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.

CHECK DTCS
1. With the scan tool, read DTCs.
  Are any TCM Power Control Circuit or TCM Power Input DTCs present?
  
  Yes
  - Perform the appropriate diagnostic procedure.
  No
  - Go To 2
CHECK IF DTC P0750 IS PRESENT
1. Ignition ON, Engine Not Running.
2. With the scan tool, erase all Transmission DTCs.
3. Turn the ignition OFF.
4. 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. Failure to do so can result in possible serious or fatal injury.
5. Install the Transmission Simulator (special tool #8333B, Simulator, Transmission).
6. Ignition ON, Engine Not Running.
7. With the scan tool, actuate the L/R Solenoid.
8. Monitor the L/R Solenoid LED on the Transmission Simulator.
  Did the L/R Solenoid LED on the Transmission Simulator blink on and off?
  
  Yes
  - Go To 3
  No
  - Go To 5
CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY
1. With the Transmission Simulator connected, continue to actuate the L/R solenoid for two minutes.
2. After two minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs.
  Did DTC P0750 reset during the actuation test?
  
  Yes
  - Go To 5
  No
  - Go To 4
CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY
1. With the Transmission Simulator connected, continue to actuate the L/R solenoid for another two minutes while wiggling the related wiring harness and connectors.
2. Stop the actuation and check for transmission DTCs.
  Did DTC P0750 reset during the actuation test?
  
  Yes
  - Repair wiring harness or connectors as necessary.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Transmission Solenoid/TRS Assembly in accordance with the Service Information. Note: Do NOT replace the entire Valve Body.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (T20) L/R SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT
1. Turn the ignition OFF.
2. Disconnect the Transmission Simulator (special tool #8333B, Simulator, Transmission).
3. Disconnect the PCM harness connectors.
4. Measure the resistance between the (T20) L/R Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector.
  Is the resistance below 5.0 ohms between the (T20) L/R Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector?
  
  Yes
  - Repair the (T20) L/R Solenoid Control circuit for a short to another circuit(s).
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
CHECK THE (T20) L/R SOLENOID CONTROL CIRCUIT FOR AN OPEN
1. Measure the resistance of the (T20) L/R Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of the PCM C1 harness connector.
  Is the resistance above 5.0 ohms?
  
  Yes
  - Repair the (T20) L/R Solenoid Control circuit for an open.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 7
CHECK THE (T20) L/R SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (T20) L/R Solenoid Control circuit.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Repair the (T20) L/R Solenoid Control circuit for a short to ground.
  - Perform the 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 and program the PCM in accordance with the Service Information. With the scan tool, perform a Quick Learn.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .