Problem Symptoms Table

WARNING: This page is about a different car, the 2002 Toyota Highlander. 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 OFF.

Problem Symptoms

Symptom/Suspect Area

Refer To

ABS Does Not Operate. ⁽¹⁾

Check The DTC Reconfirming That The Normal Code Is Output

IG Power Source Circuit

IG POWER SOURCE CIRCUIT

Speed Sensor Circuit

SPEED SENSOR CIRCUIT

Check The Brake Actuator With A TOYOTA Hand-Held Tester

⁽²⁾⁽³⁾

ABS Does Not Operate Efficiently ⁽¹⁾

Check The DTC Reconfirming That The Normal Code Is Output

Speed Sensor Circuit.

SPEED SENSOR CIRCUIT

Stop Light Switch Circuit

DTC C1249/49 STOP LIGHT SWITCH CIRCUIT

Check The Brake Actuator With A TOYOTA Hand-Held Tester

⁽²⁾⁽³⁾

ABS Warning Light Abnormality

ABS Warning Light Circuit

ABS WARNING LIGHT CIRCUIT (REMAINS ON)

ABS Warning Light Circuit

ABS WARNING LIGHT CIRCUIT (DOES NOT LIGHT UP)

Skid Control ECU

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

DTC Check Cannot Be Done ⁽¹⁾

ABS Warning Light Circuit

ABS WARNING LIGHT CIRCUIT (REMAINS ON)

ABS Warning Light Circuit

ABS WARNING LIGHT CIRCUIT (DOES NOT LIGHT UP)

Tc Terminal Circuit

Tc TERMINAL CIRCUIT

Speed Sensor Signal Check Cannot Be Done.

Ts Terminal Circuit

Ts TERMINAL CIRCUIT

Skid Control ECU

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

⁽¹⁾	When the followings are all normal and the problem is still occuring, replace the Skid Control ECU.

⁽²⁾	See ABS TRACTION ACTUATOR ASSY. article.

⁽³⁾	If fluid leaks are found, repair as necessary.