Toyota 4Runner: Inspection

Toyota 4Runner Service Manual / Brake / Brake System (other) / Hydraulic Brake Booster / Inspection

INSPECTION

PROCEDURE

1. INSPECT BRAKE BOOSTER PUMP ASSEMBLY

(a) Apply battery voltage to the brake booster pump cables, and check the operation of the pump motor.

OK::

Measurement Condition	Specified Condition
Battery positive (+) voltage → Red cable terminal	Pump motor operates
Battery negative (-) voltage → Black cable terminal	Pump motor operates

Text in Illustration

*1	Red Cable
*2	Black Cable

If the result is not as specified, replace the brake booster pump assembly.

Disassembly

DISASSEMBLY PROCEDURE 1. REMOVE NO. 1 BRAKE ACTUATOR BRACKET (a) Using a 5 mm hexagon wrench, remove the bolt and No. 1 brake actuator bracket. ...

Reassembly

REASSEMBLY PROCEDURE 1. INSTALL BRAKE BOOSTER PISTON SIB-ASSEMBLY (a) Apply a light coat of lithium soap base glycol grease to a new piston. (b ...

Other materials about Toyota 4Runner:

Air conditioning filter
The air conditioning filter must be changed regularly to maintain air conditioning efficiency. Removal method Turn the engine switch (vehicles without a smart key system) or “ENGINE START STOP” switch (vehicles with a smart key system) off. Ope ...

Shifting between H4L and L4L
Shifting from H4L to L4L Stop the vehicle completely and continue to depress the brake pedal. Shift the shift lever to N. Push the “UNLOCK” button and then push and turn the fourwheel drive control switch to L4L. Maintain this condition until t ...