I have a 2006 Chevrolet Malibu Maxx and the ABS light and traction control lights came on at the same time…. what could be wrong?
RESPONSE
Most common reason would be the ABS Sensor inside the hub bearing assembly. The entire hub bearing will have to be replaced. The hub bearing starts to wear and damages the internal speed sensor. This will cause the ABS Light and traction control light to come on. The good news is the car can be driven without fear of it braking down. However the traction control and the ABS will not be functional.
ABS Light
The IPC illuminates the ABS indicator when the following occurs.
| • | The electronic brake control module (EBCM) detects an ABS-disabling malfunction and sends a serial data message to the IPC requesting illumination. |
| • | The IPC performs the bulb check. |
| • | The IPC detects a loss of serial data communication with the EBCM. |
| • | The EBCM sends a serial data message to the IPC requesting illumination. |
Low Traction Indicator
The IPC illuminates the low traction indicator when the following occurs:
| • | The electronic brake control module (EBCM) detects a traction control event. The IPC receives a serial data message from the EBCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Traction Control Light
The IPC illuminates the traction off indicator when the following occurs.
| • | The EBCM disables engine torque reduction due to a malfunction and sends a serial data message to the IPC requesting illumination. |
| • | The driver manually disables VSES and engine torque reduction by pressing the traction control switch. The EBCM sends a serial data message to the IPC requesting illumination. |
The IPC flashes the traction off indicator if wheel slip is detected while engine torque reduction and brake pressure application are both disabled.