LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2064 (Continuously Variable Transmission (CVT)) >> DTC P0715 Input Speed Sensor Circuit (PRI Speed Sensor) >> Diagnostic Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Procedure

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK INPUT SIGNALS 

    With CONSULT-III 

    1. Start engine.
    2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
    3. Start vehicle and read out the value of "PRI SPEED SEN".
    PRI SPEED SEN DISPLAY VALUE

    Item name Condition Display value
    PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed.

    OK or NG 

    OK: GO TO  6.

    NG: GO TO  2.

  2. CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) 
    1. Start engine.
    2. Check voltage between TCM connector terminals.
      TCM CONNECTOR TERMINALS

      Item Connector Terminal Data (Approx.)
      TCM F57 46 - 42 5.0 V
    3. Check the pulse with CONSULT-IIIor oscilloscope, when vehicle cruises.
    INPUT AND PRIMARY SPEED SENSOR CONDITION

    Name Condition
    Input speed sensor (Primary speed sensor) When running at 20 km/h (12 MPH) in M1 position with the closed throttle position signal OFF, use the CONSULT-IIIpulse frequency measuring function.
    CAUTION: Connect the data link connector to the vehicle-side diagnosis connector.
    VOLTAGE REFERENCE CHART

    Item Connector Terminal Name Data (Approx.)
    TCM F57 38 Input speed sensor (Primary speed sensor) 660 Hz
    Fig 1: Checking Voltage Between TCM Connector Terminals
    G04916081Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  6.

    NG - 1: Battery voltage is not supplied: GO TO  3.

    NG - 2: Battery voltage is supplied, but there is a malfunction in the frequency: GO TO  4.

  3. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND) 
    1. Turn ignition switch OFF.
    2. Disconnect TCM connector and CVT unit harness connector.
    3. Check continuity between TCM connector terminals and CVT unit harness connector terminals.
      TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND SENSOR GROUND)

      Item Connector Terminal Continuity
      TCM F57 42 Yes
      CVT unit harness connector F30 19
      TCM F57 46 Yes
      CVT unit harness connector F30 20
      Fig 2: Checking Continuity Between TCM Connector Terminals And CVT Unit Harness Connector Terminals
      G04916082Courtesy of NISSAN MOTOR CO., U.S.A.
    4. If OK, check harness for short to ground and short to power.
    5. Reinstall any part removed.

    OK or NG 

    OK: GO TO  6.

    NG: Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR [INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)] 
    1. Turn ignition switch OFF.
    2. Disconnect TCM connector and CVT unit harness connector.
    3. Check continuity between TCM connector terminal and CVT unit harness connector terminal.
      TCM AND CVT UNIT HARNESS CONNECTOR [INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)]

      Item Connector Terminal Continuity
      TCM F57 38 Yes
      CVT unit harness connector F30 22
      Fig 3: Checking Continuity Between TCM Connector Terminal And CVT Unit Harness Connector Terminal
      G04916083Courtesy of NISSAN MOTOR CO., U.S.A.
    4. If OK, check harness for short to ground and short to power.
    5. Reinstall any part removed.

    OK or NG 

    OK: GO TO  5.

    NG: Repair open circuit or short to ground or short to power in harness or connectors.

  5. CHECK THE TCM SHORT 

    Replace same type TCM, perform self-diagnosis check. Erase self-diagnostic results and then drive the vehicle [10 km/h (6 MPH) or more], perform self-diagnosis check. Refer to "DTC CONFIRMATION PROCEDURE "

    Is the "P0715 INPUT SPD SEN/CIRC" detected again? 

    YES: Replace the transaxle assembly. Refer to "REMOVAL AND INSTALLATION ".

    NO: Replace TCM. Refer to "PRECAUTIONS FOR TCM AND CVT ASSEMBLY REPLACEMENT ".

  6. CHECK DTC 

    Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO  7.

  7. CHECK TCM 
    1. Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".
    2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    OK: INSPECTION END 

    NG: Repair or replace damaged parts.

scientia non olet · About LEMON Manuals