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DTC P0712 [JA5A-EL]

BME050218901208

DTC P0712 | Transaxle fluid temperature (TFT) sensor circuit malfunction (short to ground)
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DETECTION CONDITION | • If the signal from the TFT sensor is 0.088 V or less for 20 s or more, the TCM determines that there is a malfunction. Diagnostic support note: • This is a continuous monitor (CCM). • The MIL illuminates if the TCM detects the above malfunction conditions in two consecutive drive cycles.
• PENDING CODE is available.
• FREEZE FRAME DATA is available.
• The HOLD indicator light flashes.
• The DTC is stored in the TCM memory.
POSSIBLE CAUSE | • TFT sensor malfunction. • Open circuit in wiring harness between TFT sensor and TCM terminal 1F • Open circuit in wiring harness 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 DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME PID 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.
No | Go to the next step.
3 | VERIFY CURRENT INPUT SIGNAL STATUS - IS CONCERN INTERMITTENT OR CONSTANT? • Turn the ignition switch to the LOCK position. • Turn the ignition switch to the ON position (engine off). • Are the TCM terminal 1F voltage within 0.2-4.9 V? | Yes | Go to the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [AJ].)
No | Go to the next step.
4 | INSPECT TERMINAL CONDITION • Turn the ignition switch to the LOCK position. • Disconnect the terminal component No.2. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminals, then go to Step 9. • If the terminals cannot be repaired, replace the wiring harness, then go to Step 9.
No | Go to the next step.
5 | INSPECT TFT SENSOR CIRCUIT • Turn the ignition switch to the ON position (engine off). • Verify if the TCM terminal voltage changes to 4.9 V or above when the terminal component No.2 disconnected. • Does the TCM terminal voltage change? | Yes | Go to the next step.
No | Go to Step 8.
6 | INSPECT COUPLER COMPONENT (8-PIN) TERMINALS CONDITION • Turn the ignition switch to the LOCK position. • Disconnect the coupler component (8-pin) connector. • Inspect for bent coupler component (8-pin) terminals. • Is there any malfunction? | Yes | Repair or replace the connector and/or terminal.
No | Go to the next step.
7 | INSPECT COUPLER COMPONENT (8-PIN) CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between coupler component (8-pin) terminals (part-side) and body ground.

  - I and body ground
  - J and body ground

• Is there continuity?
Yes
Replace the TFT sensor, then go to Step 9.
No | Repair or replace the coupler component, then go to Step 9.
8 | INSPECT TERMINAL COMPONENT NO.2 (8-PIN) CIRCUIT FOR SHORT TO GROUND • Turn the ignition switch to the LOCK position. • Inspect for continuity between the terminal component No.2 terminal G (wiring harness-side) and body ground. • Is there continuity? | Yes | Repair or replace the wiring harness, then go to the next step.
No | Go to the next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0712 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the TCM memory using the WDS or equivalent. • Drive the vehicle under the following condition for 150 s or more.

  - Vehicle speed (VSS PID): 20 km/h {12 mph}

• Is the same DTC present?
Yes
Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION [JA5A-EL].)
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [JA5A-EL].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [JA5A-EL].)
No | DTC troubleshooting completed.