1986 TOYOTA CAMRY V20 sensor

(d) Jack up the front side of the vehicle slowly as shown.
HINT: When measuring the height, measure at the center
of the lower body or spoiler edge of the vehicle.
(e) Check that the warning light does not turn on.
(f) Jack down the vehicle and check that the warning
light blinking.
If the warning light turns on, inspect the deceleration se
sor installation. And if the sensor installation is ±OK, r
place the deceleration sensor.
(e) Drive the vehicle straight ahead at about 20 km/h
(12.4 mph) or more, depress the brake pedal strong±
ly.
(f) Check that the warning light light pattern changes af-
ter braking as shown.
If the operation is not as specified, inspect the deceleration
sensor installation. And if the sensor installation is OK, r
place the deceleration sensor. 5. INSPECT SENSOR OPERATION
(a) Drive the vehicle straight ahead at about 10 km/h l6.2
mph) or more, lightly depress the brake pedal.
(b) Check that there is no change in the warning light
light pattern.
(c) Drive the vehicle straight ahead at about 20 km/h
(12.4 mph) or more, depress the brake pedal a little
strong.
(d) Check that the warning light turns on while braking.
6. REMOVE SHORT PIN
(a) Stop the engine.
(b) Remove the short pin or wire from the Ts connector.
(c) Install the rubber cap to the Ts connector.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±83

INSPECTION OF FRONT SPEED
SENSOR
1. INSPECT SPEED SENSOR
(a) Remove the bolt from the pipe clamp of the wire har±
ness.
(b) Disconnect the speed sensor connector.
(e) Measure the resistance between terminals.
Resistance: 0.85 ± 1.30 K W
If resistance value is not as specified, replace the sensor.
(d) Check that there is no continuity between each termi-
nal and sensor body.
If there is continuity, replace the sensor.
(e) Connect the speed sensor connector.
(f) Install the bolt of the pipe clamp.
2. INSPECT SENSOR INSTALLATION
Check that the sensor installation bolt is tightened prop-
erly. If not, tighten the bolt.
Torque: 80 kg±cm (69 in.±Ib, 7.8 N±m)
Front Speed Sensor
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±94

INSPECTION OF FRONT SPEED SENSOR AND
SENSOR ROTOR SERRATIONS (REFERENCE)
INSPECT FRONT SPEED SENSOR AND SENSOR ROTOR
SERRATIONS BY USING AN OSCILLOSCOPE
(a) Connect an oscilloscope to the speed sensor connec-
tor.
(b) Run the vehicle at 20 km/h (12.4 mph), and inspect
speed sensor output wave.
(c) Check that C is 0.5 V or more.
If not as specified, replace the speed sensor.
(d) Check that B is 70% or more of A.
It not as specified, replace the sensor rotor. 3. VISUALLY INSPECT SENSOR ROTOR SERRATIONS
(a) Remove the two bolts and remove the torque plate
with brake cylinder.
(b) Remove the rotor disc.
(c) Inspect the sensor rotor serrations for scratches,
cracks, warping or missing teeth.
(d) Install the rotor disc and brake cylinder assembly
with two bolts.
Torque:
2WD 960 kg±cm (69 ft±ib, 94 N±m)
4WD 1,090 kg±cm (79 ft±Ib, 107 N±m)
NOTICE: To prevent damage to the serrations, do not strike
the axle hub.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±95

INSPECTION OF REAR SPEED
SENSOR
1. INSPECT SPEED SENSOR
(a) Remove the seat cushion.
(b) Disconnect the speed sensor connector.
(e) Measure the resistance between terminals.
Resistance: 0.85 ± 1.50 k


If resistance value is not as specified, replace the sensor.
(d) Check that there is no continuity between each ter-
minal and sensor body.
If there is continuity, replace the sensor.
(e) Connect the speed sensor connector.
(f) Install the seat cushion.
Rear Speed Sensor (2WD)
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±96

