rear anti-lock brakes. components n rabs module n rabs valve n rabs speed sensor n rabs abs warning...
DESCRIPTION
RABS MODULE n Usually located inside vehicle. n Senses wheel speed other inputs n Controls RABS valve and warning light n Performs self- diagnostics n Single ChannelTRANSCRIPT
REAR ANTI-LOCKBRAKES
COMPONENTS
RABS Module RABS Valve RABS Speed Sensor RABS ABS Warning Light RABS Diagnostic Connector RABS Diode/Resistor Element RABS Sensor Test Connector
RABS MODULE Usually located inside
vehicle. Senses wheel speed
other inputs Controls RABS valve
and warning light Performs self-
diagnostics Single Channel
WHEEL SPEED SENSOR
Located in Rear Axle
Provides signal in form of AC Voltage
Direct input to Module
Excitor Ring and Sensor Pole Piece
LAB PAGE 159CLASS PAGE 163
WHEEL SENSOR
Voltage Generator Air Gap (.050) Magnetic Field
around the coil Exciter Ring
interrupts the magnetic field
Sensor Test Conn.
RABS VALVE
Two Solenoid Unit to open or close hydraulic circuits
Inlet/Isolation Valve Outlet/Dump Valve Built in accumulator
Page 191C
OPEN AND CLOSED ABSSYSTEMS
Description Page 181C
RABS DIAGNOSTIC CONNECTOR
Ford RAB systems have no diagnostic memorys for codes.
Usually single terminal connectors
Flashes Amber light Ground terminal to
activate self test
FLASHOUT CHART - L232
DIODE/RESISTOR
Located in main harness under dash
Isolates RAB module from parking brake switch
THE END