Sidekick JSS 4D Hard Top 2WD L4-1.8L (1997)
When the front brake line fails (when bleeding fluid from the brake line), the bypass line is opened to stop the proportioning valve so as to increase
effect of the rear brake.
DIFFERENTIAL SWITCH
When a failure occurs in either the front or rear brake line, the differential switch, detecting a pressure difference in the brake line, turns ON to
transmit the failure to the ABS control module. After the brake system is repaired, depressing the brake pedal will apply pressure to set the switch
automatically (at OFF position).
