[Previous][Next]
TROUBLE SYMPTOM CHART
caution
  • ABS may operate in the following conditions without hard braking: Low mu road surface, high-speed turn, and bumpy road surface. When asking the customers, confirm that they have/have not encountered ABS operation in corresponding conditions.
  • During ABS operation, the brake pedal is pulled forward gradually, and the noise occurs at the same time. This is because the brake line pressure varies intermittently to prevent the wheel lock, and not a system malfunction.
  • During diagnosis, a DTC associated with other system may be set when the ignition switch is turned on with connector(s) disconnected. On completion, confirm all systems for DTC(s). If DTC(s) are set, erase them all.
Trouble symptomInspection procedure numberReference page
Scan tool (M.U.T.-IIISE) cannot communicate with the ABS/ASC system is impossible.Scan tool (M.U.T.-IIISE) cannot communicate with all systems.-Refer to GROUP 54C - Troubleshooting .
ASC-ECU power supply circuit system.1
ASC OFF light flashes at a rate of 2Hz.2
The brake warning light does not go out (ABS warning light is OFF) although the parking brake is released.3
ABS warning light does not illuminate when ignition switch is turned to the ON.4
Brake warning light does not illuminate when the ignition switch is turned to ON.5
ABS warning light stays ON after the ignition switch turned to ON.6
ASC warning light stays ON after the turn the ignition switch to ON.7
ASC OFF light stays ON after the ignition switch turned to ON.8
The stability control/TCL system cannot be disabled when ASC OFF switch is pressed for 3 seconds or more to turn the system OFF.9
Abnormality in brake operation.10
Stability control/TCL does not operate.11
ABS/stability control/TCL operates too frequently.12
HSA (Hill Start Assist) does not work.13
The initial check sound of hydraulic unit is loud14