Go To  3
  3. CHECK THE TRS SIGNAL CIRCUITS FOR AN OPEN 
    1. Turn the ignition off to the lock position.
    2. Disconnect the Transmission Simulator 8333.
    3. Disconnect the PCM harness connectors and install the PCM Pinout Box 8815.
      CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box 8815 to perform diagnosis.
    4. Measure the resistance of the identified (T41, T42, T3, T1, or T2 (C1-C5) TRS Signal circuit, from the Transmission Solenoid/TRS Assembly harness connector to the appropriate terminal of the PCM Pinout Box 8815.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  4
  4. CHECK THE TRS SIGNAL CIRCUITS FOR A SHORT TO GROUND 
    1. Measure the resistance between ground and the identified T1, T2, T3, T41, or T42 (C1-C5) TRS Signal circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

      • Go To  5
  5. CHECK THE TRS SIGNAL CIRCUITS FOR A SHORT TO ANOTHER CIRCUIT 
    1. Measure the resistance between the identified T1, T2, T3, T41, or T42 (C1-C5) TRS Signal circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector.

      Is the resistance below 100k Ohms between the identified T1, T2, T3, T41, or T42 (C1-C5) TRS Signal circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector?

      Yes 

      No 

      • Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Using the scan tool, perform Quick Learn.
      • Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  6. CHECK WIRING AND CONNECTORS 
    1. The conditions necessary to set the DTC are not present at this time.
    2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
    3. Wiggle the wiring and connectors while checking for shorted and open circuits.
    4. Using the scan tool, check the Event Data to help identify the conditions in which the DTC was set.

      Were there any problems found?

      Yes 

      No 

      • Test Complete.
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