Abs Does Not Operate Efficiently

Verify that only normal DTC exists. SEE RETRIEVING DTCS  under SELF-DIAGNOSTICS. Check speed sensor circuit. See SPEED SENSOR DIAGNOSTICS  under SELF-DIAGNOSTICS. Check stoplight circuit. See STOPLIGHT SWITCH under COMPONENT TESTS  and appropriate wiring diagram under WIRING DIAGRAMS . Check ABS actuator. See ACTUATOR CHECK under COMPONENT TESTS . If no problems are found, check ECU. See PIN VOLTAGE.