Diagnostic Test

1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.

Did the DTC return?

Yes 

• Go To  2

No 

• Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .

1. Turn the ignition switch on.
2. Record the Upshift (+) and Downshift (-) switch states shown on the scan tool.
3. Turn the ignition off.
4. Disconnect the paddle switch that indicates it is pressed.
5. Turn the ignition on.
6. Did the Upshift (+) or Downshift (-) switch change state in the diagnostic scan tool.

   Does the switch change state?

   Yes 

   • Replace the Paddle Switch.
   • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .

   No 

   • Go To  3

1. Turn the ignition off.
2. Disconnect the TCM harness connector.
3. Disconnect the Paddle Switch connector.
4. Measure the resistance between ground and the (T831) Return circuit.

   Is there continuity between ground and the (T831) Return circuit?

   Yes 

   • Repair the (T831) Return circuit for a short to ground.
   • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .

   No 

   • Replace the TCM in accordance with the Service Information.

     Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL AND INSTALLATION .

   • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .