TECHNICAL DESCRIPTION (COMMENT)
The cause depends on driving and road surface conditions, so diagnosis may be difficult. However, if no diagnosis code is displayed, carry out the following inspection.TROUBLESHOOTING HINTS (The most likely causes for this case:)
- Malfunction of the hydraulic unit
DIAGNOSIS
Check the hydraulic unit. (Refer to 
.) If the hydraulic unit (integrated with ABS-ECU) is malfunctioning, replace it. Then check that the malfunction symptom is eliminated.