Toyota 4Runner manuals

Toyota 4Runner: On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT BRAKE BOOSTER ASSEMBLY

(a) Airtightness check

(1) Start the engine and stop it after 1 or 2 minutes. Slowly depress the brake pedal several times.

If the pedal can be depressed to the floor the first time, but on the 2nd and 3rd times cannot be depressed as far, the booster is airtight.

Text in Illustration

*a

CORRECT

*b

INCORRECT


(2) Depress the brake pedal while the engine is running and stop the engine with the brake pedal depressed.

If there is no change in the pedal reserve distance while holding the pedal for 30 seconds, the booster is airtight.

(b) Operation check

(1) Depress the brake pedal several times with the ignition switch off and check that there is no change in the pedal reserve distance when the pedal is depressed.


(2) Depress and hold down the pedal and start the engine.

If the pedal goes down slightly, operation is normal.


Components
COMPONENTS ILLUSTRATION ...

Removal
REMOVAL CAUTION / NOTICE / HINT NOTICE: Make sure to release the vacuum from the brake booster before removing the master cylinder from the brake booster. PROCEDURE 1. DRAIN BRAKE FLUID NOTICE ...

Other materials about Toyota 4Runner:

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART NOTICE: Turn the ignition switch off before removing parts. HINT: If no abnormality is found when inspecting parts, inspect the stabilizer control ECU and ground points for poor contact. If a trouble code is ou ...

Inspection
INSPECTION PROCEDURE 1. INSPECT SPIRAL CABLE SUB-ASSEMBLY (a) If there are any defects as mentioned below, replace the spiral cable with a new one: Scratches, cracks, dents or chips in the connector or spiral cable. (b) Check the spiral cable. Text in ...

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