When the electronically controlled brake system is operating, as the input piston and output piston are not directly connected, the kickback of the brake pedal is minimal during ABS operation and the driver may not notice that ABS operated.
Check if the slip indicator light was illuminated or blinking when ABS did not operate.
When the VSC system is normal and ABS is operating, the slip indicator light blinks.
When the VSC system is malfunctioning, the slip indicator light illuminates.
| Result | Proceed to |
|---|---|
| The slip indicator light was blinking. | A |
| The slip indicator light was illuminated. | B |
A
B
Using the GTS, check DTCs and Freeze Frame Data.
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
A
B
Check that ABS operates using a drum tester or equivalent.
When using a drum tester, enter Inspection Mode or VSC off mode and perform inspection with the TRC and VSC systems disabled to prevent the vehicle from moving suddenly due to TRC or VSC operation.
ABS operates.
| Proceed to |
|---|
| OK |
| NG |
OK
NG