Cube L4-1.8L (MR18DE) (2010)
Vacuum Brake Booster: Procedures
BRAKE BOOSTER
Inspection
OPERATION
Depress the brake pedal several times at 5-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.
AIR TIGHT
1. Run the engine for 1 minute to apply vacuum to the brake booster, and stop the engine. Then depress the brake pedal several times at 5-second
intervals until the accumulated vacuum is released to atmospheric pressure. Check that the clearance between brake pedal and dash lower panel
gradually increases each time the brake pedal is depressed when performing this operation.
2. 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.