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DTC P0712 [JA5AX-EL]

id050206801300

DTC P0712 | Transaxle fluid temperature (TFT) sensor circuit malfunction (short to ground)
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DETECTION CONDITION | • Signal from TFT sensor is 0.088 V or less for 20 s or more. Diagnostic support note: • This is a continuous monitor (CCM). • MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles. • PENDING CODE is available. • FREEZE FRAME DATA is available. • AT warning light indication. • DTC is stored in TCM memory.
POSSIBLE CAUSE | • TFT sensor malfunction. • Open circuit between TFT sensor and TCM terminal 1F • Open circuit between TFT sensor and TCM terminal 1B • Damaged connectors between TFT sensor and TCM • TCM malfunction

## Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME PID DATA been recorded? | Yes | Go to next step.
No | Record FREEZE FRAME PID DATA on repair order, then go to next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Bulletins and/or on-line repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to available repair information. • If vehicle is not repaired, go to next step.
No | Go to next step.
3 | VERIFY CURRENT INPUT SIGNAL STATUS - IS CONCERN INTERMITTENT OR CONSTANT? • Turn ignition key to OFF. • Connect voltmeter to TCM terminal 1F. • Turn ignition key to ON (engine OFF). • Are TCM terminal voltage within 0.2-4.9 V? | Yes | Go to intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L8, LF, L3].)
No | Go to next step.
4 | INSPECT TERMINAL CONDITION • Turn ignition key to OFF. • Disconnect terminal component No.2. • Inspect bent terminals. • Is there any malfunction? | Yes | Repair or replace terminals, then go to Step 9. • If terminals cannot be repaired, replace harness, then go to Step 9.
No | Go to next step.
5 | INSPECT TFT SENSOR CIRCUIT • Turn ignition key to ON (engine OFF). • Verify if TCM terminal voltage changes to 4.9 V or above when terminal component No.2 disconnected. • Does TCM terminal voltage change? | Yes | Go to next step.
No | Go to Step 8.
6 | INSPECT COUPLER COMPONENT (8-PIN) TERMINALS CONDITION • Turn ignition key to OFF. • Disconnect coupler component (8-pin) connector. • Inspect bent coupler component (8-pin) terminals. • Is there any malfunction? | Yes | Repair or replace connector and/or terminal.
No | Go to next step.
7 | INSPECT COUPLER COMPONENT (8-PIN) CIRCUIT FOR SHORT TO GROUND • Check continuity between coupler component (8-pin) terminals (part-side) and body ground. - I and body ground - J and body ground • Is there any continuity? | Yes | Replace TFT sensor, then go to Step 9. (See TRANSAXLE FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION [JA5AX-EL].)
No | Repair or replace coupler component, then go to Step 9.
8 | INSPECT TERMINAL COMPONENT NO.2 (8-PIN) CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Check continuity between terminal component No.2 terminal G (harness-side) and body ground. • Is there any continuity? | Yes | Repair or replace harness, then go to next step.
No | Go to next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0712 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from memory using WDS or equivalent. • Drive vehicle under following condition for 150 s or more. - Vehicle speed (VSS PID): 20 km/h {12 mph} • Is same DTC present? | Yes | Replace TCM, then go to next step. (See TCM REMOVAL/INSTALLATION [JA5AX-EL].)
No | Go to next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [JA5AX-EL].) • Is there any DTC present? | Yes | Go to applicable DTC inspection.
No | Troubleshooting completed.