isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Relays and Modules - Brakes and Traction Control > < Vacuum Brake Booster Check Valve|Locations
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Vacuum Brake Booster Check Valve: Testing and Inspection

Vacuum Hose And Bracket

BOOSTER CHECK VALVE TEST

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Disconnect the brake booster vacuum hose at the booster or at the booster side of the valve.

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Start the engine and let it idle. There should be vacuum. If no vacuum is available, the check valve is not working properly. Replace the check
valve and retest.

Relays and Modules - Brakes and Traction Control > < Vacuum Brake Booster Check Valve|Locations