Check AST Circuit

Unplug connectors from control relay, actuator and ABS ECU. Check the following items. If each item is okay, check ABS solenoid relay:

• Check for continuity in White wire between control relay terminal A5 and actuator terminal A2. See Figure and Figure . If there is no continuity, repair White wire.
• Check resistance between actuator terminals B4 and A2. See Figure. If resistance is not 4-6 ohms, replace actuator.
• Check for continuity in Red wire between actuator terminal A2 and ABS ECU terminal A18. See Figure and Figure . If there is no continuity, repair circuit.