Diagnostic Test

CHECK FOR SPEED SENSOR DTCS
1. With the scan tool, check for other transmission DTCs.
  Are there any speed sensor DTCs present?
  
  Yes
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR (T72) SENSOR SUPPLY VOLTAGE SHORT TO GROUND

Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off to the lock position.
2. Disconnect the Electrohydraulic Control Unit Assembly harness connector.
3. Disconnect the TCM C2 harness connectors.
4. Measure the resistance between ground and the (T72) Sensor Supply Voltage circuit in the TCM harness connector.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Repair the (T72) Sensor Supply Voltage circuit for a short to ground
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Go To 3
CHECK FOR A SHORT IN THE ELECTROHYDRAULIC CONTROL UNIT

Courtesy of CHRYSLER GROUP, LLC
1. Reconnect the Electrohydraulic Control Unit Assembly harness connector.
2. Measure the resistance between ground and the (T72) Sensor Supply Voltage circuit in the TCM harness connector.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Repair the Electrohydraulic Control Unit Assembly for a short to ground in accordance to the Service Information.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  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. If no problems are found, replace and program the TCM in accordance to the Service Information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL .
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .