Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF THE DTC IS CURRENT
1. With the scan tool, read DTCs.
  Is the status Active or is the Starts Since Set counter 0 for this DTC?
  
  Yes
  - Go To 2.
  No
  - Go To 6.
CHECK THE PCM/TCM RELAY
1. Turn the ignition off to the lock position.
2. Disconnect the PCM/TCM Relay.
3. Install a substitute relay.
4. Ignition on, engine not running.
5. With the scan tool, read DTCs.
  Is the status Active or is the Starts Since Set counter 0 for this DTC?
  
  Yes
  - Go To 3.
  No
  - Replace the PCM/TCM Relay.
  - Refer to STANDARD PROCEDURE and perform the 68RFE TRANSMISSION VERIFICATION TEST.
CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

Fig 1: Checking Transmission Control Output Circuit For A Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Remove the Transmission Control Relay.
2. Disconnect the PCM C2 harness connector.
3. Ignition on, engine not running.
4. Measure the voltage at the (T16) Transmission Control Output circuit in the Transmission Control Relay connector.
  Is the voltage above 0.5 of a volt?
  
  Yes
  - Go To 4.
  No
  - Go To 5.
CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY

Fig 2: Checking Transmission Output Circuit For Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off to the lock position.
2. Disconnect the Transmission Solenoid/TRS Assembly harness connector.
3. Ignition on, engine not running.
4. Measure the voltage of the (T16) Transmission Control Output circuit on the appropriate terminal of the PCM C2 harness connector.
  Is the voltage above 0.5 of a volt?
  
  Yes
  - Repair the (T16) Transmission Control Output circuit for a short to voltage.
  - Refer to STANDARD PROCEDURE and perform the 68RFE TRANSMISSION VERIFICATION TEST.
  No
  - Replace the Transmission Solenoid/TRS Assembly in accordance with the Service Information.
  - Refer to STANDARD PROCEDURE and perform the 68RFE TRANSMISSION VERIFICATION TEST.
CHECK THE (T15) TRANSMISSION CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

Fig 3: Checking Transmission Control Circuit For Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Measure the voltage of the (T15) Transmission Control circuit.
  Is the voltage above 0.5 of a volt?
  
  Yes
  - Repair the (T15) Transmission Control circuit for a short to voltage.
  - Refer to STANDARD PROCEDURE and perform the 68RFE TRANSMISSION VERIFICATION TEST.
  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.
  - Refer to STANDARD PROCEDURE and perform the 68RFE TRANSMISSION VERIFICATION TEST.
CHECK WIRING AND CONNECTORS
1. The conditions necessary to set this 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.
  Where there any problems found?
  
  Yes
  - Repair as necessary.
  - Refer to STANDARD PROCEDURE and perform the 68RFE TRANSMISSION VERIFICATION TEST.
  No
  - Test Complete.