Nissan Maxima Service and Repair Manual: P1723 speed sensor

Description

The secondary speed sensor detects the revolution of parking gear and generates a pulse signal. The pulse signal is sent to the TCM, which converts it into vehicle speed.

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.

VEHICLE SPEED : 10 km/h (6 MPH) or more

ACC PEDAL OPEN : More than 1.0/8

RANGE : "D" position

ENG SPEED : 450 rpm or more

Driving location : Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test.

Diagnosis Procedure

1.CHECK STEP MOTOR FUNCTION

Perform "Self Diagnostic Results" in "TRANSMISSION".

2.CHECK SECONDARY SPEED SENSOR SYSTEM

Check secondary speed sensor system. Refer to TM-60, "DTC Logic".

3.CHECK PRIMARY SPEED SENSOR SYSTEM

Check primary speed sensor system. Refer to TM-57, "DTC Logic".

4.CHECK ENGINE SPEED SIGNAL SYSTEM

Check engine speed signal system. Refer to TM-64, "DTC Logic".

5.DETECT MALFUNCTIONING ITEMS

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

    P1722 vehicle speed
    Description The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM via CAN communication line. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCE ...

    P1726 throttle control signal
    Description The electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor, etc. The actuator sends a signal to the ECM, an ...

    Other materials:

    SRS air bag system
    "AIR BAG" Warning Lamp Does Not Turn Off DIAGNOSTIC PROCEDURE 1.CHECK CONDITION OF AIR BAG MODULE Inspect for any deployed air bag modules or seat belt pre-tensioners. 2.CHECK THE AIR BAG FUSE Check 10A fuse [No. 2, located in the fuse block (J/B)]. 3.CHECK AIR BAG FUSE AGAIN Replace 10A fuse ...

    CAN communication circuit
    Diagnosis Procedure 1.CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. 2.CHECK HARNESS CON ...

    Rear power sunshade (if so equipped)
    The rear sun shade operates when the ignition switch is in the ACC or ON position. The rear sun shade switch is located on the front console. To raise the sun shade, push the upper side of the switch 1 . To lower the sun shade, push the lower side of the switch 2 . The switch ne ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2025 Copyright www.nimainfo.com
    0.0084