Nissan Maxima Service and Repair Manual: P1720 VSS

Description

ECM receives two vehicle speed signals via the CAN communication line. One is sent from "ABS actuator and electric unit (control unit)" via the combination meter, and the other is from TCM (Transmission control module).

ECM uses these signals for engine control.

DTC Logic

DTC DETECTION LOGIC

NOTE:

  • If DTC P1720 is displayed with DTC UXXXX first perform the trouble diagnosis for DTC UXXXX. Refer to EC-161, "DTC Logic".
  •  If DTC P1720 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to EC-393, "DTC Logic".

Nissan Maxima. DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine.
  2. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without depressing the brake pedal.
  3. Check 1st trip DTC.

Diagnosis Procedure

1.CHECK DTC WITH TCM

Check DTC with TCM.

2.CHECK DTC WITH "ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)"

3.CHECK COMBINATION METER FUNCTION

    P1715 input speed sensor
    Description ECM receives input speed sensor signal from TCM via the CAN communication line. ECM uses this signal for engine control. DTC Logic DTC DETECTION LOGIC NOTE:  If DTC P1715 ...

    P1800 vias control solenoid valve 1
    Description The VIAS control solenoid valve 1 cuts the intake manifold vacuum signal for power valve 1 control. It responds to ON/OFF signals from the ECM. When the solenoid is OFF, the vacuum ...

    Other materials:

    B2617 starter relay circuit
    Description Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication. DTC Logic DTC DETECTION LOGIC NOTE: If DTC B2617 is displ ...

    Opener operation
    To open the trunk lid, push the opener switch. To close the trunk lid, lower and push the trunk lid down securely. NOTE: You can open the trunk lid with the Intelligent Key. For additional information, refer to "NISSAN Intelligent Key" in this section. Cancel switch When the cancel ...

    Precaution
    PRECAUTIONS Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to t ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2021 Copyright www.nimainfo.com
    0.0133