Nissan Versa

 Sedan Service Manual

Brakes » Brake control system (BRC)
VDC OFF Switch

Component Function Check

1.CHECK VDC OFF SWITCH OPERATION

Check that VDC OFF indicator lamp in combination meter turns ON/OFF when VDC OFF switch is operated.

Is the inspection result normal?

YES >> Inspection End.

NO >> Proceed to diagnosis procedure. Refer to BRC "Diagnosis Procedure".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to BRC "Wiring Diagram".

1.CONNECTOR INSPECTION

1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) and VDC OFF switch connectors.
3. Check connectors and terminals for deformation, disconnection, looseness or damage.

Is the inspection result normal?

YES >> GO TO 2

NO >> Repair or replace as necessary.

2.CHECK VDC OFF SWITCH

Check VDC OFF switch. Refer to BRC "Component Inspection".

Is the inspection result normal?

YES >> GO TO 3.

NO >> Replace VDC OFF switch. Refer to BRC "Removal and Installation".

3.CHECK VDC OFF SWITCH SIGNAL

With CONSULT.

1. Connect ABS actuator and electric unit (control unit) and VDC OFF switch connectors.
2. Turn ignition switch ON.
3. In "DATA MONITOR" select "OFF SW" and check VDC OFF switch signal.   

Is the inspection result normal?

YES >> Refer to BRC "Work Flow".

NO >> GO TO 4.

4.CHECK VDC OFF SWITCH CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) and VDC OFF switch connectors.
3. Check continuity between ABS actuator and electric unit (control unit) connector E33 terminal 15 and VDC OFF switch connector M34 terminal 1. 

    4.   Check continuity between ABS actuator and electric unit (control unit) connector terminal E33 terminal 15 and ground.               

Is the inspection result normal?

YES >> GO TO 5.

NO >> Repair or replace malfunctioning components.

5.CHECK VDC OFF SWITCH GROUND CIRCUIT

Check continuity between VDC OFF switch connector M34 terminal 2 and ground. 

Is the inspection result normal?

YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC "Removal and Installation".

NO >> Repair or replace malfunctioning components.

Component Inspection

1.CHECK VDC OFF SWITCH

1. Turn ignition switch OFF.
2. Disconnect VDC OFF switch connector.
3. Check continuity between terminals of VDC OFF switch connector.

Is the inspection result normal?

YES >> Inspection End.

NO >> Replace VDC OFF switch. Refer to BRC "Removal and Installation".

Precautions

Component parts

VDC/TCS/ABS

Diagnosis system [abs actuator and electric unit (control unit)]

ABS Actuator and electric unit (control unit)

Diagnosis and repair work flow

Adjustment of steering angle sensor neutral position

C1101, C1102, C1103, C1104 Wheel sensor

C1105, C1106, C1107, C1108 Wheel sensor

C1109 Power and ground system

C1110, C1153, C1170 ABS Actuator and electric unit (control unit)

C1111 Pump motor

C1115 ABS Sensor [abnormal signal]

C1116 Stop lamp switch

C1120, C1122, C1124, C1126 ABS In valve system

C1121, C1123, C1125, C1127 ABS Out valve system

C1130 Engine signal

C1140 Actuator relay system

C1142 Press sensor

C1143 Steering angle sensor

C1144 Incomplete steering angle sensor adjustment

C1145, C1146 Yaw rate/side/decel g sensor

C1155 BR Fluid level low

C1164, C1165, C1166, C1167 CV/SV System

U1000 CAN Comm circuit

U1002 System comm (CAN)

Parking brake switch

VDC OFF Switch

ABS Warning lamp

Brake warning lamp

VDC OFF Indicator lamp

Slip indicator lamp

VDC/TCS/ABS

Excessive ABS Function operation frequency

Unexpected pedal reaction

The braking distance is long

Pedal vibration or ABS operation sound occurs

Vehicle jerks during VDC/TCS/ABS control

Wheel sensor

Sensor rotor

ABS Actuator and electric unit (control unit)