Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

A
INSPECTION PROCEDURE
HINT:
When C1253, C1254 or C1256 is output together with C1252, inspect and repair the trouble areas
indicated by C1253, C1254 or C1256 first.
PROCEDURE
1. CHECK HYDRAULIC BRAKE BOOSTER PUMP MOTOR OPERATION
(a) Turn the ignition switch to OFF.
(b) Depress the brake pedal more than 20 times.
(c) Turn the ignition switch to the ON position.
(d) Check how the hydraulic brake booster pump motor operates.
RESULT PROCEED TO
Pump motor does not operate A
Pump motor operates continuously (Does not stop) B
Pump motor operates intermittently C
Pump motor operates, then stops D
B
REPLACE HYDRAULIC BRAKE BOOSTER
C
GO TO STEP 4
D
GO TO STEP 5
2. CHECK BRAKE PUMP MOTOR WIRE HARNESS CONNECTION (MT+ / MT-)
(a) Using a screwdriver, remove the 2 plugs from the hydraulic brake booster .
(b) Check the tightening torque of 2 screws which fasten the wire harness connecting hydraulic brake
booster and brake booster pump .
Torque:
2.9 N·m {30 kgf·cm, 26in·lbf}
NG
RETIGHTEN SCREWS
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