P0712
DTC P0712 FLUID (OIL) TEMPERATURE SENSOR CIRCUIT - LOWCOMPONENT LOCATION
Refer to DTC P0711. P0711
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 (PCM) supplies a 5V reference voltage to the sensor, and the output voltage of the sensor changes when the ATF temperature varies. The automatic TRANSAXLE fluid (ATF) temperature provides very important data for the TCM (PCM)'s control of the Torque Converter Clutch, and is also used for many other purposes.
DTC DESCRIPTION
Refer to DTC P0711. P0711
DTC DETECTING CONDITION
DTC DETECTING CONDITION:
SPECIFICATION
Refer to DTC P0711. P0711
SCHEMATIC DIAGRAM
Refer to DTC P0711. P0711
MONITOR SCAN TOOL DATA
Refer to DTC P0711. P0711
TERMINAL & CONNECTOR INSPECTION
Refer to DTC P0711. P0711
SIGNAL CIRCUIT INSPECTION
1. Ignition ON & Engine OFF.
2. Disconnect the TRANSAXLE FLUID TEMPERATURE SENSOR connector.
3. Measure the voltage between terminal 1 of the TRANSMISSION FLUID TEMPERATURE SENSOR harness connector and chassis ground.
Specification: Approximately 5V
Specification:
4. Is voltage within specifications?
YES > Go to Component Inspection procedure.
NO > Check for short to ground in harness. Repair as necessary and Go to Verification of Vehicle Repair 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]
REFERENCE DATA:
4. Is resistance within specifications?
YES > Go to CHECK TCM (PCM).
NO > Replace TRANSAXLE FLUID TEMPERATURE SENSOR as necessary and Go to Verification of Vehicle Repair procedure.
2. CHECK TCM (PCM)
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 TCM (PCM) and check for proper operation. If the problem is corrected, replace TCM (PCM) as necessary and then go to Verification of Vehicle Repair procedure.
VERIFICATION OF VEHICLE REPAIR
Refer to DTC P0711. P0711