Toyota Celica 2005 Repair Manual page 1054

5 Check speed sensor and sensor rotor serrations.
Normal Signal Waveform
2 m/s / Division
1 V / Division
NG
6 Check sensor rotor and sensor tip.
2005 CELICA (RM1131U)
DIAGNOSTICS − ANTI−LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
REFERENCE: INSPECTION USING OSCILLOSCOPE
PREPARATION:
(a) Disconnect the Skid Control ECU connector.
(b) Connect the oscilloscope to the terminal FR+ − FR−, FL+
− FL−, RR+ − RR− and RL+ − RL− of the Skid Control ECU
GND
harness side connector.
CHECK:
Drive the vehicle with about 30 km/h (19 mph), and check the
signal waveform.
W04200
OK Check and replace Skid Control ECU
(ABS Actuator Assembly). (See page IN−30)
Front:
PREPARATION:
Remove the front drive shaft (See page SA−21).
CHECK:
Check the sensor rotor serrations.
OK:
No scratches or missing teeth or foreign objects.
PREPARATION:
Remove the front speed sensor (See page BR−54).
R00948
CHECK:
Check the sensor tip.
OK:
No scratches or foreign objects on the sensor tip.
1053
DI−853