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Home >> Infiniti >> 2006 >> Q45 >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System >> VDC/TCS/Abs >> Trouble Diagnosis For System >> Brake Fluid Level Switch >> Inspection Procedure
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Inspection Procedure

  1. CHECK SELF-DIAGNOSIS RESULTS 

    With CONSULT-II 

    1. Turn ignition switch "ON". (Do not start engine.)
    2. Select "SELF-DIAG RESULTS" mode for "VDC" with CONSULT-II.
    3. Touch "ERASE".
    4. Turn ignition switch "OFF" and wait at least 10 seconds.
    5. Check the self-diagnostic results.
      SELF-DIAGNOSTIC RESULTS

      Self-diagnosis results
      BR FLUID LEVEL LOW

    Is above displayed in the self-diagnosis display? 

    1. YES : GO TO 2.
    2. NO : INSPECTION END
  2. CHECK CONNECTOR 
    1. Turn ignition switch "OFF".
    2. Disconnect brake fluid level switch connector E74 and VDC/TCS/ABS control unit connector E218.
    3. Reconnect connectors securely, then perform VDC/TCS/ABS control unit self-diagnosis again.

    Does anything appear on self-diagnosis results display? 

    1. YES : Poor connector connections. Repair or replace connectors.
    2. NO : GO TO 3.
  3. CHECK HARNESS BETWEEN BRAKE FLUID LEVEL SWITCH AND COMBINATION METER 
    1. Turn ignition switch "OFF".
    2. Disconnect combination meter connector M43.
    3. Check continuity between brake fluid level switch harness connector E74 and combination meter harness connector M43.
      Fig 1: Checking Continuity Between Brake Fluid Level Switch And Combination Meter
      G04128980Courtesy of NISSAN MOTOR CO., U.S.A.

      51 - 1 : Continuity should exist. 

      2 - Ground : Continuity should exist. 

      51 - Ground : Continuity should not exist. 

    OK or NG 

    1. OK : Brake fluid level switch is malfunctioning. Replace reservoir tank assembly Refer to "DISASSEMBLY AND ASSEMBLY ".
    2. NG : If open or short in harness, repair or replace the harness.