Circuit Description

EBD warning light (brake warning light) is controlled by ESP® control module and BCM through light driver module in combination meter.

If EBD system is in good condition, ESP® control module turns ON EBD warning light (brake warning light) when engine switch is pressed to change ignition mode of keyless push start system to ON, keeps it ON for 2 seconds and then turns it OFF.

EBD warning light (brake warning light) is turned ON continuously at the following conditions.

• EBD system has an abnormality
• Parking brake lever is pulled up
• Brake fluid level is lower than minimum level

The information of parking brake switch and brake fluid level is transmitted from BCM to light driver module in combination meter through CAN communication line.

Also, it is turned ON continuously by light driver module when the connector of ESP® control module is disconnected.