Honda Pilot: Brake System Inspection and Test

Honda Pilot 2016-2022 (YF5/YF6) Service Manual / Inspection Info / Brake System Inspection and Test

Inspection

1. Brake System - Inspect

Inspect the brake system components listed. Repair or replace any parts that are leaking or damaged.

Component Inspections:

Component	Procedure	Also check for
Master Cylinder	Look for damage or signs of fluid leakage at: Reservoir, or master cylinder body. Lines and grommets, and their joints. Between master cylinder and booster.	Bulging seal at reservoir cap. This is a sign of fluid contamination.
Brake Hoses	Look for damage or signs of fluid leakage at: Line joints and banjo bolt connections. Hoses and lines, also inspect for twisting or damage.	Bulging, twisted, or bent lines.
Caliper	Look for damage or signs of fluid leakage at: Piston seal. Banjo bolt connections. Bleed screw.	Seized or sticking caliper pins.
VSA Modulator-Control Unit	Look for damage or signs of fluid leakage at: Line joints. Modulator-control unit.

Test

1. Brake System - Test

Brake pedal sinks/fades when braking

Set the parking brake, and start the engine, then turn off the A/C. Allow the engine to warm up to normal operating temperature (radiator fan comes on twice).
Make sure the steering column lock lever is in the locked position. Attach a 50 mm (1.97 in) piece of masking tape along the bottom of the steering wheel, and draw a horizontal reference mark across it.
With the transmission in P or N, press and hold the brake pedal lightly (about the same pressure needed to keep an A/T-equipped vehicle from creeping), then release the parking brake.
While still holding the brake pedal, hook the end of the tape measure behind the brake pedal, then pull the tape up to the steering wheel. Note the measurement between the brake pedal and the reference mark on the steering wheel.
Apply steady pressure to the brake pedal for 3 minutes.
Watch the tape measure.

If the measurement increases 10 mm (0.39 in) or less, the master cylinder is OK.
If the measurement increases more than 10 mm (0.39 in), replace the master cylinder.

Honda Pilot 2016-2022 (YF5/YF6) Service Manual

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