Nissan Rogue (T33) 2021-Present Service Manual: P1574 Ascd Vehicle Speed Sensor

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P1574 Ascd Vehicle Speed Sensor

DTC Description

DESCRIPTION

The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from VDC (Nissan Ariya vehicle dynamics control), and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD control. Refer to System Description.

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P1574 00

ASCD VHL SPD SEN

(ASCD VHL SPD SEN) 		Diagnosis condition Nissan Ariya Vehicle speed: More than 40 km/h (25 MPH)
Signal (terminal) —
Threshold ASCD Nissan Ariya vehicle speed signals are out of the specified range
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors (CAN communication line is open or shorted.)

  • ABS actuator and electric unit (control unit)

  • TCM

  • ECM

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

CHECK DTC PRIORITY

If DTC P1574 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

GO TO 2.

PRECONDITIONING

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

  1. Ignition switch OFF and wait at least 10 seconds.

  2. Ignition switch ON.

  3. Ignition switch OFF and wait at least 10 seconds.

>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine.

  2. Drive the Nissan Ariya vehicle at more than 40 km/h (25 MPH).

    CAUTION:

    Always drive vehicle at a safe speed.

    NOTE:

    This procedure may be conducted with the drive wheels lifted in the shop or by driving the Nissan Ariya vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

  3. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC PRIORITY

If DTC P1574 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

GO TO 2.

CHECK DTC WITH TCM

Check DTC with TCM. Refer to CONSULT Function.

Is DTC detected?

NO>>

GO TO 3.

YES>>

Perform trouble shooting relevant to DTC indicated.

CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”

Check DTC with ABS actuator and electric unit (control unit). Refer to CONSULT Function.

Is DTC detected?

NO>>

INSPECTION END

YES>>

Perform trouble shooting relevant to DTC indicated.

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