Circuit Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic test functions on the assumption that a brake application causes a sudden decrease in non-drive wheel speed.
The extended travel brake switch is a normally closed switch. When the extended travel brake switch is closed, the powertrain control module (PCM) detects ignition voltage on the extended travel brake switch signal circuit.
If the PCM detects voltage on the extended travel brake switch signal circuit when the extended travel brake switch should be open, this DTC sets.