Toyota Celica 2005 Repair Manual page 1048

PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
NOTICE:
When replacing Skid Control ECU, sensor or etc., turn the IG switch OFF.
ABS does not operate
ABS does not operate efficiently
ABS warning light abnormal
BRAKE warning light abnormal
DTC check cannot be done
Speed sensor signal check cannot be done
2005 CELICA (RM1131U)
DIAGNOSTICS
Symptom
− ANTI−LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
Suspect Area
Only when 1. to 4. are all normal and the problem is still
occurring, replace the Skid Control ECU.
3. Check the DTC reconfirming that the normal code is
output.
4. IG power source circuit
5. Speed sensor circuit
6. Check the ABS actuator with a TOYOTA hand−held
tester.
If abnormal, check the hydraulic circuit for leakage
(See page DI−881).
Only when 1. to 4. are all normal and the problem is still
occurring, replace the Skid Control ECU.
1. Check the DTC reconfirming that the normal code is
output.
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the ABS actuator with a TOYOTA hand−held
tester.
If abnormal, check the hydraulic circuit for leakage
(See page DI−881).
1. ABS warning light circuit
2. Skid Control ECU
1. BRAKE warning light circuit
2. Skid Control ECU
Only when 1. and 2. are all normal and the problem is still
occurring, replace the Skid Control ECU.
1. ABS warning light circuit
2. Tc terminal circuit
1. Ts terminal circuit
2. Skid Control ECU
1047
DI−847
DI6MD−05
See page
DI−836
DI−863
DI−848
BR−48
DI−836
DI−848
DI−866
BR−48
DI−872
DI−875
DI−872
DI−877
DI−879