Toyota AVENSIS 2000 Supplement Manual page 312

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 ABS & BA & TRC & VSC ECU, sensor, etc., turn the IG switch OFF.
ABS does not operate
ABS does not operate efficiently
ABS warning light abnormal
DTC check cannot be done
Speed sensor signal check cannot be done
VSC does not operate
BA does not operate
SLIP indicator light abnormal
BRAKE warning light abnormal
VSC OFF indicator light abnormal
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
Symptom
– ABS WITH EBD & BA & TRC & VSC SYSTEM
Suspect Area
Only when 1. – 4. are all normal and the problem is still
occurring, replace the ABS & BA & TRC & VSC ECU.
1. Check the DTC, reconfirming that the normal code is
output.
2. IG power source circuit
3. Speed sensor circuit
4. Check the brake actuator with a hand–held tester.
If abnormal, check the hydraulic circuit for leakage.
Only when 1. – 4. are all normal and the problem is still
occurring, replace the ABS & BA & TRC & VSC ECU.
1. Check the DTC, reconfirming that the normal code is
output.
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the brake actuator with a hand–held tester.
If abnormal, check the hydraulic circuit for leakage.
1. ABS warning light circuit
2. ABS & BA & TRC & VSC ECU
Only when 1. – 3. are all normal and the problem is still
occurring, replace the ABS & BA & TRC & VSC ECU.
1. ABS warning light circuit
2. VSC warning light circuit
3. Tc terminal circuit
1. Ts terminal circuit
2. ABS & BA & TRC & VSC ECU
Only when circuits inspected for each problem symptom
are all normal and the problem is still occurring, replace the
ABS & BA & TRC & VSC ECU.
1. Check the DTC, reconfirming that the normal code is
output.
2. IG power source circuit
3. Hydraulic circuit for leakage
4. Speed sensor circuit
Stop light switch circuit
SLIP indicator light circuit
1. BRAKE warning light circuit
2. ABS & BA & TRC & VSC ECU
Only when circuits inspected for each problem symptom
are all normal and the problem is still occurring, replace the
ABS & BA & TRC & VSC ECU.
1. VSC OFF indicator light circuit
2. VSC OFF switch circuit
DI–181
DI7ZH–01
See page
DI–171
DI–208
DI–182
DI–182
DI–171
DI–182
DI–215
DI–215
DI–231
DI–231
DI–233
DI–250
DI–252
DI–171
DI–208
DI–254
DI–182
DI–215
DI–240
DI–236
DI–243
DI–243