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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (5.6L) (5 Of 6)) >> DTC/Circuit Diagnosis >> DTC P1574: ASCD Vehicle Speed Sensor >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different variant/trim than selected.

The ECM receives two vehicle speed signals by the CAN communication line. One is sent from "combination meter", and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD control. Refer to System Description for ASCD functions.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P1574

ASCD VHL SPD SEN

(ASCD vehicle speed sensor)

Diagnosis condition

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Signal (terminal)

ASCD steering switch signal

Threshold

ECM detects a difference between two vehicle speed signals is out of the specified range

Diagnosis delay time

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