Voyager V6-3.0L VIN 3 (1998)
Brake Warning Indicator: Description and Operation
The red Brake warning lamp is located in the instrument panel cluster and is used to indicate a low brake fluid condition or that the parking brake is
applied. In addition, the brake warning lamp is turned on as a bulb check by the ignition switch every time the ignition switch is turned to the crank
position.
The warning lamp bulb is supplied a 12 volt ignition feed anytime the ignition switch is on. The bulb is then illuminated by completing the ground circuit
either through the park brake switch, the fluid level sensor in the master cylinder reservoir, or the ignition switch when it is turned to the crank position.
The Brake Fluid Level sensor is located in the brake fluid reservoir of the master cylinder assembly. The purpose of the sensor is to provide the driver
with an early warning that brake fluid level in the master cylinder fluid reservoir has dropped to below normal. This may indicate: (1) Abnormal loss of
brake fluid in the master cylinder fluid reservoir resulting from a leak in the hydraulic system. (2) Brake shoe linings which have worn to a point
requiring replacement.
As the brake fluid drops below the minimum level, the brake fluid level sensor closes to ground the brake warning light circuit. This will turn on the red
brake warning light. At this time, master cylinder fluid reservoir should be checked and filled to the full mark with DOT 3 brake fluid. If brake fluid level
has dropped below the add line in the master cylinder fluid reservoir, the entire brake hydraulic system should be checked for evidence of a leak.
