Toyota T100 1996 Service Manual page 595

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.
Symptoms
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.
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
Only when 1. − 4. are all normal and the problem is still occurring, replace the
ABS ECU.
1. Check the DTC reconfirming that the normal code is output.
2. IG power source circuit.
3. Speed sensor circuit.
4. Check the ABS actuator with a checker.
If abnormal, check the hydraulic circuit for leakage (See page DI−xx).
Only when 1. − 4. are all normal and the problem is still occurring, replace the
ABS 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 checker.
If abnormal, check the hydraulic circuit for leakage (See page DI−362).
1. ABS warning light circuit.
2. ABS ECU.
Only when 1. and 2. are all normal and the problem is still occurring, replace the
ABS ECU.
1. ABS warning light circuit.
2. Tc terminal circuit.
1. Ts terminal circuit.
2. ABS ECU.
− ANTI−LOCK BRAKE SYSTEM
Inspection Circuit
DI−331
DI0ZZ−03
See page
DI−321
DI−347
DI−341
BR−58
DI−321
DI−341
BR−58
DI−354
DI−354
DI−358
DI−360