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BR-4
BRAKE - BRAKE FLUID

BRAKE FLUID BR1ME-01

BLEEDING
HINT:
S If any work is done on the brake system or if air in the
brake lines is suspected, bleed the air from the system.
S When bleeding, keep the amount of the fluid within the
line of reservoir between Min. and Max.
NOTICE:
S Do not let brake fluid remain on painted surfaces.
Wash it off immediately.
S With the reservoir cap removed, when depressing the
brake pedal, the fluid will spray.
1. FILL RESERVOIR WITH BRAKE FLUID
Fluid: SAE J1703 or FMVSS NO. 116 DOT3
2. In case of using TOYOTA hand-held tester:
BLEED HYDRAULIC BRAKE BOOSTER
HINT:
If the hydraulic brake booster has been disassembled, discon-
nect the brake line from the hydraulic brake booster or if the res-
ervoir becomes empty, bleed the hydraulic brake booster.
(a) Turn the ignition switch OFF, depress the brake pedal
more than 40 times.
HINT:
When a pressure in power supply system is released, reaction
force becomes heavy and stroke becomes shorter.
(b) Turn the ignition switch ON, check that the pump stops af-
ter approx. 30 to 40 sec.
NOTICE:
When the pump does not stop, repeat step (a) and (b) again.
(c) With the ignition switch remained ON, depress the brake
pedal more than 20 times.
(d) Observe the procedure in step 4 and bleed the right and
left front brake caliper.
(e) Holding the brake pedal depressed, bleed the right and
left rear brake caliper.
HINT:
It is not necessary to depress the pedal continuously, as brake
fluid flows out by first depressing.

TOYOTA Hand-held Tester (f) Connect the TOYOTA hand-held tester.
(1) Turn the ignition switch OFF, connect the TOYOTA
hand-held tester to DLC3.
(2) Turn the ignition switch ON and select "AIR BLEED-
ING" on the TOYOTA hand-held tester.
HINT:
Please refer to the TOYOTA hand-held tester operator's manu-
al for further details.
DLC3 F13739

2002 4RUNNER (RM887U)

Author : Date : 1311
BR-5
BRAKE - BRAKE FLUID

(g) Bleed right front brake line.
(1) Select "FR LINE" on the TOYOTA hand-held tester.
(2) With "FR LINE" turned ON with the TOYOTA hand-
held tester, depress the brake pedal and hold it to
bleed the right front brake caliper.
(3) Repeat step (2) until there are no more air bubbles
in the fluid.
(h) Bleed left front brake line.
(1) Select "FL LINE" on the TOYOTA hand-held tester.
(2) With "FL LINE" turned ON with the TOYOTA hand-
held tester, depress the brake pedal and hold it to
bleed the left front brake caliper.
(3) Repeat step (2) until there are no more air bubbles
in the fluid.
(i) Bleed rear brake line.
(1) Select "RR LINE" on the TOYOTA hand-held tester.
(2) With "RR LINE" turned ON with the TOYOTA hand-
held tester, bleed the left and right rear brake cali-
per.
(j) Disconnect the TOYOTA hand-held tester from DLC3.
(k) Clear the DTC (See page DI-224 ).
3. In case of using ABS actuator checker (SST):
BLEED HYDRAULIC BRAKE BOOSTER
HINT:
If the hydraulic brake booster has been disassembled, discon-
nect the brake line from the hydraulic brake booster or if the res-
ervoir becomes empty, bleed the hydraulic brake booster.

(a) Disconnect the 2 connectors from the hydraulic brake
booster.

F13920

2002 4RUNNER (RM887U)

Author : Date : 1312
BR-6
BRAKE - BRAKE FLUID

(b) Connect the ABS actuator checker (SST) to the hydraulic
brake booster side wire harness via the sub-wire harness
(SST), as shown in the chart below.
SST 09990-00150, 09990-00480
HINT:
Connect the connector with the label of "AIR BLEED" attached
to the connector of ABS actuator checker.
(c) Connect the red cable of the checker to the battery posi-
tive (+) terminal and the black cable to the negative (-) ter-
minal.
ABS Actuator Checker (SST)

Sub-wire Harness S (SST)

AIR BLEED

FRONT

Hydraulic Brake
Booster
REAR

F02821

(d) Turn the ignition switch OFF, depress the brake pedal
more than 40 times.
HINT:
When a pressure in power supply system is released, reaction
force becomes heavy and stroke becomes shorter.
(e) Turn the ignition switch ON, check that the pump stops af-
ter 30 to 40 sec.
NOTICE:
When the pump does not stop, repeat step (d) and (e) again.
(f) With the ignition switch remained ON, depress the brake
pedal more than 20 times.
(g) Observe the procedure in step 4 and bleed the right and
left front brake caliper.
(h) Holding the brake pedal depressed, bleed the right and
left rear brake caliper.
HINT:
It is not necessary to depress the pedal continuously, as brake
fluid flows out by first depressing.

2002 4RUNNER (RM887U)

Author : Date : 1313
BR-7
BRAKE - BRAKE FLUID

(i) Bleed right front brake line.
(1) Turn the selector switch of the ABS actuator check-
er to the "FRONT RH" position.
(2) Push and hold in MAIN push switch, depress the
brake pedal and hold it to bleed the right front brake
caliper.
NOTICE:
Do not keep the MAIN switch pushed in for more than 10
F02823 sec. When operating it continuously, set the interval of
more than 20 sec.
(3) Repeat step (2) until there are no more air bubbles
in the fluid.

(j) Bleed left front brake line.
(1) Turn the selector switch of the ABS actuator check-
er to the "FRONT LH" position.
(2) Push and hold in the MAIN push switch, depress the
brake pedal and hold it to bleed the left front brake
caliper.
NOTICE:
Do not keep the MAIN switch pushed in for more than 10
F02824 sec. When operating it continuously, set the interval of
more than 20 sec.
(3) Repeat step (2) until there are no more air bubbles
in the fluid.

(k) Bleed right rear brake line.
(1) Push and hold in the "SUB LH" and "SUB RH"
switches, bleed the right rear brake caliper.
NOTICE:
Do not keep the MAIN switch pushed in for more than 10
sec. When operating it continuously, set the interval of
more than 20 sec.
(2) Repeat step (1) until there are no more air bubbles
F02825 in the fluid.

2002 4RUNNER (RM887U)

Author : Date : 1314
BR-8
BRAKE - BRAKE FLUID

(l) Observe the procedure in step (k) and bleed left rear
brake line.
(m) Disconnect the ABS actuator checker (SST) and sub-
wire harness (SST) from the actuator.
SST 09990-00150, 09990-00480
(n) Connect the 2 connectors to the hydraulic brake booster.
(o) Clear the DTC (See page DI-224 ).

4. BLEED BRAKE LINE
(a) Connect the vinyl tube to the brake caliper.
(b) Depress the brake pedal several times, then loosen the
bleeder plug with the pedal held down.
(c) At the point when fluid stops coming out, tighten the
bleeder plug, then release the brake pedal.
(d) Repeat (b) and (c) until all the air in the fluid has been bled
out.
Z03605 (e) Repeat the above procedure to bleed the brake line for
each wheel.
Torque: 11 N

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