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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1665 (66RFE Automatic Transmission - DTCS P0218 To P0870 - 2500 Hd) >> DTC Troubleshooting >> P0706-Transmission Range Sensor Rationality >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE CONDITION 
    1. With the scan tool, perform the Shift Lever Position Test.

      Select the test outcome from the following:

      Test passes: 

      • Go To  7

      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 TRANSMISSION VERIFICATION TEST. Refer to 66RFE TRANSMISSION VERIFICATION TEST .
  2. CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY OPERATION 
    1. Turn the ignition off.
    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. Failure to do so can result in possible serious or fatal injury.

    3. Install the Transmission Simulator (special tool #8333B, Simulator, Transmission).
    4. Turn the ignition on.
      NOTE:

      When the instructions on the scan tool say to put the shifter into a particular position, use the selector switch on the Transmission Simulator instead of the Shift Lever.

    5. With the scan tool, perform the Shift Lever Position Test.
    6. The LED for the gear position in question must illuminate on the Transmission Simulator prior to pressing "ENTER" on the scan tool.
      NOTE:

      When the instructions on the scan tool request the O/D OFF button be pressed, use the O/D OFF button inside the vehicle. Otherwise, the Shift Lever Position Test will fail 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 TRANSMISSION VERIFICATION TEST. Refer to 66RFE TRANSMISSION VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE TRS SIGNAL CIRCUITS FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the Transmission Simulator (special tool #8333B, Simulator, Transmission).
    3. Disconnect the PCM C1 harness connector.
      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 GPEC Diagnostic Adaptor to perform the diagnosis.

    4. Important:  The GPEC Diagnostic Adaptor can add up to 1.5 Ohms of resistance to the circuit.
    5. Connect the (special tool #10436, Adapter, GPEC Diagnostic) to the appropriate PCM harness connector.
    6. Measure the resistance of the noted (T1, T2, T3, T41 or T42) TRS Signal circuit from the Transmission Solenoid/TRS Assembly harness connector to the appropriate terminal of the GPEC Diagnostic Adaptor.

      Is the resistance above 3.0 Ohms?

      Yes 

      No 

      • Go To  4
  4. TRS SIGNAL CIRCUIT SHORT TO GROUND 
    1. Measure the resistance between ground and the noted (T41, T42, T3, T1 or T2) TRS Signal circuit. Check for continuity between ground and the noted (T41, T42, T3, T1 or T2) TRS Signal circuit at the Transmission Solenoid/TRS Assembly harness connector.

      Is there continuity between ground and the noted (T41, T42, T3, T1 or T2) TRS Signal circuit?

      Yes 

      • Repair the noted (T41, T42, T3, T1, or T2 (C1-C5) TRS Signal circuit for a short to ground.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to 66RFE TRANSMISSION VERIFICATION TEST .

      No 

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

      Is there continuity between the noted (T1, T2, T3, T41, or T42) TRS Signal circuit and any other circuit?

      Yes 

      • Repair the noted (T41, T42, T3, T1, or T2 (C1-C5) TRS Signal circuit for a short to another circuit.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to 66RFE TRANSMISSION VERIFICATION TEST .

      No 

      • Go To  6
  6. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all PCM harness connectors.
      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 GPEC Diagnostic Adaptor to perform the diagnosis.

    2. Important:  The GPEC Diagnostic Adaptor can add up to 1.5 Ohms of resistance to the circuit.
    3. Connect the (special tool #10436, Adapter, GPEC Diagnostic) to the appropriate PCM harness connector.
    4. Disconnect all related in-line harness connections (if equipped).
    5. Disconnect the related component harness connectors.
    6. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    7. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    8. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    9. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    10. With the scan tool, erase DTCs.
    11. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    12. With the scan tool, read PCM DTCs.

      Did the DTC return?

      Yes 

      No 

  7. 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 wires while checking for shorted and open circuits.
    4. Check for any Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      No 

      • Test complete.
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