DTC P0712 [SJ6A-EL]

id050208801300

DTC P0712 | Transmission fluid temperature (TFT) sensor circuit malfunction (short to ground)
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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. • The AT warning light illuminates if the TCM detects the above malfunction condition during first drive cycle. • PENDING CODE is not available. • FREEZE FRAME DATA is available. • The DTC is stored in the TCM memory.
POSSIBLE CAUSE | • TFT sensor malfunction • TCM connector or terminal malfunction • Short to GND in wiring harness between TFT sensor and TCM terminal 1J • Short to GND in wiring harness between TFT sensor and TCM terminal 1M • Coupler component connector or terminal malfunction • TCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA been recorded on the repair order? | Yes | Go to the next step.
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 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.
No | Go to the next step.
3 | INSPECT RESISTANCE OF TFT SENSOR CIRCUIT • Inspect for resistance between coupler 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.
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.
No | Repair or replace the connector and/or terminal, then go to Step 7.
5 | INSPECT TFT SENSOR SIGNAL CIRCUIT FOR SHORT TO GND • Inspect for continuity between coupler component terminals (wiring harness-side) and body GND. ― Terminal A and body GND ― Terminal B and body GND • Is there continuity? | Yes | Repair or replace the wiring harness for short to GND, go to Step 7.
No | Go to the next step.
6 | INSPECT COUPLER COMPONENT CONNECTOR FOR POOR CONNECTION • Turn the ignition switch to the LOCK position. • Disconnect the coupler component connector. • Inspect for poor connection at coupler 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].)
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 using the M-MDS. • Perform the following procedure to ensure that the DTC has been resolved: 1. Start the engine. 2. Warm-up the engine and transmission. 3. Drive the vehicle in D range and make sure that the gears shift smoothly from 1GR to 6GR. • Is the same DTC present? | Yes | Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)
No | Go to the next step.
8 | VERIFY NO DTC HAS BEEN PRESENTED • Perform the “Reading DTCs Procedure”. (See AUTOMATIC TRANSMISSION ON-BOARD DIAGNOSTIC FUNCTION [SJ6A-EL].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SJ6A-EL].)
No | DTC troubleshooting completed.