Speed Sensor And Sensor Rotor Serrations (Reference) - Toyota Hilux Surf 1993 Owner's Manual

BR–98
BRAKE SYSTEM – Rear–Wheel Anti–Lock Brake System
INSPECTION OF SPEED SENSOR AND
SENSOR ROTOR SERRATIONS
(REFERENCE)
INSPECT SPEED SENSOR AND SENSOR ROTOR SERRA–
TIONS BY USING AN OSCILLOSCOPE
(a) Remove the glove box assembly and disconnect the
radio speaker connector.
(b) Disconnect the connector from the rear–wheel anti–
lock brake system ECU.
(c) Connect an oscilloscope to the terminals RR + and
RR – on the wire harness side connector.
(d) Run the vehicle at 20 km/h 0 2.4 mph), and inspect
speed sensor output wave.
(e) Check that C is 0.4 V or more.
If it is not as specified, replace the speed sensor.
M Check that B is 70% or more of A.
If it is not as specified, replace the sensor rotor.
(g) Remove the oscilloscope and connect the connector
to the ECU.
(h) Connect the radio speaker connector and install the
glove box assembly.