Nissan Versa (N17): P0712 Transmission fluid temperature sensor A

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / P0712 Transmission fluid temperature sensor A

DTC Logic

DTC DETECTION LOGIC

DTC Trouble diagnosis name DTC detection condition Possible causes
P0712 Transmission Fluid Temperature Sensor "A" Circuit Low Under the following diagnosis conditions, the A/T fluid temperature identified by TCM is 180C (356F) or more continuously for 5 seconds or more.

- Diagnosis condition

- Ignition switch: ON

- TCM power supply voltage: 10 V <TCM power supply voltage <16 V
  • Harness or connector (Short circuit to ground in the fluid temperature sensor circuit)
  • A/T fluid temperature sensor

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn the ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON, and wait for 10 seconds or more.
  2. Check the first trip DTC.

Is "P0712" detected?

YES >> Go to TM, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK CIRCUIT BETWEEN TCM AND A/T UNIT

  1. Turn ignition switch OFF.
  2. Disconnect the TCM connector and A/T unit connector.
  3. Check the continuity between TCM harness connector and ground.  

Is the check result normal?

YES >> GO TO 2.

NO >> Repair or replace malfunctioning part.

2.CHECK FLUID TEMPERATURE SENSOR

Check the fluid temperature sensor. Refer to TM, "Component Inspection (A/T Fluid Temperature Sensor)".

Is the check result normal?

YES >> Check intermittent incident. Refer to GI "Intermittent Incident".

NO >> Repair or replace the malfunctioning parts.

Component Inspection (A/T Fluid Temperature Sensor)

1.CHECK A/T FLUID TEMPERATURE SENSOR

Measure the resistance between the A/T unit connector terminals.  

Is the check result normal?

YES >> INSPECTION END

NO >> There is a malfunction of the A/T fluid temperature sensor. Replace the transaxle assembly. Refer to TM, "Removal and Installation".

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