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Home >> Infiniti >> 2003 >> I35 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1572: ASCD Brake Switch >> DTC Confirmation Test
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DTC Confirmation Test

  1. Start engine. Ensure TCS is turned off. Select DATA MONITOR mode with scan tool. Drive vehicle at more than 19 MPH for 5 consecutive seconds.
    NOTE: Vehicle may be driven on road or in shop with drive wheels lifted.
  2. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE  . If 1st trip DTC is not detected, go to next step.
  3. While driving vehicle at more than 19 MPH, depress brake pedal for more than 5 seconds, without allowing vehicle speed to drop to 19 MPH.
  4. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE  . If 1st trip DTC is not detected, system is okay at this time.