Nissan Sentra manuals

Nissan Sentra Service Manual: P0715 Input speed sensor A

DTC Logic

DTC DETECTION LOGIC

DTC

CONSULT screen terms (Trouble diagnosis content)

DTC detection condition

Possible causes

P0715 INPUT SPEED SENSOR A (Input/Turbine Speed Sensor A Circuit) The primary speed sensor value is less than 150 rpm continuously for 5 seconds or more under the following diagnosis conditions:

Diagnosis conditions

  • Secondary pulley speed: 1,000 rpm or more
  • TCM power supply voltage: More than 11 V
  • Harness or connector (Primary speed sensor circuit is open or shorted)
  • Primary speed sensor
The primary speed sensor value is 240 rpm or less continuously for 500 msec or more under the following diagnosis conditions:

Diagnosis conditions

  • 10-msec-ago primary pulley speed: 1,000 rpm or more
  • TCM power supply voltage: More than 11 V

DTC CONFIRMATION PROCEDURE

CAUTION:

Be careful of the driving speed.

1.PREPARATION BEFORE WORK

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

>> GO TO 2.

2.CHECK DTC DETECTION

  1. Start the engine.
  2. Drive the vehicle.
  3. Maintain the following conditions for 10 seconds or more.

Selector lever : “L” POSITION

Vehicle speed : 40 km/h (25 MPH) or more

  1. Stop the vehicle.
  2. Check the first trip DTC.

Is “P0715” detected? YES >> Go to TM-178, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK PRIMARY SPEED SENSOR POWER CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect primary speed sensor connector.
  3. Turn ignition switch ON.
  4. Check voltage between primary speed sensor harness connector terminal and ground.

Is the check result normal?


Is the check result normal? YES >> GO TO 2.

NO >> GO TO 6.

2.CHECK PRIMARY SPEED SENSOR GROUND CIRCUIT

Check continuity between primary speed sensor harness connector terminal and ground.

Is the check result normal?


Is the check result normal? YES >> GO TO 3.

NO >> Repair or replace malfunctioning parts

3.CHECK CIRCUIT BETWEEN PRIMARY SPEED SENSOR AND TCM (PART 1)

  1. Turn ignition switch OFF.
  2. Disconnect TCM connector.
  3. Check continuity between primary speed sensor harness connector terminal and TCM harness connector terminal.

Is the check result normal?


Is the check result normal? YES >> GO TO 4.

NO >> Repair or replace malfunctioning parts.

4.CHECK CIRCUIT BETWEEN PRIMARY SPEED SENSOR AND TCM (PART 2)

Check continuity between primary speed sensor harness connector terminal and ground.

Is the check result normal?


Is the check result normal? YES >> GO TO 5.

NO >> Repair or replace malfunctioning parts.

5.Check TCM Input signals

  1. Connect all of disconnected connectors.
  2. Lift the vehicle.
  3. Start the engine.
  4. Check frequency of primary speed sensor.

Is the check result normal?


Is the check result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Replace primary speed sensor. Refer to TM-268, "Removal and Installation".

6.DETECT MALFUNCTIONING ITEMS

Check the following items:

Is the check result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Repair or replace malfunctioning parts.

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