INSPECTION OF REAR SPEED SENSOR AND SENSOR
ROTOR SERRATIONS (REFERANCE)
INSPECT REAR SPEED SENSOR AND SENSOR
ROTOR SERRATIONS BY USING AN OSCILLOSCOPE
(a) Connect an oscilloscope to the speed sensor connec-
tor.
(b) Run the vehicle at 20 km/h (12.4 mph), and inspect
speed sensor output wave.
(c) Check that C is 0.5 V or more.
If not as specified, replace the speed sensor.
(d) Check that B is 70% or more of A.
If not as specified, replace the rear axle hub. 3. VISUALLY INSPECT SENSOR ROTOR SERRATIONS
(a) Remove the two bolts and remove the torque plate
with brake cylinder.
(b) Remove the rotor disc.
(c) Inspect the sensor rotor serrations for scratches,
cracks, warping or missing teeth.
(d) Install the rotor disc and brake cylinder assembly with
two bolts.
Torque: 475 kg±cm 134 ft±lb, 47 N±m)
NOTICE: To prevent damage to the serrations, do not strike
the axle hub.
2. INSPECT SENSOR INSTALLATION
Check that the sensor installation bolt is tightened prop-
erly. If not, tighten the bolt.
Torque: 80 kg±cm (69 in.±lb, 7.8 N±m)
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±97

REMOVAL OF REAR SPEED SENSOR
1. DISCONNECT SPEED SENSOR CONNECTOR
(a) Remove the seat cushion.
(b) Disconnect the sensor connector, and pull out the
sensor wire harness.
(e) Remove the two clamp bolts holding the sensor wire
harness to the body and suspension arm.
2. REMOVE REAR BRAKE ASSEMBLY
(a) Remove the axle carrier mounting bolt and nut of up-
per side.
(b) Remove the two bolts and remove the disc brake as-
sembly.
(c) Suspend the disc brake so the hose is not stretched.
3. REMOVE ROTOR DISC
4. REMOVE REAR AXLE HUB
(a) Remove the four axle hub mounting bolts.
(b) Remove the rear axle hub.
(c) Remove the backing plate with parking brake as-
sembly and O±ring.
5. REMOVE SPEED SENSOR
Remove the bolts and remove the speed sensor from the
backing plate.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±98

4. INSTALL REAR BRAKE ASSEMBLY
(a) Install the disc brake assembly and torque the two
mounting bolts.
Torque: 475 kg±cm (34 ft±Ib, 47 N±m)
(b) Install the axle carrier mounting bolt and nut of upper
side.
Torque:. 2,100 kg±cm (152 ft±lb, 206 N±m)
2. INSTALL REAR AXLE HUB
(a) Install the backing plate with parking brake assem-
bly in place.
(b) Install a new O±ring to the axle carrier.
(c) Install the rear axle hub with the four bolts.
Torque: 820 kg±cm (59 ft±Ib, 80 N±m)
5. CONNECT SPEED SENSOR CONNECTOR
(a) Install the wire harness with clamps and bolts in
place.
(b) Insert the wire harness connector to inside of the ve-
hicle, and connect the connector.
(c) Install the seat cushion.
INSTALLATION OF REAR SPEED
SENSOR
1. INSTALL SPEED SENSOR
Install the speed sensor to the backing plate with a bolt.
Torque: 80 kg±cm (69 in.±Ib, 7.8 N±m)
3. INSTALL ROTOR DISC
Align the hole on the axle hub and service hole on the
disc, and install the rotor disc.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±99

INSPECTION OF REAR SPEED
SENSOR
1. INSPECT SPEED SENSOR
(a) Remove the rear seat cushion.
(b) Disconnect the speed sensor connector.
(c) Measure the resistance between terminals.
Resistance: 0.85 ± 1.50 k


If resistance value is not as specified, replace the sensor.
2. INSPECT SENSOR INSTALLATION
(a) Check that the sensor installation bolt is tightened
properly. If not, tighten the bolt.
Torque: 195 kg±cm (14 ft±Ib, 19 N±m)
(b) Check that there is no clearance between the sen-
sor and rear axle carrier as shown.
If there is clearance, replace the sensor. (d) Check that there is no continuity between each ter-
minal and sensor body.
If there is continuity, replace the sensor:
(e) Connect the speed sensor connector.
(f) Install the rear seat cushion.
Rear Speed Sensor (4WD)
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±100