Document e9NGQR5jY3o6KvbM64mawymp

LESSON ONE-MODULE 1 BRAKE SYSTEM DIAGNOSIS AND TESTING Red Brake Warning Indicator Always On Illuminated Red Brake Warning Indicator Lamp A WARNING: IF THE BRAKE WARNING INDICATOR IS ALWAYS ON, A SEVERE BRAKE CONCERN MAY EXIST. CHECK FOR PROPER OPERATION OF THE VEHICLE BRAKES BEFORE OPERATING THE VEHICLE. The indicator could be illuminated by: Parking brake not fully released. Low brake fluid level in the master cylinder. Shorted indicator circuit. Faulty indicator switch. Brake Warning Indicator Always On Diagnosis To determine the cause of an illuminated brake warning indicator, perform the following checks: Make sure that the parking brake is fully released. Check the fluid level in the master cylinder reservoir. Check for external leaks at the master cylinder. Check for external leaks in the hydraulic system. Check for a shorted brake warning indicator circuit Check for a faulty indicator switch. 16 September, 2005 Brake System Diagnosis and Repair.