Diagnostic Test

CHECK FOR ENGINE DTCS
1. Using the scan tool, read PCM DTCs.
  Are there any Engine Temperature Sensor DTCs present?
  
  Yes
  - Refer to DTC INDEX and perform the appropriate diagnostic procedure.
  - Refer to STANDARD PROCEDURE and perform the CVT VERIFICATION TEST.
  No
  - Go To 2.
CHECK TO SEE IF THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
1. Using the scan tool, read Transmission DTCs.
  Is the status Active for this DTC or is the Starts Since Set counter 2 or less?
  
  Yes
  - Go To 3.
  No
  - Go To 7.
IDENTIFY THE SETTING CONDITION
NOTE:
The vehicle must be completely cooled for a minimum period of 8 hours for the following test procedure.
1. With the scan tool monitor the Transmission Temperature while test driving the vehicle.
  NOTE:
  It may take up to 10 to 1-2 minutes of continuous driving to accurately test the Transmission Temperature Sensor.
  
  Did the Transmission Temperature stay the same or increase a very limited amount?
  
  Yes
  - Go To 6.
  No
  - Go To 4.
CHECK THE TRANSMISSION TEMPERATURE SENSOR
Did the TCM set a one trip DTC during the previous test drive?

Yes
- Go To 5.
No
- Go To 7.
COMPARE TRANSMISSION TEMPERATURE TO OTHER TEMPERATURES
1. With the scan tool compare the Transmission Temperature to other Temperature sensors such as Engine Coolant, Intake, Oil Temperature.
  Is the Transmission Temperature within 40° C (104° F) of the other temperatures?
  
  Yes
  - 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 any Service Bulletins for possible causes that may apply. If no problems are found, replace the TCM in accordance with the Service Information.
  - Refer to STANDARD PROCEDURE and perform the CVT VERIFICATION TEST.
  No
  - Replace the Transmission Temperature Sensor (Valve Body) in accordance with the Service Information.
  - Refer to STANDARD PROCEDURE and perform the CVT VERIFICATION TEST.

CHECK THE (T54) TRANSMISSION TEMPERATURE SENSOR

Temperature Sensor Resistive Values Chart
Transmission Temperature	Resistive Value Compared to Temperature (± 10%)
20° C (68° F)	2.5k to 6.5k Ohms
80° C (176° F)	0.3k to 0.9k Ohms

Fig 1: Checking Transmission Temperature Sensor Signal Circuit

Courtesy of CHRYSLER GROUP, LLC

Start the engine and allow to obtain normal operating temperature (approximately 10 min. of engine run time).
Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Measure the resistance between the (T54) Transmission Temperature Sensor Signal circuit and the (T13) Sensor Ground circuit in the TCM C2 harness connector.
Is the resistance within the desired range listed on the above chart?

Yes
- 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 any Service Bulletins for possible causes that may apply. If no problems are found, replace the TCM in accordance with the Service Information.
- Refer to STANDARD PROCEDURE and perform the CVT VERIFICATION TEST.
No
- Replace the Transmission Temperature Sensor (Valve Body) in accordance with the Service Information.
- Refer to STANDARD PROCEDURE and perform the CVT VERIFICATION TEST.

INTERMITTENT 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.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Refer to STANDARD PROCEDURE and perform the CVT VERIFICATION TEST.
  No
  - Test Complete.