DTC P0712[FS5A-EL]

id050221801300

DTC P0712

Transaxle fluid temperature (TFT) sensor circuit malfunction (short to ground)

DETECTION CONDITION

•  If the TCM detects either of the following conditions for 150 s or more, the TCM determines that the TFT sensor circuit has a malfunction.

―  TFT sensor voltage 0.12 V or less and vehicle speed 20 km/h {12 mph} or more

Diagnostic support note:

•  This is a continuous monitor (CCM).

•  The MIL illuminates if the TCM detects the above malfunction conditions during the first drive cycle.

•  The PENDING CODE is available if the TCM detects the above malfunction condition during the first drive cycle.

•  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 transaxle connector (primary) terminal E

•  Short to ground in wiring harness between TFT sensor and transaxle connector (primary) terminal H

•  Short to ground in wiring harness between transaxle connector (primary) terminal E and TCM terminal AA

•  Damaged connectors between TFT sensor and TCM

•  TCM malfunction

DTC P0712	Transaxle fluid temperature (TFT) sensor circuit malfunction (short to ground)
DETECTION CONDITION	• If the TCM detects either of the following conditions for 150 s or more, the TCM determines that the TFT sensor circuit has a malfunction. ― TFT sensor voltage 0.12 V or less and vehicle speed 20 km/h {12 mph} or more Diagnostic support note: • This is a continuous monitor (CCM). • The MIL illuminates if the TCM detects the above malfunction conditions during the first drive cycle. • The PENDING CODE is available if the TCM detects the above malfunction condition during the first drive cycle. • 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 transaxle connector (primary) terminal E • Short to ground in wiring harness between TFT sensor and transaxle connector (primary) terminal H • Short to ground in wiring harness between transaxle connector (primary) terminal E and TCM terminal AA • Damaged connectors between TFT sensor and TCM • TCM malfunction

Diagnostic procedure

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	VERIFY CURRENT INPUT SIGNAL STATUS • Turn the ignition switch to the ON position (engine off). • Inspect the voltage at TCM terminal AA. • Is the voltage 0.06 V or more?	Yes	Go to the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING[LF, L3].)
3		No	Go to the next step.
4	INSPECT TERMINAL CONDITION • Turn the ignition switch to the LOCK position. • Disconnect the transaxle connector (primary). • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Are the terminals bent?	Yes	Repair or replace the terminals, then go to Step 8. • If the terminals cannot be repaired, replace the wiring harness, then go to Step 8.
4		No	Go to the next step.
5	INSPECT TFT SENSOR CIRCUIT • Turn the ignition switch to the ON position (engine off). • Verify that the voltage changes to 4.67 V or more at TCM terminal AA when transaxle connector (primary) is disconnected. • Does the voltage change?	Yes	Go to the next step.
5		No	Go to Step 8.
6	INSPECT TFT SENSOR CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between transaxle connector (primary) terminals (transaxle case side) and body ground. ― E and body ground ― H and body ground • Is there continuity?	Yes	Repair or replace the wiring harness, then go to Step 8.
6		No	Replace the TFT sensor, then go to Step 8. (See TRANSAXLE FLUID TEMPERATURE (TFT) SENSOR INSPECTION[FS5A-EL].)
7	INSPECT TRANSAXLE CONNECTOR CIRCUIT FOR SHORT TO GROUND • Turn the ignition switch to the LOCK position. • Inspect for continuity between transaxle connector (primary) terminal E (wiring harness-side) and body ground. • Is there continuity?	Yes	Repair or replace the wiring harness, then go to the next step.
7		No	Go to the next step.
8	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 under the following condition for 150 s or more. ― Vehicle speed (VSS PID) 20 km/h {12 mph} or more. • Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION[FS5A-EL].)
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE[FS5A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection.
9		No	DTC troubleshooting completed.