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Home >> Infiniti >> 2009 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1140 To P2A03 >> DTC P1805: Brake Switch >> Component Inspection >> Stop Lamp Switch

Stop Lamp Switch

  1. Disconnect stop lamp switch harness connector.
    Fig 1: Identifying ASCD Brake And Stop Lamp Switch
    G06315784Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Check continuity between stop lamp switch terminals 3 and 4 under the following conditions.
    CONTINUITY REFERENCE CHART

    Conditions Continuity
    Brake pedal: Fully released Should not exist.
    Brake pedal: Slightly depressed Should exist.
  3. If NG, adjust stop lamp switch installation, refer to "INSPECTION AND ADJUSTMENT ", and perform step  2 again.
    Fig 2: Checking Continuity Between Stop Lamp Switch Terminals 3 And 4
    G06315785Courtesy of NISSAN MOTOR CO., U.S.A.