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01 SNR9A00D14300014701FEAT00 Functional Test Leak Test 19-26 Conventional Brake Components Brake Booster Test A 1. With the ignition switch in LOCK (0), press the brake pedal several times to deplete the vacuum 2. Start the engine with the brake pedal pressed. If the brake pedal sinks slightly, the vacuum booster is 1. Press the brake pedal with the engine running, then stop the engine. The brake pedal height should not • If the pedal height rises, go to step 6. 2. Start the engine and let it idle for 30 seconds. Turn the ignition switch to LOCK (0), and wait • If it rises the booster is OK. 3. Disconnect the brake booster vacuum hose (A) at the booster. The check valve is built into the hose. NOTE: If the check valve is faulty, replace the brake 4. Start the engine, and let it idle. There should be vacuum available. • If no vacuum is available, the check valve is not working properly. Replace the brake booster • If there is vacuum, go to step 5. 5. With the ignition switch in LOCK (0), reconnect the vacuum hose to the brake booster. 6. Start the engine, and then pinch the brake booster vacuum hose between the check valve and the 7. Turn the ignition switch to LOCK (0), and wait 30 seconds. Press the brake pedal several times • If the pedal position does not vary inspect the seal between the master cylinder and booster. If • If the pedal position varies, replace the brake booster vacuum hose/check valve as an 08/08/21 15:01:00 61SNR030_190_0026 |