2500 4x4 Pickup L6-359 5.9L DSL Turbo (1995)
Brake Warning Indicator: Description and Operation
Brake Warning Lamp Switch
All Wheel
Circuit G9 provides an input to the ABS control module. The module receives the input when either the ignition switch is in the START position, the
park brake switch closes, or the brake warning lamp switch in the hydraulic combination valve closes.
Rear Wheel
Circuit G9 from provides an input to the Rear Wheel Anti-Lock (RWAL) control module. The module receives the input when either the ignition switch
is in the START position, or the park brake warning lamp switch in the hydraulic combination valve closes.
