Vehicle Dynamics Control System (Except Wrx): Removal & Installation Subaru XV GP

INSTALLATION

1. Install each part in the reverse order of removal. Tightening torque: Refer to "COMPONENT" of "General Description". < Refer to «VDC CONTROL MODULE & HYDRAULIC CONTROL UNIT (VDCCM&H/U)»(ref-560389-S18672574702013061300000) , COMPONENT, General Description. >
2. Bleed air from the brake system. < Refer to «AIR BLEEDING»(ref-560364-S34332808572013061300000) . >
3. Perform parameter confirmation, selection, and registration. NOTE: When the VDCCM&H/U is replaced with a new part, be sure to perform the selection registration operation. Be sure to use the Subaru Select Monitor for the selection and registration of parameter. When the registration has not been performed, the DTC code "Parameter selection error" is detected together with the ABS/EBD/VDC warning light illumination. Check that the applied model and grade of the relevant vehicle are included. < Refer to «PARAMETER CHECK»(ref-560382-S07352888612013061300000) , OPERATION, Subaru Select Monitor. > On {Confirm on parameter} display, enter the applied model of the relevant vehicle and check if it is correct. If the information is not correct, perform parameter selection and registration. < Refer to «PARAMETER SELECTION»(ref-560382-S21820547042013061300000) , OPERATION, Subaru Select Monitor. >
4. Perform mode setting for each sensor. VDC sensor midpoint setting mode: < Refer to «VDC SENSOR MIDPOINT SETTING MODE»(ref-560389-S40582429032013061300000) , ADJUSTMENT, VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). >

Scheme 58

1. Check the identification (a) of the VDC control module & hydraulic control unit (VDCCM&H/U). NOTE: For the identification, refer to "SPECIFICATION" in "General Description". < Refer to «SPECIFICATION»(ref-560389-S28369378172013061300000) , General Description. >
2. Check the condition of connection and settlement of connector, and correct or replace if defective.

Scheme 59

1. Lift up the vehicle, and then remove the wheel.
2. Remove the bleeder - screws from the FL and FR caliper bodies.
3. Connect two pressure gauges to FL and FR caliper bodies. CAUTION: Use a pressure gauge used exclusively for brake fluid measurement. Do not use the pressure gauge used for the measurement of transmission oil. Doing so will cause the piston seal to expand and deform. NOTE: Wrap sealing tape around the pressure gauge.
4. Bleed air from the pressure gauges and the FL and FR caliper bodies.
5. Perform ABS sequence control. < Refer to «ABS SEQUENCE CONTROL»(ref-560389-S08255054002013061300000) . > NOTE: When the hydraulic unit begins to work, first the FL side performs decompression, hold and compression, and then the FR side performs decompression, hold and compression.
6. Read values indicated on the pressure gauge and check if the fluctuation of the values between decompression and compression meets the standard values. Depress the brake pedal and check that the kick-back is normal, and tightness is normal. Inspection conditions Front wheel Rear wheel Initial value 3, 500 kPa (36 kgf/cm 2 , 511 psi) 3, 500 kPa (36 kgf/cm 2 , 511 psi) When depressurized 500 kPa (5 kgf/cm 2 , 73 psi) or less 500 kPa (5 kgf/cm 2 , 73 psi) or less When pressurized 3, 500 kPa (36 kgf/cm 2 , 511 psi) or more 3, 500 kPa (36 kgf/cm 2 , 511 psi) or more
7. Disconnect the pressure gauges from FL and FR caliper bodies.
8. Install the bleeder - screws of FL and FR caliper bodies.
9. Remove the bleeder - screws from RL and RR caliper bodies.
10. Connect two pressure gauges to RL and RR caliper bodies.
11. Bleed air from RL and RR caliper bodies, and pressure gauge.
12. Perform ABS sequence control. < Refer to «ABS SEQUENCE CONTROL»(ref-560389-S08255054002013061300000) . > NOTE: When the hydraulic unit begins to work, first the RR side performs decompression, hold and compression, and then the RL side performs decompression, hold and compression.
13. Read values indicated on the pressure gauge and check if the fluctuation of the values between decompression and compression meets specification. Depress the brake pedal and check that the kick-back is normal, and tightness is normal.
14. Disconnect the pressure gauge from the RL and RR caliper bodies.
15. Install the bleeder - screws of RL and RR caliper bodies.
16. Bleed air from the brake system. < Refer to «AIR BLEEDING»(ref-560364-S34332808572013061300000) . >

