Abs Does Not Operate

Using ANTI-LOCK light diagnostics, ensure a normal code is output. See ANTI-LOCK LIGHT DIAGNOSTICS under DIAGNOSIS & TESTING. Check IG power source circuit. See CODE 41 IGNITION (IG) POWER SOURCE CIRCUIT charts under DIAGNOSTIC CHARTS. Check speed sensor circuit. See CODES 31, 32, 33, 34, 35 & 36 SPEED SENSOR CIRCUIT charts under DIAGNOSTIC CHARTS. Check ABS actuator. See appropriate ACTUATOR CHECK under DIAGNOSIS & TESTING. If ABS actuator is okay, check hydraulic system for leaks. If above items are okay, replace ABS ECU.