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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 316 (Engine Control System (DTC/Circuit Diagnosis) (4.0L) (4 Of 4)) >> DTC/Circuit Diagnosis >> DTC P1564: ASCD Steering Switch >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to DTC Logic .

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1564

ASCD SW

(ASCD steering switch)
  • An excessively high voltage signal from the ASCD steering switch is sent to ECM.
  • ECM detects that input signal from the ASCD steering switch is out of the specified range.
  • ECM detects that the ASCD steering switch is stuck ON.
  • Harness or connectors

    (The switch circuit is open or shorted.)

  • ASCD steering switch
  • ECM
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