Inspection 13 Brake Fluid Level Sensor System

INSPECTION PROCEDURE

1. SELF-DIAGNOSIS RESULT CHECK 
   1. Check the brake reservoir tank fluid level. If the level is low, add brake fluid.
   2. Erase the self-diagnosis results and check the self-diagnosis results.

      Self-diagnosis results

      Brake fluid level switch

   Is the above displayed in the self-diagnosis display items? 

   1. YES : GO TO 2.
   2. NO : Inspection End
2. CONNECTOR INSPECTION 
   1. Disconnect the brake fluid level sensor connector and VDC/TCS/ABS control unit connector and check the terminal for deformation, disconnection, looseness, and so on. If there is any non-standard condition, repair or replace the terminal.
   2. Securely reconnect the connectors and Re-conduct self-diagnosis.

   OK or NG 

   1. OK : The connector terminal contact is loose, damaged, open or shorted.
   2. NG : GO TO 3.
3. CHECK THE HARNESS BETWEEN THE BRAKE FLUID LEVEL SENSOR AND THE VDC/TCS/ABS CONTROL UNIT 
   1. Turn ignition switch OFF and disconnect the brake fluid level sensor connector, VDC/TCS/ABS control unit, connectors.
   2. Check the continuity between the brake fluid level sensor connector E44 and the VDC/TCS/ABS control unit connector E118.
      Fig 1: Checking Continuity Between Brake Fluid Level Sensor Connector E44 Terminal 1 & VDC/TCS/ABS Control Unit Connector E118 Terminal 40

      Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY REFERENCE DATA - BRAKE FLUID LEVEL SENSOR CONNECTOR E44 & VDC/TCS/ABS CONTROL UNIT CONNECTOR
      
      

      VDC/TCS/ABS control unit (Harness connector E118)	Brake fluid level switch (Harness connector E44)	Continuity
      40 (W)	1 (W)	Continuity should exist.
      40 (W)	Ground	Continuity should not exist.
      Ground	2 (B)	continuity should exist.

   OK or NG 

   1. OK : Connect the connectors and conduct a VDC/TCS/ABS control unit self-diagnosis.
   2. NG : If the open or short in harness, repair or replace the harness.