Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

OK
(4) Chock the 4 wheels and release the parking brake.
(5) Turn the ignition switch to ON and measure the brake booster pump operating time (the time from
when the brake booster pump starts operating until it stops).
OK:
20 to 80 seconds
(6) Start the engine after the brake boost pump stops.
(7) Check that the ABS warning light and slip indicator light are not illuminated.
(8) Turn off the engine, and then turn the ignition switch to ON.
(9) Check that the brake boost pump operates and then stops when the brake pedal is depressed 4 or
5 times.
(10) Depress the brake pedal 4 or 5 times and measure the brake booster pump operating time (the
time from when the brake booster pump starts operating until it stops).
OK:
2 to 11 seconds
(11) Check that the brake warning light illuminates and the buzzer sounds when the brake pedal is
fully depressed continuously 15 to 20 times.
NOTICE:
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ait 120 seconds or more after turning the ignition switch to ON before performing this inspection.
(b) Check brake booster operation.
(1) Turn the ignition switch off.
(2) Depress the brake pedal 20 times or more to release the pressure in the accumulator.
HINT:
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hen the pressure is released, the brake pedal stroke becomes longer.
(3) Depress the brake pedal, start the engine, and check the change in the brake pedal height.
OK:
The brake pedal moves slightly inward.
(c) Inspect brake master cylinder fluid pressure change
.
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GO TO STEP 5
3. READ VALUE USING DATA LIST (ACCUMULATOR SENSOR)
(
a) Connect Techstream to the DLC3.
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