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Home >> Pontiac >> 2004 >> GTO Standard >> Repair and Diagnosis >> Brakes >> Antilock Brake System And Traction Control System >> Diagnostic Information and Procedures >> Traction Control Indicator Inoperative >> Circuit Description

Circuit Description

The TCS OFF Indicator is controlled by the electronic brake control module (EBCM) by sending a signal to the instrument panel cluster (IPC). It is turned on when the EBCM sets a DTC that turns on the TCS OFF indicator. It is also turned on or off when the Control Switch is pressed. The EBCM supplies 12 volts to the Traction Control Switch, when the TCS switch is depressed the EBCM sees the voltage go low, and that the TCS switch state has changed. When the EBCM receives that a switch state has changed it turns on or off the Traction Control and sends a message to the IPC to turn on or off the TCS OFF indicator depending on its previous state.

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