Stratus L4-2.0L VIN C (1997)
Brake Warning Indicator: Description and Operation
ABS Warning Lamp Circuit Operation
CIRCUIT OPERATION
ABS Warning Lamp
The ABS warning lamp is an output from the Controller Anti Lock Brake (CAB) and the ABS relay box. It is used to alert the operator of a
problem in the ABS system. The G19 circuit from the CAB and the ABS system relay is used to detect a problem. If a problem is detected, the
CAB grounds the G19 circuit and illuminates the lamp in the instrument cluster.
Circuit G19 is also an output of the CAB to the ABS system relay contact side.
Brake Warning Lamp
The brake warning lamp is used to alert the operator of a problem in the vehicles braking system. This lamp also illuminates when the ignition
switch is turned to the START position to perform a self check.
Power for the lamp is supplied on circuit F11. This circuit is HOT when the ignition switch is in the OFF START, and RUN positions. The F11
circuit is protected by a 10 amp fuse located in cavity 11 of the junction block.
There are two switches used in this system and they are wired in parallel form. A parking brake switch, located on the parking brake mechanism,
will illuminate the lamp if the normally OPEN switch is CLOSED. This switch is case grounded.
The second switch used is the brake warning lamp switch. This switch in normally OPEN. When the brake system pressure is below the
predetermined level the switch CLOSES and completes a path to ground.
The G9 circuit is used to connect the switches to the cluster. Grounding for the brake warning lamp switch is completed on the Z1 circuit which
terminates at the left strut tower.
If the vehicle is built for sale in Canada the parking brake switch is used for the Daytime Running Lamp (DRL) system.
