Diagnostic Test

WARNING: This page is about a different car, the 2009 Jeep Patriot and 2009 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
1. Using the scan tool, read Transmission DTCs.
  Is the status Active or is the Starts Since Set counter 2 or less for this DTC?
  
  Yes
  - Go to step 2
  No
  - Go to step 4
CHECK THE (T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Transmission Temperature Sensor Signal Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position.
2. Disconnect the TCM C2 harness connector.
3. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector.
4. Measure the resistance between ground and the (T54) Transmission Temperature Sensor Signal circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (T54) Transmission Temperature Sensor Signal circuit for a short to ground.
  - Perform the CVT VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Go to step 3

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 2: Checking Transmission Temperature Sensor Signal Circuit

Courtesy of CHRYSLER LLC

Reconnect all previously disconnected connectors.
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.
- Perform the CVT VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
No
- Replace the Transmission Temperature Sensor (Valve Body) in accordance with the Service Information.
- Perform the CVT VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .

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.
  - Perform the CVT VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Test Complete.