Scheme 60

1. Set wheels other than the one to measure on free rollers.
2. Prepare for the ABS sequence control operation. < Refer to «ABS SEQUENCE CONTROL»(ref-560389-S08255054002013061300000) . >
3. Set the front wheels or rear wheels on the brake tester (a) and set the gear to neutral.
4. Operate the brake tester.
5. Perform ABS sequence control. < Refer to «ABS SEQUENCE CONTROL»(ref-560389-S08255054002013061300000) . >
6. When the hydraulic unit begins to work, check the following work sequence. The FL wheel performs decompression, hold and compression in sequence, and subsequently the FR wheel repeats the cycle. The RR wheel performs decompression, hold and compression in sequence, and subsequently the RL wheel repeats the cycle.
7. Read values indicated on the brake tester and check if the fluctuation of the values between decompression and compression meets specification. Inspection conditions Front wheel Rear wheel Initial value 1, 000 N (102 kgf, 225 lb) 1, 000 N (102 kgf, 225 lb) When depressurized 500 N (51 kgf, 112 lb) or less 500 N (51 kgf, 112 lb) or less When pressurized 1, 000 N (102 kgf, 225 lb) or more 1, 000 N (102 kgf, 225 lb) or more
8. After the inspection, depress the brake pedal and check that it is not abnormally hard, and tightness is normal.

REPLACEMENT

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1. Remove the VDCCM&H/U. < Refer to «REMOVAL»(ref-560389-S33883435522013061300000) , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). >
2. To prevent entry of foreign objects and brake fluid leakage, plug the oil pressure port of the VDCCM&H/U using a screw plug, etc.
3. Set the pump motor section of the removed VDCCM&H/U face down on a vise. NOTE: Before securing a part on a vise, place cushioning material such as wood blocks, aluminum plate, or cloth between the part and the vise.
4. Using TORX® bit E5, remove the four screws of VDCCM. CAUTION: Do not re-use the screws.
5. Slowly pull out the VDCCM upward from the H/U. NOTE: To prevent damaging of coil section, remove the VDCCM straight up from H/U without twisting.
6. Make sure there is no dirt or damage on the sealing surface of the H/U. CAUTION: Do not clean the VDCCM&H/U by applying compressed air. Even if damage is found on the H/U seal, do not attempt repair by filing or with a metal scraper. To remove the seal residue, always use a plastic scraper. Do not use chemical such as paint thinner, etc. to clean.
7. Position the coil of the new VDCCM to align with the H/U valve.
8. To prevent deformation of the VDCCM housing cover, hold the corner of VDCCM and install it to the H/U without tilting.
9. Using a TORX® bit E5, attach/tighten new screws in the order of (1) through (4). CAUTION: Always use new screws. Tightening torque: 1.5 N.m (0.15 kgf-m, 1.1 ft-lb)
10. Check that there is no foreign matter in mating surface between the VDCCM&H/U.
11. Using a TORX® bit E5, tighten the screws in the order of (1) through (4) again. Tightening torque: 3 N.m (0.31 kgf-m, 2.2 ft-lb)
12. Check that there is no gap in the mating surface between VDCCM&H/U.
13. Install the VDCCM&H/U to the vehicle. CAUTION: When installing the VDCCM&H/U, replace the damper - hydraulic unit, spacer and nut with new parts.
14. Bleed air from the brake system. < Refer to «PROCEDURE»(ref-560364-S30458313742013061300000) , Air Bleeding. >
15. Perform the selection and registration operation of parameter. < Refer to «PARAMETER SELECTION»(ref-560382-S21820547042013061300000) , OPERATION, Subaru Select Monitor. > NOTE: After replacing the VDCCM, be sure to perform the selection registration operation of parameter. For the selection and registration of parameter, the Subaru Select Monitor is required. When the registration has not been performed, the DTC code "Parameter selection error" is detected together with the ABS/EBD/VDC warning light illumination.
16. Check the parameter to confirm that the applied models and grades of the relevant vehicle are included. < Refer to «PARAMETER CHECK»(ref-560382-S07352888612013061300000) , OPERATION, Subaru Select Monitor. >
17. If the applied models and grades of the relevant vehicle are not included, perform the selection registration operation of parameter with the {Confirm on parameter} screen again. < Refer to «PARAMETER SELECTION»(ref-560382-S21820547042013061300000) , OPERATION, Subaru Select Monitor. >
18. Execute Clear Memory after parameter selection and registration operations because the DTC for "Parameter selection error" is memorized.

