Nissan Maxima Service and Repair Manual: P0715 input speed sensor A

Description

The primary speed sensor detects the primary pulley revolution speed and sends a signal to the TCM.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

NOTE: Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.

Then wait at least 10 seconds before performing the next test.

1.CHECK DTC DETECTION

With CONSULT

  1.  Turn ignition switch ON.
  2.  Select "Data Monitor" in "TRANSMISSION".
  3.  Start engine and maintain the following conditions for at least 5 consecutive seconds.

With GST

Follow the procedure "With CONSULT".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to TM-126, "Wiring Diagram".

1.CHECK PRIMARY SPEED SENSOR

  1.  Start engine.
  2.  Check voltage between TCM connector terminals.

3. If OK, check the pulse when vehicle drive.

2. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND) (PART 1)

  1.  Turn ignition switch OFF.
  2.  Disconnect TCM connector and CVT unit connector.
  3.  Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side harness connector terminals.

3. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND) (PART 2)

Check continuity between TCM vehicle side harness connector terminals and ground.

4. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (PRIMARY SPEED SENSOR) (PART 1)

  1.  Turn ignition switch OFF.
  2.  Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side harness connector terminal.

5. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (PRIMARY SPEED SENSOR) (PART 2)

Check continuity between TCM vehicle side harness connector terminal and ground.

6. CHECK THE TCM SHORT

  1.  Replace with the same type of TCM. Refer to TM-168, "Exploded View".
  2.  Connect each connectors.
  3.  Perform "DTC CONFIRMATION PROCEDURE". Refer to TM-57, "DTC Logic".

7.DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

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