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Home >> Infiniti >> 2003 >> M45 >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Brake Control System >> Trouble Diagnosis >> Inspection 4 Pressure Sensor System >> Inspection Procedure
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Inspection Procedure

  1. SELF-DIAGNOSIS RESULT CHECK 
    Fig 1: Checking Self-Diagnosis Result - Pressure Sensor System
    G02022181Courtesy of NISSAN MOTOR CO., U.S.A.

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

    YES >> GO TO 2.

    NO >> Inspection End

  2. CONNECTOR INSPECTION 
    1. Disconnect VDC actuator (pressure sensor) connector E21 and VDC/TCS/ABS control unit connector, check the terminals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace the terminal.
    2. Reconnect the connectors and Re-conduct VDC/TCS/ABS control unit self- diagnosis.

    OK or NG 

    OK >> The connector terminal contact is loose, damaged, open or shorted.

    NG >> GO TO 3.

  3. PRESSURE SENSOR HARNESS INSPECTION 
    1. Turn off the ignition switch and disconnect VDC actuator (pressure sensor) connector E21 and VDC/TCS/ABS control unit connector.
    2. Check the continuity between VDC/TCS/ABS control unit harness connector E218 and VDC actuator (pressure sensor) harness connector E21.
    Fig 2: Checking Pressure Sensor Harness - Pressure Sensor System (1 Of 2)
    G02022182Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 3: Checking Pressure Sensor Harness - Pressure Sensor System (2 Of 2)
    G02022183Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK >> GO TO 4.

    NG >> If the open or short in harness, repair or replace the harness.

  4. PRESSURE SENSOR INSPECTION 
    1. Connect pressure sensor and VDC/TCS/ABS control unit connectors.
    2. Use "Data Monitor" to check the pressure sensor value.
    Fig 4: Checking Pressure Sensor - Pressure Sensor System
    G02022184Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK >> Inspection End

    NG >> If the pressure sensor is damaged or malfunctioning, replace the VDC actuator (pressure sensor is built in).