DTC P0712 [SJ6A-EL]


DTC P0712	Transmission fluid temperature (TFT) sensor circuit malfunction (short to ground)
DETECTION CONDITION	• If the TCM detects the following condition for 10 s or more, the TCM determines that the TFT sensor circuit has a malfunction. - ATF temperature 200 °C {392 °F} or more Diagnostic support note: • The MIL illuminates if the TCM detects the above malfunction condition during first drive cycle. • A PENDING CODE is not available. • FREEZE FRAME DATA is available. • The AT warning light illuminates. • The DTC is stored in the TCM memory.
POSSIBLE CAUSE	• TFT sensor malfunction • Short to ground in wiring harness between TFT sensor and TCM terminal 1J • Short to ground in wiring harness between TFT sensor and TCM terminal 1M • Damaged connector between TFT sensor and TCM • TCM malfunction


STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service Bulletins and/or on-line repair information availability. • Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT RESISTANCE OF TFT SENSOR CIRCUIT • Inspect for resistance between couple component terminals 1J and 1M (wiring harness-side). • Is resistance as shown below? - ATF temperature 10°C {50°F}: approx. 6.445 kilohms - ATF temperature 25°C {77°F}: approx. 3.5 kilohms - ATF temperature 110°C {230°F}: approx. 0.247 kilohms (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [SJ6A-EL].)	Yes	Go to the next step.
3		No	Replace the TFT sensor, then go to Step 5. (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION [SJ6A-EL].)
4	INSPECT TCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch to the LOCK position. • Disconnect the TCM connector. • Inspect for poor connection at TCM terminals 1J and 1M (such as damaged/pulled-out pins, corrosion). • Are terminals normal?	Yes	Go to Step 7.
4		No	Repair or replace the connector and/or terminal, then go to Step 7.
5	INSPECT TFT SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between couple component terminals (wiring harness-side) and body ground. - Terminal A and body ground - Terminal B and body ground • Is there continuity?	Yes	Repair or replace the wiring harness for short to ground, go to Step 7.
5		No	Go to the next step.
6	INSPECT COUPLE COMPONENT CONNECTOR FOR POOR CONNECTION • Turn the ignition switch to the LOCK position. • Disconnect the couple component connector. • Inspect for poor connection at couple component terminals A and B (such as damaged/pulled-out pins, corrosion). • Are terminals normal?	Yes	Replace the TFT sensor, then go to the next step. (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION [SJ6A-EL].)
6		No	Repair or replace the connector and/or terminal, then go to the next step.
7	VERIFY TROUBLESHOOTING OF DTC P0712 COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC from the memory using the M-MDS. • Drive the vehicle in D range and make sure that gears shift smoothly from 1GR to 6GR. • Is same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [SJ6A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SJ6A-EL].)
8		No	Troubleshooting completed.