Removing
1. Remove the ground wire from the battery.
2. Loosen the screws and remove the cover from the hydraulic unit.
3. Attach a clean, transparent hose to the hydraulic bleeder port (SP label) and install the other end of the hose into the vessel. Unscrew the bleeder screw and drain the brake fluid into a vessel.
4. Release the mounting bracket and disconnect the electrical connector from the hydraulic device.
5. Disconnect the brake pipes from the hydraulic device.
6. Unscrew the nut and remove the ground bar from the hydraulic block.
7. Unscrew the bolts and remove the hydraulic device.
Attention! Do not disassemble the hydraulic device modulator, as it is not intended to be repaired.
Installation
1. Installation is carried out in the reverse order of removal, taking into account the following points:
- a - check the condition of the rubber bushings and, if necessary, replace them;
- b - in accordance with the previously made marking, connect the brake pipes to the hydraulic device and secure with nuts, tightening them to the required torque;
- c - bleed the brake system.
ASR pump
Removing
1. Remove the ground wire from the battery.
2. Loosen the screws and remove the cover from the hydraulic unit.
3. Attach a clean, transparent hose to the hydraulic bleeder port (SP label) and install the other end of the hose into the vessel. Unscrew the bleeder screw and drain the brake fluid into a container.
4. To reduce the loss of brake fluid, pinch the hose connecting the pump to the reservoir of the master brake cylinder.
5. Wipe the area around the pump hose connection and tubing connections. Unscrew the union nuts and, being careful, remove the tubes from the pump. Also disconnect the hose from the pump. Close the ends of the tubes and hose with plugs.
6. Disconnect the electrical connector from the pump, then remove the pump from the bracket and remove it from the engine compartment.
Installation
1. Installation is carried out in the reverse order of removal, taking into account the following points:
- a - check the condition of the rubber seal of the pump and, if necessary, replace it;
- b - bleed the air from the brake system, as well as from the hydraulic device.
Pressure accumulator
Removing
1. Remove the ground wire from the battery.
2. Loosen the screws and remove the cover from the hydraulic unit.
3. Attach a clean, transparent hose to the hydraulic bleeder port (SP label) and install the other end of the hose into the vessel. Unscrew the bleeder screw and drain the brake fluid into a vessel.
4. Disconnect the pressure accumulator tubes from the base of the hydraulic unit.
5. Apply the parking brake, then raise the front of the vehicle and support it on stands. Remove the left front wheel.
6. Unscrew the screws and remove the wing protection from under the arch of the left wing.
7. Unscrew the nuts securing the pressure accumulator to the bracket, then, being careful, remove the pressure accumulator together with the tubes.
Installation
1. Installation is carried out in the reverse order of removal, taking into account the following points:
- a - when installing, check the correct connection of the pipes to the hydraulic device;
- b - tighten the connecting nuts for fastening the tubes to the required torque;
- c - bleed the brake system and hydraulic device.
Electronic control device (ECU)
Removing
1. The ABS electronic control is located under a plastic cover and mounted on the back of the battery tray. Remove the ground wire from the battery.
2. Remove the rubber seal and cover. To improve access to the electronic control device, remove the rubber seal located at the base of the windshield, then disconnect the mounting bracket, unscrew the screws and remove the side of the ventilation shroud.
3. Release the mounting brackets and disconnect the electrical connectors from the ECUs, then remove the ECU from its socket. The hydraulic ECU is installed behind the throttle position actuator ECU.
Installation
1. Installation is made in sequence, return to removal.
Front wheel sensor
Removing
1. Apply the parking brake, then raise the front of the vehicle and support it on stands. Remove the corresponding front wheel.
2. Check that the ignition is off, then remove the electrical connector from the mounting bracket and disconnect it from the main wiring harness. Remove the sensor wiring from the mounting brackets and clamps.
3. Unscrew the bolt securing the sensor to the steering knuckle and remove the sensor along with the wires. Check the condition of the sensor O-ring and replace it if necessary. When installing the sensor, you must use a new mounting bolt.
Installation
1. Clean the wheel sensor and the grooves of the wheel sensor rotor from dirt. Apply a thin layer of grease to the mating surfaces of the sensor and steering knuckle.
2. Install the sensor o-ring.
3. Install the wheel sensor in the steering knuckle and secure with new bolts, tightening them to the required torque.
4. Secure the sensor wire with brackets and clamps. Check that the O-ring of the electrical connector is in good condition, then connect the electrical connector and secure it with the clip.
5. Install the wheel, then lower the vehicle to the ground and tighten the wheel bolts to the correct torque.
Rear wheel sensor
Attention! When installing the rear wheel sensor, it is necessary to use a new sensor mounting bolt and a new rear final drive mechanism nut, as well as a new sensor O-ring.
Removing
1. Raise the rear of the car and secure it on stands.
2. Unscrew the nuts and remove the casing that secures the sensor wiring to the bottom of the car.
3. Place a wooden block jack under the rear final drive housing and raise the jack just enough so that the weight of the rear final drive is supported by the jack.
4. Unscrew the two nuts and remove the two bolts securing the rear of the final drive.
5. Unscrew the nut and remove the bolt securing the front of the final drive.
6. Being careful, lower the rear final drive just enough so that the driveshaft just touches the cross support beam. Mark the location and remove the washers and rubber pads from the rear final drive front mount. Check the condition of the rubber pads and replace if necessary.
7. Unscrew the bolt and remove the sensor together with the O-ring from the rear final drive housing. Replace sensor o-ring.
8. Locate the sensor electrical connector and remove the electrical connector cover. Turn a lock ring and disconnect an electric socket.
9. If it is necessary to remove both sensors at the same time, mark the wires and electrical connectors of the sensors.
Installation
1. Connect the electrical connectors of the sensor according to the previously made marking and install the cover.
2. Clean the mating surfaces of the sensor and rear final drive housing and install new sensor O-rings.
3. Install the sensors on the rear final drive housing and secure with bolts, tightening them to the required torque.
4. Check that the rubber pads and washers are properly installed on the front of the rear final drive and reset the rear final drive to its original position.
5. Secure the rear final drive with bolts by screwing new nuts onto them and tightening them to the required torque.
6. Check that the sensor wiring is correctly positioned, then place a cover over the wiring and lower the vehicle.
Front wheel sensor gear rotor
The front wheel sensor gear rotor is mounted on the rear of the wheel hub. Clean the grooves and check the condition of the rotor teeth. If a rotor replacement is required, the hub assembly must be replaced.
Rear wheel sensor gear rotors
The rear wheel sensor toothed rotors are an integral part of the rear final drive. Remove the rear wheel sensors and check the condition of the rotor teeth through the sensor holes. To replace the rear wheel sensor gear rotor, the rear final drive must be dismantled and this work must be done at a service station.
Protection relay
Removing
1. The protection relay is located next to the electronic control device (ECU). Before removing the relay, check that the ignition is off.
2. Unscrew the mounting screw, pull the relay out of its socket and remove it from the engine compartment.
Installation
1. Check the condition of the protective relay connectors on the relay and in the relay socket.
2. Installation is made in sequence, return to removal.
ASR relay
Removing
1. Loosen the screw and remove the relay cover from the hydraulic unit.
2. Check that the ignition is off and remove the required relay from the control unit. The solenoid valve relay is smaller than the return pump relay.