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Home >> Chevrolet >> 2001 >> Impala Base, 3.8 K >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Anti-Lock Brake System With Traction Control System - BOSCH 5.3) >> Diagnostic Tests >> DTC C0161: Abs/TCS Brake Switch Circuit Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2001 Pontiac Grand Prix, 2001 Pontiac Firebird, 2001 Oldsmobile Intrigue, and 2001 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

Stoplight switch is a normally open switch, when brake pedal is depressed, EBCM will sense battery voltage. This allows EBCM to determine state of brake lights.

DTC sets when EBCM detects battery voltage at all times, EBCM never detects battery voltage from stoplight switch or both brake lights are faulty.

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