Inspection Procedure

1. Check fluid level in brake fluid reservoir tank. If the level is low, add brake fluid.
2. Clear the stored self-diagnostic results and check self-diagnostic results.

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

Yes: GO TO  2.

No: INSPECTION END

1. Disconnect brake fluid level switch connector and ABS actuator and electric unit (control unit) connector and check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
2. Securely reconnect connectors and perform self-diagnosis again.

OK or NG 

OK: Connector terminal contact is loose, damaged, open or shorted.

NG: GO TO  3.

1. Turn ignition switch OFF and disconnect brake fluid level switch connector E52 and ABS actuator and electric unit (control unit) connector E56.
2. Check continuity between brake fluid level switch harness connector and ABS actuator and electric unit (control unit) harness connector.
Fig 1: Identifying Continuity Between Brake Fluid Level Switch And ABS Actuator And Electric Unit Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Connect connectors and perform an ABS actuator and electric unit (control unit) self-diagnosis.

NG: If open or short in harness, repair or replace applied harness.