TOYOTA CAMRY V20 1986 Service Information

(For 4WD)
(c) Remove the short pin or wire from the Ts connector
and install the rubber cap to it.
(d) Turn the ignition switch off. 8. PERFORM FOLLOWING STEPS
(a) (2WD)
Turn the ignition switch on.
(4WD)
Turn the ignition switch off.
(b) Connect the check connector.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±80

Low voltage of front right speed sensor signal
Abnormal change of front right speed sensor signal
Abnormal change of rear right speed sensor signalAbnormal change of front left speed sensor signal
Abnormal change of rear left speed sensor signal
All speed sensors and sensor rotors are normal
Low voltage of rear right speed sensor signalLow voltage of front left speed sensor signal
wRear right speed sensor
wSensor installationLow voltage of rear left speed sensor signalwRear left speed
sensor
wSensor installation wFront left speed sensor
wSensor installation wFront right speed sensor
wSensor installation
DIAGNOSTIC CODE
wFront right sensor
rotor
wRear right sensor
rotorwFront left sensor rotorwRear left sensor
rotor Malfunctioning Part Light Pattern Diagnosis
Code No.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±81

Deceleration Sensor Operation
Diagnosis System (For 4WD)
PRECAUTION
While checking the deceleration sensor diagnosis
system, A.B.S. does not work and brake system works as
normal brake system.
INSPECTION OF DIAGNOSIS SYSTEM
1. INSPECT BATTERY VOLTAGE
Inspect that the battery voltage is about 12 V.
2. CHECK THAT WARNING LIGHT TURNS ON
(a) Turn the ignition switch on.
(b) Check that the ºANTILOCKº warning light turns on for
3 seconds.
If not, inspect and repair or replace the fuse, bulb and wire
harness.
(e) Check that the ºANTILOCKº warning light turns off.
(d) Turn the ignition switch off.
3. PERFORM FOLLOWING STEPS
(a) Remove the rubber cap from the Ts connector lo-
cated in front of the actuator.
(b) Connect the terminals of Ts connector.
(c) Pull the parking brake lever up and depress the brake
pedal, and start the engine.
4. INSPECT SENSOR DETECTION POINT
(a) Jack up the rear side of the vehicle slowly as shown.
HINT: When measuring the height, measure at the center
of the rear bumper lower edge.
(b) Check that the warning light does not turn on.
(c) Jack down the vehicle and check that the warning
light blinking. (d) Check that the warning light blinks about 1 time every
1 second as shown.
If the warning light does not blink, inspect the parking brake
switch, stop light switch, Ts connector, deceleration sensor
installation and computer.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±82

(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 A.B.S. ACTUATOR
OPERATION
1. INSPECT BATTERY VOLTAGE
Battery voltage: 10 ± 14.5 V
A.B.S. Actuator
COMPONENTS
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±84

3. CONNECT ACTUATOR CHECKER (SST) TO
ACTUATOR
(a) Connect the actuator checker (SST) to the actuator
and body side wire harness through the sub±wire
harness (SST) as shown.
SST 09990±00150
(b) Connect the red cable of the checker to the battery
positive i
+y terminal and black to the negative (±¿ter-
minal. Connect the black cable of the sub±wire har-
ness to the battery negative (±) terminal or body
ground.
(c) Place the ºSHEET Aº (SST) on the actuator checker.
SST 09990±00163
4. INSPECT BRAKE ACTUATOR OPERATION
(a) Start the engine, and run it at idle.
(b) Turn the selector switch of the actuator checker to
ºFRONT RHº position.
(c) Push and hold in the MOTOR switch for a few sec-
onds.
(d) Depress the brake pedal and hold it until the step 1gf
is completed.
(e) Push the POWER SWITCH, and check that the
brake pedal does not go down.
NOTICE: Do not keep the POWER SWITCH pushing more
than 10 seconds.
(f) Release the switch, and check that the pedal goes
down. 2. DISCONNECT CONNECTORS FROM ACTUATOR
Disconnect the three connectors from the actuator as
shown.
(g) Push and hold in the MOTOR switch for a few sec-
onds, and check that the pedal returns.
(h) Release the brake pedal.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±85

5. INSPECT FOR OTHER WHEELS
(a) Turn the selector switch to ºFRONT LHº position.
(b) Repeating (c) to (j) of the step 4, check the actuator
operation similarly.
(c) Similarly, inspect ºREAR RHº and ºREAR LHº posi-
tion.
HINT: When inspecting ºREAR LHº position, push the
REAR LH switch instead of the POWER SWITCH, and you
can inspect in any the selector switch position.
7. DISCONNECT ACTUATOR CHECKER (SST) FROM
ACTUATOR
(a) Remove the ºSHEET Aº (SST) and disconnect the ac-
tuator checker (SST) and sub±wire harness (SST)
from the actuator.
SST 09990±00150 and 09990±00163
(b) Connect the actuator connectors.
(e) Clear the diagnostic codes.
(See page BR±70) (i) Push and hold in the MOTOR switch for a few sec-
onds.
(j) Depress the brake pedal and hold it for about 15
seconds. As you hold the pedal down, push the
MOTOR switch for a few seconds. Check that the
brake pedal does not pulsate.
6. PUSH MOTOR SWITCH
Push and hold in the MOTOR switch for a few seconds.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±86

REMOVAL OF BRAKE ACTUATOR
1. TAKE OUT FLUID WITH SYRINGE OR AN
EQUIVALENT
CAUTION: Do not let brake fluid remain on a painted
surface. Wash it off immediately.
3. REMOVE ACTUATOR
(a) Using SST, disconnect the six brake tubes from the
actuator as shown.
SST 09751±36011
(b) Remove the three nuts, wave washers and washers.
(c) Remove the actuator from the actuator bracket. 2. DISCONNECT ACTUATOR CONNECTORS
Disconnect the three connectors from the actuator.
4. REMOVE THREE HOLDERS AND CUSHIONS
Remove the three holders and cushions.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±87

6. REMOVE BRAKE TUBES
(w/o LSPV)
Using SST, remove the five brake tubes from the actuator.
SST 09751±36011
(w/ LS PV)
Using SST, remove the four brake tubes from actuator.
SST 09751±36011
7. REMOVE PROPORTIONING VALVE OR THREE±WAY
UNION
(w/o LSPV)
(a) Remove the two bolt and remove the proportioning
valve from the actuator.
(b) Remove the bolt and remove the valve bracket. 6. REMOVE CONTROL RELAYS
(a) Remove the connector from the wire harness clarnp.
(b) Remove the screw and remove the wire harness
clamp.
(d) Remove the relay cap from the control relays.
(e) Remove the two control relays from the actuator. (e) Remove the relay case.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±88

(w/o LSPV)
(b) Using a proportioning valve installation bolt, install
the valve bracket in place and tighten the bolt.
Torque: 90 kg±cm (78 in.±Ib, 8.8 N±m)
(c) Remove the proportioning valve installation bolt.
(d) Temporarily install the proportioning valve.
INSTALLATION OF BRAKE ACTUATOR
1. TEMPORARILY INSTALL FOLLOWING PARTS
(a) Temporarily install the three±way union with a bolt. (w/ LS PV)
Remove the two bolts and remove the three±way union
from the actuator.
8. REMOVE THREE±WAY UNION
Remove the bolt and three±way union.
(w/ LSPV)
Temporarily install the three±way union.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±89