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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 172 ((Powertrain Control Module (Pcm) - Electrical Diagnostics - 41TE Automatic Transmission)) >> DTC Troubleshooting >> P0755-2/4 Solenoid Circuit >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR RELATED DTCS 
    1. With the scan tool, read DTCs.

      Are there any Transmission Control Relay or TCM Power Input DTCs present also?

      Yes 

      No 

      • Go To  2
  2. CHECK TO SEE IF THE DTC IS CURRENT 
    1. With the scan tool, read DTCs.

      Is the status Active or is the Starts Since Set counter set at 0 for this DTC?

      Yes 

      • Go To  3

      No 

      • Go To  7
  3. CHECK THE PCM AND WIRING USING THE TRANSMISSION SIMULATOR 
    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 the (special tool #8333B, Simulator, Transmission) and the Electronic Transmission Adapter kit.
    4. Ignition on, engine not running.
    5. With the scan tool, actuate the 2/4 Solenoid.
    6. Monitor the 2/4 Solenoid LED on the Transmission Simulator.

      Did the 2/4 Solenoid LED on the Transmission Simulator blink on and off during actuation?

      Yes 

      No 

      • Go To  4
  4. CHECK THE (T19) 2/4 CONTROL CIRCUIT FOR AN OPEN 
    Fig 1: Checking 2/4 Control Circuit For An Open
    GC0149975Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the PCM C1 harness connector.
    3. Disconnect the (special tool #8333B, Simulator, Transmission) and the Electronic Transmission Adapter kit.
    4. Measure the resistance of the (T19) 2/4 Control circuit between the PCM C1 harness connector and the Solenoid/Pressure Switch Assembly harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  5
  5. CHECK THE (T19) 2/4 CONTROL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking 2/4 Control Circuit For A Short To Ground
    GC0149977Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (T19) 2/4 Control circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

      • Go To  6
  6. CHECK THE (T19) 2/4 CONTROL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 3: Checking 2/4 Control Circuit For A Short To Voltage
    GC0149978Courtesy of CHRYSLER GROUP, LLC
    1. Remove the PCM/TCM relay and with a fused jumper wire, jumper the transmission control output to B(+).
    2. Ignition on, engine not running.
    3. Measure the voltage of the (T19) 2/4 Control circuit.

      Is the voltage above 0.5 of a volt?

      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. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL . With the scan tool, perform Quick Learn.
      • Perform the 40/41TE VERIFICATION TEST. Refer to 40/41TE TRANSMISSION VERIFICATION TEST  .
  7. 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 wires 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.
    5. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply.

      Were there any problems found?

      Yes 

      No 

      • Test Complete.