Vehicle Stability Control System (W/O Vdim) Problem Symptoms Table

Brake. Lexus Is250, Is220D. Gse20 Ale20
Brake Control. Lexus Is250, Is220D. Gse20 Ale20

Vehicle Stability Control System (W/O Vdim) -- Problem Symptoms Table


If there are no DTCs output and 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.
HINT:
  1. Inspect the fuse and relay before investigating the suspected areas as shown in the table below.
  2. Inspect each malfunction circuit in numerical order for the corresponding symptom.

Vehicle Stability Control System:
Symptom
Suspected Area
See page
ABS, BA and/or EBD does not operate
1. Check the DTC again and make sure that the normal system code is output.
Click here
2. IG power source circuit
Click here
3. Front speed sensor circuit
Click here
4. Rear speed sensor circuit
Click here
5. Check the brake actuator assembly with the intelligent tester. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leakage.
Click here
6. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).
Click here
ABS, BA and/or EBD does not operate efficiently
1. Check the DTC again and make sure that the normal system code is output.
Click here
2. Front speed sensor circuit
Click here
3. Rear speed sensor circuit
Click here
4. Stop light switch circuit
Click here
5. Check the brake actuator assembly with the intelligent tester. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leakage.
Click here
6. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).
Click here
ABS sensor DTC check cannot be done
1. Check the DTC again and make sure that the normal system code is output.
Click here
2. TC and CG terminal circuit
Click here
3. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).
Click here
ABS warning light abnormal (Remains on)
1. ABS warning light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
ABS warning light abnormal (Does not come on)
1. ABS warning light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
BRAKE warning light abnormal (Remains on)
1. BRAKE warning light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
BRAKE warning light abnormal (Does not come on)
1. BRAKE warning light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
VSC and/or TRC does not operate
1. Check the DTC again and make sure that the normal system code is output.
Click here
2. IG power source circuit
Click here
3. Check the hydraulic circuit for leakage
-
4. Front speed sensor circuit
Click here
5. Rear speed sensor circuit
Click here
6. Yaw rate and acceleration sensor circuit
Click here
7. Steering angle sensor circuit
Click here
8. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).
Click here
VSC sensor DTC check cannot be done
1. Check the DTC again and make sure that the normal system code is output.
Click here
2. TC and CG terminal circuit
Click here
3. If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU).
Click here
VSC warning (multi information display and master caution indicator light) light abnormal (Remains on)
1. VSC warning light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
VSC warning (multi information display and master caution indicator light) light abnormal (Does not come on)
1. VSC warning light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
SLIP indicator light abnormal (Remains on)
1. SLIP indicator light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
SLIP indicator light abnormal (Does not come on)
1. SLIP indicator light circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
Sensor check cannot be done
1. TS and CG terminal circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here
Skid control buzzer abnormal
1. Skid control buzzer circuit
Click here
2. Brake actuator assembly (Skid control ECU)
Click here