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 RELATED ENGINE DTCs
1. With the scan tool, read PCM DTCs.
  Are any Engine Coolant DTCs set?
  
  Yes
  - Repair Engine Coolant DTCs. Refer to DTC INDEX - 2500 HD & 3500 HD .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR RELATED TRANSMISSION DTCs
1. With the scan tool, read TCM DTCs and record on the repair order.
  Are any other Transmission temperature sensor DTCs?
  
  Yes
  - Perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX - AS69RC AUTOMATIC TRANSMISSION - 3500 HD
  No
  - Go To 3
CHECK FOR AN ACTIVE DTC
1. Record the Event Data and Environmental Data.
2. With the scan tool, erase DTCs
3. 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.
4. Read TCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 4
  No
  - Go To 11
COMPARE THE TRANSMISSION TEMPERATURE TO ENGINE COOLANT TEMPERATURE
NOTE:
To perform the following test, the actual Engine Coolant and Transmission Fluid temperature must be at or below 29.4° C (85° F).
1. With the scan tool, read the Transmission Fluid and Engine Coolant temperatures.
  Is the Transmission Fluid temperature within 5° C (9° F) of the Engine Coolant temperature?
  
  Yes
  - Go To 5
  No
  - Go To 8
CHECK THE TRANSMISSION TEMPERATURE RATE OF INCREASE
NOTE:
To perform the following test, the Engine Coolant and Transmission Fluid temperature must be at or below 29.4° C (85° F).

CAUTION:
Apply the parking brake.
1. Start the engine.
2. Firmly apply the brakes and shift into DRIVE.
3. Allow the engine to idle in DRIVE with the brakes applied.
  NOTE:
  If the Transmission temperature sensor is working properly, the Transmission temperature should rise at least 8° C (15° F) within a ten minutes.
4. With the scan tool, read the Transmission Temperature for 10 minutes.
  Did the Transmission temperature increase at a steady rate and rise at least 8° C (15° F) over a 10 minute period?
  
  Yes
  - Go To 11
  No
  - Go To 6
CHECK THE (T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT
1. Turn the ignition off.
2. Disconnect the Transmission Assembly C1 harness connector.
3. Turn the ignition on.
4. With the scan tool, read the Transmission Oil Temperature.
  Does the Transmission Oil Temperature read -40° C (-40° F) ± 2° C (4° F)?
  
  Yes
  - Go To 7
  No
  - Perform the diagnostic procedure for P0713-TRANSMISSION TEMPERATURE SENSOR 1 HIGH as if the DTC is active. Refer to P0713-00-TRANSMISSION FLUID TEMPERATURE SENSOR A CIRCUIT HIGH .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
CHECK THE (T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Connect a jumper wire between the (T54) Transmission Temperature Signal circuit and the (T23) Sensor Ground circuit in the Transmission Solenoid Assembly C1 harness connector.
3. Turn the ignition on.
4. With the scan tool, monitor the Transmission Oil Temperature.
  Does the Transmission Oil Temperature read 200° C (392° F) ± 2° C (4° F)?
  
  Yes
  - Go To 8
  No
  - Perform the diagnostic procedure for P0712-TRANSMISSION TEMPERATURE SENSOR 1 LOW as if the DTC is active. Refer to P0712-00-TRANSMISSION FLUID TEMPERATURE SENSOR A CIRCUIT LOW .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .

CHECK THE TRANSMISSION TEMPERATURE SENSOR

Turn the ignition off
Reconnect the Transmission Assembly C1 harness connector.
Disconnect the TCM C2 harness connector.

Measure the resistance of the Transmission Temperature Sensor between the (T54) Transmission Temperature Signal circuit and the (T23) Sensor ground circuit at the TCM C2 harness connector.

TYPICAL VALUES FOR TRANSMISSION TEMPERATURE SENSOR
TEMPERATURE	APPROXIMATE OHM
-30° C (-22° F)	44000 Ohms ± 6600
10° C (50° F)	6453.0 Ohms ± 645
110° C (230° F)	247 Ohms ± 16
145° C (293° F)	111 Ohms ± 6

Using the table above, compare the Temperature Sensor temperature to the correlating resistance value.
Is the resistance within the specified range when the sensor is at the given temperature?

Yes
- Go To 9.
No
- Remove the Transmission Oil Pan and inspect the internal Transmission harness, terminals, and connectors for corrosion, damage, or pushed out terminals. If no problems are found, replace the Transmission Temperature Sensor in accordance with the Service Information.
- Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .

CHECK CIRCUITS FOR HIGH RESISTANCE
1. Remove the Transmission Oil Pan and disconnect the Transmission Sump Temperature sensor.
2. Measure the resistance of the Transmission Temperature Signal circuit between the TCM C2 harness connector and the Transmission Sump Temperature sensor harness connector.
3. Measure the resistance of the (T23) Trans Temp Return circuit between the TCM C2 harness connector and the Transmission Sump Temperature sensor harness connector.
  Is the resistance below 3.0 Ohms for both measurements?
  
  Yes
  - Go To 10
  No
  - Repair the effected circuit for high resistance.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
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. 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 any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to AS69RC TRANSMISSION VERIFICATION TEST .
  No
  - Test complete.