P0711

DTC P0711 TRANSAXLE FLUID TEMPERATURE SENSOR RATIONALITY





COMPONENT LOCATION

GENERAL DESCRIPTION
The automatic TRANSAXLE fluid (ATF) temperature sensor is installed in the Valve Body. This sensor uses a thermistor whose resistance changes according to the temperature changes. The TCM supplies a 5V reference voltage to the sensor, and the output voltage.

DTC DESCRIPTION
This DTC code is set when the ATF temperature output voltage is lower than a value generated by thermistor resistance, in a normal operating range, for approximately 1 second or longer. The TCM regards the ATF temperature as fixed at a value of 80° C (176° F).





DTC DETECTING CONDITION





SPECIFICATION

MONITOR SCANTOOL DATA
1. Connect scan tool to data link connector (DLC).
2. Engine "ON".





3. Monitor the "TRANSAXLE FLUID TEMPERATURE SENSOR" parameter on the scan tool.
Specification: Increasing Gradually
4. Does "TRANSAXLE FLUID TEMPERATURE SENSOR" follow the reference data?
YES Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "Verification Vehicle Repair" procedure.
NO Go to "W/Harness Inspection" procedure.

TERMINAL & CONNECTOR INSPECTION
1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?
YES Repair as necessary and go to "Verification vehicle Repair" procedure.
NO Go to "Component inspection" procedure.

COMPONENT INSPECTION
1. CHECK "TRANSAXLE FLUID TEMPERATURE SENSOR"
1) Ignition "OFF".
2) Disconnect the "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.
3) Measure the resistance between terminals "1" and "2" of the "TRANSMISSION FLUID TEMPERATURE SENSOR".
Specification: Refer to "Reference data"





[REFERENCE DATA]





4) Is resistance within specifications?
YES Go to "CHECK PCM/TCM" as below.
NO Replace "TRANSAXLE FLUID TEMPERATURE SENSOR" as necessary and Go to "Verification Vehicle Repair" procedure.
2. CHECK TCM
1) Ignition "ON" & Engine "OFF".
2) Connect "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.
3) Install scan tool and select a SIMU-SCAN.





4) Simulate voltage (0 -> 5V) to "TRANSMISSION FLUID TEMPERATURE SENSOR" signal circuit.
5) Is FLUID TEMP. SENSOR signal value changed according to simulation voltage?
YES Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Using a scan tool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions.
4. Are any DTCs present?
YES Go to the applicable troubleshooting procedure.
NO System performing to specification at this time.