Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Toyota MR2. However, it is still accessible from the selected car via links, so may be relevant.

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.

NOTE: When replacing skid control ECU, sensor or etc., turn the IG switch OFF.

PROBLEM SYMPTOMS TABLE - ANTI-LOCK BRAKE SYSTEM

Symptom	Suspected Area
ABS does not operate	Only when 1. to 4. are all normal and the problem is still occurring, replace the skid control ECU. 17. Check the DTC reconfirming that the normal code is output. 18. IG power source circuit 19. Speed sensor circuit 20. Check the ABS actuator with a checker or hand-held tester. If abnormal, check the hydraulic circuit for leakage.
ABS does not operate efficiently	Only when 1. to 4. are all normal and the problem is still occurring, replace the skid control ECU. Check the DTC reconfirming that the normal code is output. Speed sensor circuit Stop light switch circuit Check the ABS actuator with a checker or hand-held tester. If abnormal, check the hydraulic circuit for leakage.
ABS warning light is abnormal	ABS warning light circuit Skid control ECU
DTC check cannot be performed	Only when 1. and 2. are all normal and the problem is still occurring, replace the skid control ECU. ABS warning light circuit Tc terminal circuit
Speed sensor signal check cannot be performed	Ts terminal circuit Skid control ECU