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 TCC brake switch circuit between PCM and switch.

Fig 1: Code 37 Schematic (Corvette) TCC Brake Switch Error

Fig 2: Code 37 Diagnostic Flow Chart (Corvette) TCC Brake Switch Error