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Problem Symptoms Table

WARNING: This page is about a different car, the 2002 Toyota Avalon. 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 PROBLEM SYMPTOMS  table and proceed to the relevant troubleshooting procedure.

NOTE: When replacing ABS & BA & TRAC & VSC ECU, sensor, etc., turn the IG switch OFF.
PROBLEM SYMPTOMS

Symptom/Suspect Area Refer To
ABS Does Not Operate (1)
Check DTC, Reconfirming That Normal Code Is Output STEP B - IN CASE OF NOT USING HAND-HELD TESTER, CHECK THE DTC OF ABS & BA & TRAC & VSC ECU  Or STEP D - IN CASE OF USING HAND-HELD TESTER, CHECK THE DTC 
IG Power Source Circuit DTC C1241/41 IG POWER SOURCE CIRCUIT 
Speed Sensor Circuit DTC C0200/31-C1331/36 & C1332/38, C1333/39 - SPEED SENSOR CIRCUIT 
Check Hydraulic Circuit For Leakage See CHECK FOR FLUID LEAKAGE 
ABS Does Not Operate Efficiently (1)
Check DTC, Reconfirming That Normal Code Is Output STEP B - IN CASE OF NOT USING HAND-HELD TESTER, CHECK THE DTC OF ABS & BA & TRAC & VSC ECU.  Or STEP D - IN CASE OF USING HAND-HELD TESTER, CHECK THE DTC 
Speed Sensor Circuit DTC C0200/31-C1331/36 & C1332/38, C1333/39 - SPEED SENSOR CIRCUIT 
Stop Light Switch Circuit DTC C1249/58 STOP LIGHT SWITCH CIRCUIT 
Check Hydraulic Circuit For Leakage See CHECK FOR FLUID LEAKAGE 
ABS Warning Light Abnormal
ABS WARNING LIGHT ABS WARNING LIGHT CIRCUIT 
ABS ECU ELECTRONIC CIRCUIT INSPECTION PROCEDURE
DTC Check Cannot Be Done (1)
ABS Warning Light Circuit ABS WARNING LIGHT CIRCUIT 
VSC Warning Light Circuit VSC WARNING LIGHT CIRCUIT 
Tc Terminal Circuit TC TERMINAL CIRCUIT 
Speed Sensor Signal Check Cannot Be Done
Ts Terminal Circuit TS TERMINAL CIRCUIT 
ABS ECU ELECTRONIC CIRCUIT INSPECTION PROCEDURE
VSC Does Not Operate (1)
Check DTC, Reconfirming That Normal Code Is Output STEP B - IN CASE OF NOT USING HAND-HELD TESTER, CHECK THE DTC OF ABS & BA & TRAC & VSC ECU  Or STEP D - IN CASE OF USING HAND-HELD TESTER, CHECK THE DTC 
IG Power Source Circuit DTC C1241/41 IG POWER SOURCE CIRCUIT 
Hydraulic Circuit For Leakage. CHECK FOR FLUID LEAKAGE 
Speed Sensor Circuit DTC C0200/31-C1331/36 & C1332/38, C1333/39 - SPEED SENSOR CIRCUIT 
BA Does Not Operate
Stop Light Switch Circuit DTC C1249/58 STOP LIGHT SWITCH CIRCUIT 
SLIP Indicator Light Abnormal
Slip Indicator Light Circuit SLIP INDICATOR LIGHT CIRCUIT 
BRAKE Warning Light Abnormal
BRAKE Warning Light Circuit BRAKE WARNING LIGHT CIRCUIT 
ABS ECU ELECTRONIC CIRCUIT INSPECTION PROCEDURE
VSC Off Indicator Light Abnormal (1)
VSC OFF Indicator Light Circuit VSC OFF INDICATOR LIGHT, VSC OFF SWITCH CIRCUIT 
VSC OFF Switch Circuit VSC OFF INDICATOR LIGHT, VSC OFF SWITCH CIRCUIT 
(1) Only when all sympton areas are normal and the problem is still occurring, replace the ABS & BA & TRAC & VSC ECU
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