P0711-TRANSMISSION TEMPERATURE SENSOR PERFORMANCE





For a complete wiring diagram Refer to Section 8W.

Theory of Operation


The temperature sensor is used to sense the temperature of the transmission fluid. Transmission fluid temperature can affect shift quality, torque converter operation and when or if some diagnostics are run. A failed temperature sensor could affect the OBD diagnostics. If a problem occurs in the transmission temperature sensor circuit, transmission temperature will be based on a calculated value.


  • When Monitored:

    Continuously with the ignition on and engine running.

  • Set Condition:

    DTC will set when the transmission temperature does not reach a normal operating temperature within a given time frame. Time is variable due to ambient temperature. Approximate DTC set time is 10 to 35 minutes. The following are starting temperature to warm up times to set this DTC: starting temperature -40° C (-40° F) warm up time 35 minutes, starting temperature -28° C ( -20° F) 25 minutes, starting temperature -6.6° C (20° F) 20 minutes, starting temperature 15.5 ° C (60° F) 10 minutes. When the fault is set, calculated temperature is substituted for measured temperature, however the DTC is stored only after three consecutive occurrences.


Possible Causes
  
RELATED TRANSMISSION TEMPERATURE DTC'S PRESENT
  
TRANSMISSION TEMPERATURE SENSOR
  
POWERTRAIN CONTROL MODULE
  

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)



Diagnostic Test

1.DETERMINE IF RELATED TRANSMISSION TEMPERATURE DTCS ARE PRESENT



Are there any other Transmission Temperature Sensor related DTCs present?

Yes
  • Refer to the Transmission category and perform the appropriate diagnostic procedure.


No
  • Go To 2

2.CHECK TO SEE IF DTC IS ACTIVE



Is the status Active for this DTC or is the STARTS SINCE SET counter 2 or less?

Yes
  • Go To 3


No
  • Go To 4

3.PCM AND WIRING



CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear.


WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death.


NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition.








Do the readings on the Transmission Simulator match the scan tool readings ± 0.2 volts?

Yes


No
  • Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM per the Service Information. With the scan tool, perform QUICK LEARN.
  • Perform 42RLE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)

4.INTERMITTENT WIRING AND CONNECTORS






Were there any problems found?

Yes


No
  • Test Complete.