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Scheme 70

1. Position the front wheels straight ahead. (After moving a vehicle 5 m (16 ft) or more with front wheels positioned straight ahead, make sure that the vehicle moves straight ahead.)
2. Turn the ignition switch to OFF.
3. Disconnect the ground cable from battery and wait for at least 60 seconds before starting work.
4. Remove the driver's airbag module. CAUTION: Before servicing the airbag module, always refer to "CAUTION" of "General Description" in the "AIRBAG SYSTEM" service information. < Refer to «CAUTION»(ref-560375-S15420108262013061300000) , General Description. > Using a hexagon wrench wrapped with protective tape, push in the snap pins to disengage the locks (3 places). Disconnect the horn harness and airbag connector, and remove the airbag module. < Refer to «DRIVER'S AIRBAG MODULE»(ref-560375-S42651612422013061300000) , CURTAIN AIRBAG MODULE & PRETENSIONER, PROCEDURE, Airbag Connector. >
5. Remove the steering wheel. CAUTION: Always use the steering wheel puller for removal to avoid deforming the steering wheel. If the steering wheel has been removed, make sure that the steering roll connector is not turned from the original position. PREPARATION TOOL: Steering wheel puller Disconnect the connector and remove the nut. Put alignment marks and remove the steering wheel.
6. Remove the cover assembly - column. Release the screw and claw, and remove the cover assembly - column UPR and the cover assembly - column LWR.
7. Remove the steering roll connector. CAUTION: Make sure that the steering roll connector is not turned from the original position. Disconnect the connector under the steering roll connector. Release the claws and remove the steering roll connector.
8. Remove the steering angle sensor. Release the claws and remove the steering angle sensor (b) from the steering roll connector (a).
9. Install the steering angle sensor. Apply grease to the protrusion (a) of new steering angle sensor. CAUTION: Do not rotate the steering angle sensor protrusion. Align the center of steering roll connector. < Refer to «INSTALLATION»(ref-560375-S34782571832013061300000) , Roll Connector. > Align the position of the protrusion and install the steering angle sensor to the steering roll connector.
10. Install each part in the reverse order of removal. Tightening torque: Steering wheel: 39 N.m (3.98 kgf-m, 28.8 ft-lb) Clearance: Cover assembly - column to steering wheel: 4 - 6 mm (0.16 - 0.24 in)
11. After installation, perform the neutral position setting of the steering angle sensor. < Refer to «VDC SENSOR MIDPOINT SETTING MODE»(ref-560389-S40582429032013061300000) , ADJUSTMENT, VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). >

Scheme 71

Scheme 72

1. Disconnect the ground cable from battery.
2. Lift up the vehicle, and then remove the front wheels.
3. Remove the front ABS wheel speed sensor. CAUTION: Be careful not to damage the sensor. Do not apply excessive force to the sensor harness. Leave the sensor harness clamp on the vehicle side. Disconnect the connector of the front ABS wheel speed sensor in the engine compartment. Remove each harness clip and grommet. Remove the bolts, and remove the front ABS wheel speed sensor from the housing assembly - front axle.

Install each part in the reverse order of removal.

Note. Check the identification (mark) on the harness to make sure there is no warpage. < Refer to SPECIFICATION , General Description. > Check if the harness is not pulled and does not come in contact with the suspension or body while operating the steering.

Tightening torque

Front ABS wheel speed sensor: 7.5 N.m (0.76 kgf-m, 5.5 ft-lb)

Front ABS wheel speed sensor bracket: 33 N.m (3.36 kgf-m, 24.3 ft-lb)

Front wheel: 120 N.m (12.24 kgf-m, 88.5 ft-lb)

1. Install each part in the reverse order of removal.
2. Route the rear ABS wheel speed sensor cable to the upper arm assembly. NOTE: Check the identification (mark) on the harness to make sure there is no warpage. < Refer to «SPECIFICATION»(ref-560389-S28369378172013061300000) , General Description. > Tightening torque: Rear ABS wheel speed sensor: 7.5 N.m (0.76 kgf-m, 5.5 ft-lb) Rear wheel: 120 N.m (12.24 kgf-m, 88.5 ft-lb)

REMOVAL

Refer to "Front Hub Unit Bearing" for removal, because the front magnetic encoder is integrated with the hub unit COMPL - front axle. < Refer to REMOVAL , Front Hub Unit Bearing. >

Refer to "Front Hub Unit Bearing" for installation, because the front magnetic encoder is integrated with the hub unit COMPL - front axle. < Refer to INSTALLATION , Front Hub Unit Bearing. >

Refer to "Rear Hub Unit Bearing" for removal, because the rear magnetic encoder is integrated with the hub unit COMPL - rear axle. < Refer to REMOVAL , Rear Hub Unit Bearing. >

Refer to "Rear Hub Unit Bearing" for installation, because the rear magnetic encoder is integrated with the hub unit COMPL - rear axle. < Refer to INSTALLATION , Rear Hub Unit Bearing. >

Install each part in the reverse order of removal.

Scheme 73

1. Disconnect the VDC OFF switch connector.
2. Check the resistance between the VDC OFF switch terminals. PREPARATION TOOL: Circuit tester Terminal No. Inspection conditions Standard 2 - 3 Switch OFF 1 Mohms or more Switch ON Less than 1 ohms
3. Replace the VDC OFF switch if the inspection result is not within the standard value.