Lexus IS250 IS220d GSE20 ALE20 - BRAKE CONTROL
VEHICLE STABILITY CONTROL SYSTEM (w/o VDIM) - DIAGNOSIS SYSTEM
| DIAGNOSIS |
If the skid control ECU detects a malfunction, the ABS warning, BRAKE warning, master caution indicator, and SLIP indicator lights will come on and the multi information display shows warning messages, in order to warn the driver.
The table below indicates which lights will come on when there is a malfunction in a particular function.
| Item / Trouble Area | ABS | EBD | BA | TRC | VSC |
| ABS warning light | ○ | ○ | ○ | - | - |
| BRAKE warning light | - | ○ | - | - | - |
| VSC warning (multi information display and master caution indicator light) light | ○ | ○ | ○ | ○ | ○ |
| SLIP indicator light | ○ | ○ | ○ | ○ | ○ |
○: Light ON
-: Light OFF
The DTC can be read by connecting the intelligent tester and observing the blinking pattern of the ABS warning light or by reading the multi information display.
| WARNING LIGHT AND INDICATOR LIGHT CHECK |
Release the parking brake.
- NOTICE:
- When releasing the parking brake, set chocks to hold the vehicle for safety.
- HINT:
- When the parking brake is applied or the level of the brake fluid is low, the BRAKE warning light comes on.
When the engine switch is turned on (IG). Check that the ABS warning, BRAKE warning, master caution indicator, and SLIP indicator lights come on for approximately 3 seconds. Make sure that the message on the multi information display changes from "CHECK" to "COMPLETE" for 2 seconds.
- HINT:
- If the warning light and indicator light check result is not normal, proceed to troubleshooting for the ABS, BRAKE and VSC warning light circuits and SLIP indicator light circuit.
If the indicator remains on, proceed to troubleshooting for the light circuit below.
| Trouble Area | See procedure |
| ABS warning light circuit | |
| BRAKE warning light circuit | |
| VSC warning light circuit | |
| SLIP indicator light circuit |