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Home >> Jeep >> 2009 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 ((Transmission Control Module (TCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> P0755-2C Solenoid Circuit >> Diagnostic Test
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Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTCS 
    1. With the scan tool, check DTCs.

      Are there any TIPM TCM Power Control Circuit or TCM Power Input DTCs present?

      Yes 

      No 

      • Go to step  2
  2. CHECK TO SEE IF P0755 IS PRESENT 
    1. Turn the ignition off to the lock position.
    2. Remove the Ignition Switch Feed fuse from the TIPM.
      CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear.
      WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury.
    3. Install the Transmission Simulator 8333.
    4. Ignition on, engine not running.
    5. With the scan tool, actuate the 2C Solenoid.

      Did the 2C Solenoid LED blink on and off on the Transmission Simulator?

      Yes 

      • Go to step  3

      No 

      • Go to step  5
  3. CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY 
    1. With the Transmission simulator still connected, continue to actuate the 2C solenoid for two minutes.
    2. After two minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs.

      Did the DTC P0755 reset during the actuation test?

      Yes 

      • Go to step  5

      No 

      • Go to step  4
  4. WIGGLE TEST WITH TRANSMISSION SIMULATOR 
    1. With the Transmission simulator still connected, continue to actuate the 2C solenoid for another two minutes while wiggling the related wiring harness and connectors.
    2. With the scan tool, stop the actuation and check for transmission DTCs.

      Did the DTC P0755 reset during the actuation test?

      Yes 

      No 

  5. CHECK THE (T219) 2C SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT 
    Fig 1: Checking 2C Solenoid Control Circuit
    GC0111717Courtesy of CHRYSLER LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the Transmission Simulator 8333.
    3. Disconnect the PCM harness connectors.
    4. Measure the resistance between the (T219) 2C Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector.

      Is the resistance below 5.0 Ohms between the (T219) 2C Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector?

      Yes 

      No 

      • Go to step  6
  6. CHECK THE (T219) 2C SOLENOID CONTROL CIRCUIT FOR AN OPEN 
    Fig 2: Checking 2C Solenoid Control Circuit
    GC0111718Courtesy of CHRYSLER LLC
    1. Connect the PCM Pinout Box 8815 to the PCM C4 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 PCM Pinout Box 8815 to perform diagnosis.
    2. Measure the resistance of the (T219) 2C Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of the PCM Pinout Box 8815.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go to step  7
  7. CHECK THE (T219) 2C SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND 
    Fig 3: Checking 2C Solenoid Control Circuit
    GC0111719Courtesy of CHRYSLER LLC
    1. Measure the resistance between ground and the (T219) 2C Solenoid Control circuit.

      Is the resistance below 5.0 Ohms?

      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 PCM in accordance with the Service Information. With the scan tool, perform Quick Learn.
      • Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .