Brake System

The IPC provides brake system messages for the following concerns and status:

• ABS concerns that display along with the brake warning indicator operation
• Ceramic brakes worn
• Low brake fluid level
• Parking brake applied status

When the parking brake is applied, the BCM sends the parking brake chime request to the GWM over the HS-CAN1. The GWM sends the message to the IPC over the HS-CAN3 to illuminate the brake warning indicator and turn on the parking brake applied message in the message center.

When a low brake fluid level condition exists, the BCM sends the brake fluid level low message request to the GWM over the HS-CAN1. The GWM sends the message to the IPC over the HS-CAN3 to illuminate the brake warning indicator and turn on the brake fluid level low message in the message center.

When an ABS or parking brake system concern exists, the ABS module sends the brake (red) warning indicator request message to the GWM over the HS-CAN2. The GWM sends the brake (red) warning indicator request message to the IPC over the HS-CAN3 to illuminate the ABS warning indicator and to turn on the check brake system message center warning display.

The brake wear sensors (left front, right front, left rear and right rear) are all hardwired in series to the IPC. When any of the 4 sets of brake pads wear sufficiently to activate the brake pad wear switch, the brake pad switch opens and the IPC turns on the brake wear RTT indicator and displays the ceramic brakes replace front brake pads message.