Diagnostic Test

WARNING: This page is about a different car, the 2016 RAM 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read TCM DTCs and record on the repair order.
2. Record the Event Data and Environmental Data.
3. With the scan tool, erase DTCs.
4. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. With the scan tool, read TCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Go To 10
CHECK THE OUTPUT SPEED SENSOR HARNESS CONNECTOR
1. Turn the ignition off.
2. Check the Output Speed Sensor harness connector for proper installation.
  Was the Output Speed Sensor harness connector properly connected?
  
  Yes
  - Go To 3
  No
  - Repair the connection as necessary.
  - Perform TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
CHECK THE (T72) OUTPUT SPEED SENSOR VOLTAGE SUPPLY CIRCUIT
1. Turn the ignition off.
2. Disconnect the Output Speed Sensor harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (T72) Output Speed Sensor Voltage Supply circuit.
  Is the voltage between 7.5 and 8.5 volts?
  
  Yes
  - Go To 4
  No
  - Go To 7
CHECK THE OUTPUT SPEED SENSOR
1. Measure the resistance of the Output Speed Sensor between the Output Speed Sensor terminals.
  NOTE:
  The Output Speed Sensor is a Hall Effect sensor. When measuring the resistance of the sensor, if an open reading is observed, reverse the leads of the Ohm meter and recheck.
  
  Is the resistance between 3M Ohms and 5M Ohms?
  
  Yes
  - Go To 5
  No
  - Replace Output Speed Sensor in accordance with the Service Information.
  - Perform TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
CHECK THE (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the TCM C1 harness connector.
3. Measure the resistance of the (T14) Output Speed Sensor Signal circuit between the TCM C1 harness connector and the Output Speed Sensor harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 6
  No
  - Repair the (T14) Output Speed Sensor Signal circuit for an open.
  - Perform TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
CHECK THE (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Check for continuity between ground and the (T14) Output Speed Sensor Signal circuit at the TCM C1 harness connector.
  Is there continuity between ground and the (T14) Output Speed Sensor Signal circuit?
  
  Yes
  - Repair the (T14) Output Speed Sensor Signal circuit for a short to ground.
  - Perform TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
  No
  - Go To 9
CHECK THE (T72) OUTPUT SPEED SENSOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
1. Measure the resistance of the (T72) Output Speed Sensor Voltage Supply circuit between the TCM C1 harness connector and the Output Speed Sensor harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 8
  No
  - Repair the (T72) Output Speed Sensor Voltage Supply circuit for an open.
  - Perform TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
CHECK THE (T72) OUTPUT SPEED SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
1. Check for continuity between ground and the (T72) Output Speed Sensor Voltage Supply circuit at the TCM C1 harness connector.
  Is there continuity between ground and the (T72) Output Speed Sensor Voltage Supply circuit?
  
  Yes
  - Repair the (T72) Output Speed Sensor Voltage Supply circuit for a short to ground.
  - Perform TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
  No
  - Go To 9
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all TCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all TCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read TCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Transmission Control Module (TCM) in accordance with the Service information. Refer to MODULE, TRANSMISSION CONTROL, REMOVAL .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
  No
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
  - Test complete.
CHECK WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Inspect the Output Speed Sensor for damage and contamination.
3. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
4. Wiggle the wires while checking for shorted and open circuits.
5. Check for any Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
  No
  - Test complete.