S Nissan Sentra Manuals Library
Factory-style information for owners and repair work

Nissan Sentra techinfo

Find Nissan Sentra owner information, maintenance instructions, technical references, service procedures and useful repair pages in one clean online library.

Quick access Sentra Docs
B18 Owner's 2020-2025 Sentra owner information B18 Service 2020-2025 Sentra Workshop manual B17 Owner's 2013-2019 Sentra owner documentation B17 Service 2013-2019 Sentra service information

Nissan Sentra B18 (2020-2025) Service Manual: Brake Booster. Inspection

Inspection

Inspection

BRAKE BOOSTER

Operation

Depress the brake pedal several times at five second intervals with the engine stopped. Start the engine with the brake pedal fully depressed. Check that the clearance between brake pedal and dash lower panel decreases.

Note:

A slight impact with a small click may be felt on the pedal when the brake pedal is fully depressed. This is normal brake system operation.

Vacuum Inspection

Idle the engine for one minute to apply vacuum to the brake booster. Stop the engine. Depress the brake pedal several times at five second intervals until the accumulated vacuum is released to atmospheric pressure. Check that the clearance between brake pedal and dash lower panel gradually increases (A –>B –>C) each time the brake pedal is depressed during this operation.

Depress the brake pedal with the engine running. Then stop the engine while holding down the brake pedal. Check that the brake pedal stroke does not change after holding down the brake pedal for 30 seconds or more.

Note:

A slight impact with a small click may be felt on the pedal when the brake pedal is fully depressed. This is normal brake system operation.

    Brake Master Cylinder. Inspection
    Inspection Inspection Check for brake fluid leaks at the following areas: Master cylinder mounting face Master cylinder reservoir tank mounting face Brake tube and brake tube co...
    Vacuum Lines. Inspection
    Inspection Inspection Check the vacuum hoses for damage, deterioration, and foreign matter. Check the vacuum tubes for damage, deterioration, and foreign matter.

    Other materials:

    Illumination Control Switch Signal Circuit
    Diagnosis Procedure Diagnosis Procedure CHECK COMBINATION METER INPUT SIGNAL Ignition switch ON. Check voltage between the following terminals of the illumination co ...

    Fuel Tank Temperature Sensor
    Component Inspection Component Inspection CHECK FUEL TANK TEMPERATURE (FTT) SENSOR Turn ignition switch OFF. Disconnect fuel level sensor unit and fuel pump harness connector. Remov ...

    Basic Inspection
    Diagnosis and Repair Work Flow Work Flow Work Flow OVERALL SEQUENCE DETAILED FLOW GET INFORMATION FOR SYMPTOM Get detailed information from the customer about the symptom (the condition and the environment ...