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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P1574: Stoplight Switch Circuit ("Y" Body) >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

Stoplight switch is normally open. When switch is closed, Throttle Actuator Control (TAC) module senses ignition voltage on brakelight switch signal circuit. DTC will set if TAC module senses voltage on brakelight switch signal circuit when switch should be open.

Conditions for setting DTC are: engine speed greater than 700 RPM, wheel speed greater than 30 MPH to activate diagnostic (diagnostic will be disabled if wheel speed is less than 10 MPH), vehicle speed is decreasing at a rate greater than 10.4 MPH during a one second period.

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