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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 P1572: Brake Pedal Position Switch >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different variant/trim than selected.
NOTE: This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed. 1st trip DTC is erased when ignition switch is turned OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P1572

ASCD BRAKE SW

(ASCD brake switch)

A

Diagnosis condition

--

Signal (terminal)

  • Brake pedal position switch signal
  • Stop lamp switch signal

Threshold

When the vehicle speed is above 30 km/h (19 MPH), ON signals from the stop lamp switch and the brake pedal position switch are sent to the ECM at the same time

Diagnosis delay time

--

B

Diagnosis condition

--

Signal (terminal)

Brake pedal position switch signal

Threshold

Brake pedal position switch signal is not sent to ECM for extremely long time while the vehicle is being driven

Diagnosis delay time

Extremely long time