DTC B2597: Traction Control/Suspension Switch Circuit (Short To Ground): Description

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

Traction control/suspension switch control circuit provides a ground input to Body Control Module (BCM) when switch is pressed. If BCM detects a ground on Brown/White wire when TCS is off, BCM will send signal on serial data line to Electronic Brake Traction Control Module (EBTCM) to turn on TCS. If BCM detects a ground when traction control system is on, BCM will send signal to EBTCM to turn off traction control system. BCM monitors traction control/suspension switch control circuit to determine how long a ground has been applied.

DTC B2597 will set when BCM detects a ground in Brown/White wire for longer than 60 seconds. If vehicle speed is detected, PCM may disable fuel supply to engine. No driver warning message will be displayed. If conditions for malfunction no longer exist, history DTC will clear after 50 consecutive ignition cycles. DTC B2597 will also clear when conditions no longer exist, and Instrument Panel Cluster (IPC) or scan tool is used to clear codes.

NOTE: If DTC B2597 is a history code, problem may be intermittent. Wiggle wires while performing the following test.