LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (EV Control System) >> DTC/Circuit Diagnosis >> DTC P1572: ASCD Brake Switch >> DTC Logic >> DTC Confirmation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM DTC CONFIRMATION PROCEDURE-I
    NOTE: The procedure for malfunction B is not described. It takes an extremely long time to complete the procedure for malfunction B. By performing the procedure for malfunction A, the condition that causes malfunction B can be detected.
    1. Turn power switch ON (ESP switch OFF).
    2. Select "VEHICLE SPEED" and "GEAR POSITION" in "DATA MONITOR" mode.
    3. Press MAIN switch and check that CRUISE lamp illuminates.
    4. Drive the vehicle for at least 5 consecutive seconds under the following conditions.
      CAUTION: Always drive vehicle at a safe speed.
      VEHICLE SPEED REFERENCE CHART

      VEHICLE SPEED More than 30 km/h (19 MPH)
      GEAR POSITION D or R
    5. Check self-diagnostic result.

    Is DTC detected? 

    YES: Proceed to "DIAGNOSIS PROCEDURE ".

    NO: Go to 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE-II
    1. Drive the vehicle for at least 5 consecutive seconds under the following conditions.
      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 vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.
      VHCL SPEED SE REFERENCE CHART

      VHCL SPEED SE More than 30 km/h (19 MPH)
      GEAR POSITION D or R
      Driving location Depress the brake pedal for more than 5 seconds so as not to come off from the above-mentioned vehicle speed.
    2. Check self-diagnostic result.

    Is DTC detected? 

    YES: Proceed to "DIAGNOSIS PROCEDURE ".

    NO: INSPECTION END