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Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Toyota Corolla. 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 page.

NOTE: When replacing Skid Control ECU, sensor or etc., turn the ignition switch to OFF.
PROBLEM SYMPTOMS TABLE - ANTI-LOCK BRAKE SYSTEM WITH EBD

Symptom Suspect Area
ABS does not operate When the followings 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. 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.
ABS does not operate efficiently When the following 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 brake actuator with a hand-held tester.

If abnormal, check the hydraulic circuit for leakage.
ABS warning light abnormality
  1. ABS warning light circuit
  2. Skid control ECU
DTC check cannot be done When the following 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
Speed sensor signal check cannot be done
  1. Ts terminal circuit
  2. Skid control ECU
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