Test Description

WARNING: This page is about a different car, the 1995 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Test numbers refer to numbers on diagnostic chart.

Checks for voltage at brake switch.
Simulates brake switch closed or brakes off. Checks brake switch circuit between PCM and switch.
Checks circuit between brake switch and PCM.

Fig 1: Code 38 Schematic (Corvette) Brake Switch Error

Fig 2: Code 38 Diagnostic Flow Chart (Corvette) Brake Switch Error