Grand AM L4-144 2.4L DOHC VIN T SFI (1997)
Brake Warning Indicator: Description and Operation
General
The BRAKE Indicator lamp has two functions. First, it will light whenever the park brake is set. Second, a switch built into the brake master cylinder
reservoir will signal the EBCM if the brake fluid level drops below a safe level. The EBCM will command the indicator "ON" via serial data with the
IPC. In addition, the indicator is commanded "ON" when the EBCM is initially powered up (ignition in "RUN" position). With the ignition in the
"OFF!UNLOCK" or "CRANK" positions (loss of EBCM serial data), the telltale will also be illuminated.