Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

When Monitored:

Ignition on in the run position.

Set Condition:

When the Transmission Control Module (TCM) detects two or more Shift Lever positions registering "CLOSED" for the period of 500 msec.

Possible Causes
TRS SIGNAL CIRCUITS SHORT TO VOLTAGE
TRS SIGNAL CIRCUIT SHORT TO ANOTHER TRS SIGNAL CIRCUIT
TRANSMISSION RANGE SENSOR
TRANSMISSION CONTROL MODULE (TCM)

Always perform the AS68RC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to Standard Procedure .

CHECK IF DTC IS CURRENT
NOTE:
This DTC may set if the Transmission Range Sensor has been replaced or reinstalled and not properly adjusted (calibrated). Make sure the TRS is properly adjusted in accordance to the Service Information before attempting to perform this diagnostic procedure. If the TRS was improperly adjusted, adjust as necessary and perform AS68RC VERIFICATION TEST. Refer to Standard Procedure .
1. Using the scan tool, read TCM DTCs.
2. Record the Environmental Data and any DTCs.
3. Clear DTCs.
4. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. Read TCM DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2.
  No
  - Go To 6.
CHECK THE TRANSMISSION RANGE SENSOR STATES
1. Ignition on, engine not running.
2. With the scan tool, monitor the TRS states (Open-Closed) in the following steps:
3. Slowly move the shift lever to all positions (P, R, N, D, 3, 2, 1) while noting the TRS states.
  Is there a shift position that shows more than one TRS position as "Closed"?
  
  Yes
  - Go To 4.
  No
  - Go To 3.
CHECK THE CONNECTORS
1. Turn the ignition off to the lock position.
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.
  Was there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform AS68RC VERIFICATION TEST. Refer to Standard Procedure .
  No
  - Using the schematics as a guide, check the Transmission Control Module (TCM) 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 TCM in accordance with the Service Information.
  - Perform AS68RC VERIFICATION TEST. Refer to Standard Procedure .
CHECK THE TRANSMISSION RANGE SENSOR
1. Turn the ignition off to the lock position.
2. Disconnect the TRS harness connector.
3. Ignition on, engine not running.
4. With the scan tool read the TRS states (P, R, N, D, 3, 2, 1).
  Did any of the TRS positions show as "Closed"?
  
  Yes
  - Repair the identified (P, R, N, D, 3, 2, 1) TRS Signal circuit for a short to voltage.
  - Perform AS68RC VERIFICATION TEST. Refer to Standard Procedure .
  No
  - Go To 5.
CHECK THE TRS SIGNAL CIRCUIT FOR A SHORT TO ANOTHER TRS SIGNAL CIRCUIT
1. Turn the ignition off to the lock position.
2. Disconnect the TCM C3 harness connector.
3. Measure the resistance between the two identified TRS signal circuits (P, R, N, D, 3, 2, 1) confirmed earlier.
  Is the resistance below 100k ohms?
  
  Yes
  - Repair the identified TRS Signal circuit for a short to another TRS Signal circuit.
  - Perform AS68RC VERIFICATION TEST. Refer to Standard Procedure .
  No
  - Replace and adjust the Transmission Range Sensor in accordance with the Service Information.
  - Perform AS68RC VERIFICATION TEST. Refer to Standard Procedure .
CHECK 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. Check for any Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform AS68RC VERIFICATION TEST. Refer to Standard Procedure .
  No
  - Test Complete.