Toyota ZZT230 series Repair Manual page 495

0�284
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.
When repl a ci n g
NOTICE:
ABS ECU,
Symptom
ASS does not operate
ABS does not operate eff i Ciently
ABS waming light abnormal
BRAKE warning light abnormal
ore be
check cannot done
ched<
Speed sensor signal cannot
DIAONOSTICS
sensor or etc. , turn the
Only when 1 . to 4. are all normal and the problem is still
occ u ning, replace the ASS ECU.
1 . Check the OTC reconllrmlng that the normal coc:le is
2.
3. Speed s&nsor circuit
4. Check the ASS actuator with a checker or TOYOTA
Only when 1 . to 4. are all normal and the problem
occ u rring, replace the ABS ECU.
1 . Check the DTC reconfirming that the normal code is
2. Speed sensor circuit
3. S1op tight switch circuit
4. Check the ABS actuator with a checker or TOYOTA
1 . ABS wamlng light circuit
2. ABS ECU
1. BRAKE warning light circuit
2. ABSECU
Only when
occ u rring, replace the ABS ECU.
1 . ABS warning �ght circuit
2. Tc terminal circuit
1 . Ts terminal circuit
be
done
2. ABS ECU
- ANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE OJSTAIBUJION IEBDl
swi t ch
OFF.
IG
Suspect Area
IG
output.
power source circuli
hand-held tesler.
If abnonnal, check the hydrau6c clrcuft for leakage
{See page 01-323).
output.
hancHield tester.
If abnormal, check the hydraulic circuit for leakage
(See page Dl-323).
1.
and 2. are a11 normal and the problem is still
-·
See page
01-276
01-005
01-285
BR-48
is
still
Dl-276
Dl-285
DI...J O S
BR-48
Dl-314
Dl-317
01-314
Dl-319
Dh'l21