Toyota Tacoma 2015-2018 Service Manual: Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE BRAKE ACTUATOR BRACKET NO. 1
(a) Using a hexagon wrench (5 mm), remove the screw and brake actuator bracket No. 1.
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(b) Using a screwdriver, remove the fluid level warning switch connector. |
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2. REMOVE BRAKE MASTER CYLINDER RESERVOIR SUB-ASSEMBLY
(a) Remove the screw from the master cylinder reservoir.
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(b) Using a pin punch and hammer, remove the pin from the master cylinder reservoir. |
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(c) Pull out the master cylinder reservoir.
(d) Remove the 3 grommets.
(e) Remove the cap.
3. REMOVE BRAKE ACTUATOR HOSE NO. 1
(a) Using needle-nose pliers, slide the 2 clips.
(b) Remove the brake actuator hose.
4. REMOVE BRAKE ACTUATOR TUBE NO. 1
(a) Using a union nut wrench, remove the brake actuator tube No. 1.
5. REMOVE BRAKE BOOSTER WITH ACCUMULATOR PUMP ASSEMBLY
(a) Using a screwdriver, remove the 2 plugs.
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(b) Remove the 2 screws and pull the wire harness. |
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(c) Using a screwdriver, remove the clip. |
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(d) Remove the brake booster w/ accumulator pump assembly. |
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(e) Using a hexagon wrench (4 mm), remove the 2 pins. |
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(f) Remove the 2 bushes and 2 collars from the brake booster with accumulator pump assembly.
6. REMOVE BRAKE ACTUATOR BRACKET
(a) Using a hexagon wrench (5 mm), remove the screw and brake actuator bracket.
7. REMOVE BRAKE BOOSTER PUMP BRACKET
(a) Using a hexagon wrench (5 mm), remove the 2 screws and brake booster pump bracket.
(b) Remove the bush from the brake booster pump bracket.
8. REMOVE MASTER CYLINDER PUSH ROD CLEVIS
(a) Loosen the lock nut on the brake master cylinder side, and then remove the rod operating adapter and lock nut.
(b) Loosen the lock nut on the rod operating adapter, and then remove the push rod clevis and lock nut.
9. REMOVE MASTER CYLINDER BOOT
10. REMOVE PISTON
(a) Which pressing in the piston with a screwdriver, use a pin or equivalent to push the C-ring from the hole in the master cylinder body. Then remove the snap ring with another screwdriver.
(b) Remove the piston by pulling it straight out, not at an angle.
NOTICE:
- If the piston is pulled out at an angle, there is a possibility that the cylinder bore could be damaged.
- Be careful not to damage the rubber lips on the piston when reassembling.
11. REMOVE MASTER CYLINDER SOLENOID
(a) Remove the 6 bolts.
(b) Remove the master cylinder solenoid and the gasket.
12. REMOVE BRAKE BOOSTER ACCUMULATOR ASSEMBLY
(a) Place the brake booster with accumulator pump assembly in a vise with a cloth.
(b) Using a socket wrench (17 mm), remove the brake booster accumulator.
(c) Remove the brake booster accumulator pipe, compression spring and O-ring.
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT BRAKE MASTER CYLINDER FLUID PRESSURE CHANGE
(a) Inspect the battery positive voltage.
Battery positive voltage:
10 to 14 V
(b) Turn the ignition switc ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
NOTICE:
Before starting the work, make sure that the ignition switch is off
and depress the brake pedal more than 20 times.
As high pressure is appli ...
Other materials:
Brake Warning Light does not Come ON
DESCRIPTION
Refer to Brake Warning Light Remains ON (See page
).
WIRING DIAGRAM
Refer to Brake Warning Light Remains ON (See page
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform
calibration (See page
).
Inspect ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK AND MAIN BODY ECU (MULTIPLEX NETWORK BODY
ECU)
(a) Disconnect the MB main body ECU (multiplex network body ECU) connectors.
(b) Measure the voltage and resistance according to the value(s) in the table
below.
HINT:
Measure the values on ...
Electrical System
Electrical System Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This ...
