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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 216 (Hydraulic Brakes - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC C004B >> Circuit/System Description

Circuit/System Description

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The B20 Brake Fluid Level Switch is a normally open switch that closes when the brake fluid is below the minimum level. The switch is magnetically actuated by a float. The K160 Brake System Control Module monitors the switch on signal circuit 333 and the switch receives a constant ground on ground circuit 750.

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