Description & Operation

The Traction Control (TCL) system utilizes information from many on-vehicle systems to limit front wheel slippage under acceleration due to lack of front wheel traction. Traction is controlled by limiting engine power, (vehicle brakes are not used). A vacuum-operated diaphragm (actuator) is connected to throttle linkage and limits throttle valve opening. When front wheel slippage is detected by Anti-Lock Braking System (ABS) wheel speed sensors, a signal is sent from ABS module to TCL module, then to Engine Control Module (ECM), controlling actuator.

The TCL system also offers TRACE control. This feature controls under-steer during high speed acceleration in turns. Components of the Electronically Controlled Suspension (ECS) system are used as input signals to the TCL module. Operation of both traction and trace control can be switched off with TCL mode switch, located on center console.