Grand Caravan FWD V6-229 3.8L VIN L MFI (1997)
Brake Warning Indicator: Description and Operation
General Information
GENERAL INFORMATION
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.
