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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 431 (Powertrain Control Module (Pcm) - Electrical Diagnostics - 68RFE Automatic Transmission - 2500 Hd & 3500) >> Diagnosis And Testing >> P0706-Transmission Range Sensor Rationality >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TO SEE IF P0706 DTC IS CURRENT 
    1. With 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: 

      • Perform the Gearshift Adjustment Procedure in accordance with the Service Information.
      • Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .
  2. CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY 
    1. Turn the ignition off.
    2. Remove the Starter Relay from the PDC.
      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.

    3. Install Transmission Simulator (special tool #8333B, Simulator, Transmission).
    4. Ignition on, engine not running.
    5. With 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 TOW/HAUL 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 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  3
  3. TRS SIGNAL CIRCUIT OPEN 
    1. Turn the ignition off.
    2. Disconnect the Transmission Simulator, Miller tool #(special tool #8333B, Simulator, Transmission).
    3. Disconnect the PCM C2 harness connector.
    4. Measure the resistance of the identified (T1, T2, T3, T41, or T42) TRS Signal circuit, from the Transmission Solenoid/TRS Assembly harness connector to the appropriate terminal of the PCM C2 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Repair the identified (T41, T42, T3, T1, or T2 (C1-C5) TRS Signal circuit for an open.
      • Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  4
  4. TRS SIGNAL CIRCUIT SHORTED TO GROUND 
    1. Measure the resistance between ground and the identified (T41, T42, T3, T1, or T2 (C1-C5) TRS Signal circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Repair the identified (T41, T42, T3, T1, or T2 (C1-C5) TRS Signal circuit for a short to ground.
      • Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  5
  5. TRS SIGNAL CIRCUIT SHORTED TO OTHER CIRCUITS 
    1. Measure the resistance between the identified (T1, T2, T3, T41, or T42) TRS Signal circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector.

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

      Yes 

      • Repair the identified (T41, T42, T3, T1, or T2 (C1-C5) TRS Signal circuit for a short to other circuit(s).
      • Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      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 the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn.
      • Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .
  6. CHECK THE 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. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set.

      Were there any problems found?

      Yes 

      • Repair as necessary.
      • Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Test Complete.
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