Inspection 4: Pressure Sensor And Circuit Between Pressure Sensor And VDC/TCS/Abs Control Unit

Check self-diagnosis results.

Fig 1: Displaying Self-Diagnosis Results

Courtesy of NISSAN MOTOR CO., U.S.A.

Does "PRESSURE SENSOR" appear on self-diagnosis display?

1. YES: GO TO  2.
2. NO: Inspection is completed.

Fig 2: Displaying Pressure Sensor-To-VDC/TCS/ABS Control Unit Circuit

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Disconnect pressure sensor VDC actuator connector E21 and VDC/TCS/ABS control unit connectors E218. Then reconnect them securely.
2. Perform VDC/TCS/ABS control unit self-diagnosis again.

OK or NG

1. OK: Poor connection of connectors. Repair or replace suspect connector. Perform self-diagnosis again.
2. NG: GO TO  3.

1. Disconnect VDC actuator connector E21 pressure sensor and VDC/TCS/ABS control unit connector E218.
Fig 3: Checking Pressure Sensor Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check continuity between VDC/TCS/ABS control unit harness connector E218 and VDC actuator pressure sensor harness connector E21.
Fig 4: Displaying VDC/TCS/ABS & Pressure Sensor Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

1. OK: GO TO  4.
2. NG: Open or short in harness. Repair or replace the suspect harness.

Check pressure sensor value on "DATA MONITOR".

Fig 5: Displaying Data Monitor Values Based On Brake Pedal Condition

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

1. OK: Perform VDC/TCS/ABS control unit self-diagnosis again.
2. NG: Pressure sensor malfunction. Replace VDC actuator (inside pressure sensor).