Toyota
Nissan Versa
 Sedan Service Manual
Brakes » Brake control system (BRC)
Vehicle jerks during VDC/TCS/ABS control

Diagnosis Procedure

1.SYMPTOM CHECK

Check if the vehicle jerks during VDC/TCS/ABS control.

Is the inspection result normal?

YES >> Inspection End.

NO >> GO TO 2

2.CHECK SELF DIAGNOSTIC RESULT

Perform self diagnostic result of ABS actuator and electric unit (control unit). Refer to BRC "CONSULT Function (ABS)".

Are self diagnostic results indicated?

YES >> Check corresponding items, make repairs, and perform ABS actuator and electric unit (control unit) self diagnostic result again. Refer to BRC "CONSULT Function (ABS)".

NO >> GO TO 3

3.CHECK CONNECTOR

  1. Turn ignition switch OFF.
  2. Disconnect ABS actuator and electric unit (control unit) connector.
  3. Check terminals for deformation, disconnection, looseness, etc.
  4. Securely reconnect connector and perform ABS actuator and electric unit (control unit) self diagnostic result. Refer to BRC "CONSULT Function (ABS)".

Are self diagnostic results indicated?

YES >> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.

NO >> GO TO 4

4.CHECK ECM AND TCM SELF DIAGNOSTIC RESULT

  1. Perform ECM self diagnostic result. Refer to EC "CONSULT Function".
  2. Perform TCM self diagnostic result. Refer to TM "CONSULT Function".

Are self diagnostic results indicated?

YES >> Check the corresponding items.

  • ECM: Refer to EC "DTC Index".
  • TCM: Refer to TM "DTC Index".

NO >> Replace ABS actuator and electric unit (control unit). Refer to BRC"Removal and Installation".

NORMAL OPERATING CONDITION

Description

Symptom

Result

Slight vibrations are felt on the brake pedal and operation noises occur when VDC, TCS or ABS is activated. This is a normal condition due to the VDC, TCS or ABS activation.
Stopping distance is longer than that of vehicles without ABS when the vehicle drives on rough, gravel, or snow-covered (fresh, deep snow) roads.
The brake pedal moves and generates noises when TCS or VDC is activated due to rapid acceleration or sharp turn.
The brake pedal vibrates and motor operation noises occur from the engine room after the engine starts and just after the vehicle starts. This is normal, and it is caused by the ABS operation check.
Depending on the road conditions, the driver may experience a sluggish feel in the brake pedal. This is normal, because TCS places the highest priority on the optimum traction (stability).
TCS may activate momentarily if wheel speed changes when driving where road friction coefficient varies, when downshifting, or when fully depressing accelerator pedal.
The ABS warning lamp and SLIP indicator lamp may turn ON when the vehicle is subject to strong shaking or large vibration, such as when the vehicle is rotating on a turntable or located on a ship while the engine is running. In this case, restart the engine on a normal road. If the normal condition is restored, there is no malfunction. At that time, erase the selfdiagnosis memory.
VDC may not operate normally or the ABS warning lamp, and SLIP indicator lamp may illuminate when driving on a road that is extremely slanted (e.g., bank in a circuit course).
A malfunction may occur in the yaw rate/side/decel G sensor system when the vehicle turns sharply, such as during a spin turn, axle turn, or drift driving, while the VDC function is OFF (VDC OFF indicator lamp illuminated).
The vehicle speed will not increase even though the accelerator pedal is depressed, when inspecting the speedometer on a 2-wheel chassis dynamometer. Normal (Deactivate the VDC/TCS function before performing an inspection on a chassis dynamometer.)
SLIP indicator lamp may simultaneously turn ON when low tire pressure warning lamp turns ON. This is not a VDC system error but results from characteristic change of tire.

REMOVAL AND INSTALLATION

    More about «Brake control system (BRC)»:

    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)

    Nissan Versa Sedan Service Manual / Brakes / Brake control system (BRC) / Vehicle jerks during VDC/TCS/ABS control

    Nissan Versa Sedan Service Manual

    Categories


    © 2017-2024 Copyright www.niveguide.com