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Home >> Infiniti >> 2008 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1148 To P2A03 >> DTC P1805: Brake Switch >> Component Inspection >> Stop Lamp Switch
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Stop Lamp Switch

  1. Disconnect stop lamp switch harness connector.
    Fig 1: Checking ASCD Brake Switch Power Supply Circuit
    G05739661Courtesy 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 1 And 2
    G05739662Courtesy of NISSAN MOTOR CO., U.S.A.
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