ABS Actuator

ON-VEHICLE INSPECTION

HINT: Using the ABS actuator checker (SST), check the operation of the actuator. If the actuator does not operate, refer to "Antilock Brake System; Testing and Inspection; Trouble Code Diagnostic Procedures 11,12,13 and 14", and check the operation of sub-wire harness G according to the instructions. If the solenoid and/or pump motor relay are abnormal, replace the relay and inspect the actuator operation again.

1. INSPECT BATTERY POSITIVE VOLTAGE
Battery positive voltage: 10 - 14 V
2. DISCONNECT ENGINE COOLANT RESERVOIR
Slide the engine coolant reservoir upward and remove it from the bracket.





3. DISCONNECT CONNECTORS
Disconnect the 2 connectors from the ABS actuator assembly.





4. CONNECT ACTUATOR CHECKER (SST)
a. Connect the actuator checker (SST) to the actuator side wire harness via the sub-wire harness (SST), as shown.
SST 09990-00150, 09990-00250, 09990-00300, 09990-00360
b. Connect the red cable of the checker to the battery positive (+) terminal and black cable to the negative (-) terminal. Connect the black cable of the sub-wire harness to the battery negative (-) terminal or body ground.
c. Place the "SHEET P" (SST) on the actuator checker.
SST 09990-00430
5. INSPECT BRAKE ACTUATOR OPERATION
a. Start the engine, and run it at idle.





b. Turn the selector switch of the actuator checker to "FRONT LH" position.
c. Push and hold in the MOTOR switch for a few seconds.





d. Depress the brake pedal and hold it until step (g) is completed.
e. Push the MAIN push switch, and check that the brake pedal does not go down.

NOTICE: Do not keep the MAIN push switch pushed down for more than 10 seconds.

f. Release the switch, and check that the pedal goes down.





g. Push and hold in the MOTOR switch for a few seconds, and check that the pedal returns.
h. Release the brake pedal.





i. Push and hold in the MOTOR switch for a few seconds.
j. Depress the brake pedal and hold it for about 15 seconds. As you hold the pedal down, push the MOTOR switch for a few seconds. Check that the brake pedal does not pulsate.
k. Release the brake pedal.
l. Turn the selector switch to "REAR RH" position.
m. Repeat (c) to (j), checking the actuator operation similarly.





n. Similarly, inspect "REAR LH" and "FRONT RH" position.

HINT: When inspecting "FRONT RH" position, push the FRONT RH switch instead of the MAIN push switch, and you can inspect in any selector switch position.





o. Push and hold in the MOTOR switch for a few seconds.
p. Stop the engine.
6. DISCONNECT ACTUATOR CHECKER (SST) FROM ACTUATOR
Remove the "SHEET P" (SST) and disconnect the actuator checker (SST) and sub-wire harness (SST) from the actuator.
SST 09990-00150, 09990-00250, 09990-00300, 09990-00360, 09990-00430
7. CONNECT CONNECTORS
Connect the 2 connectors to the ABS actuator assembly.
8. CLEAR DTC: (See: Antilock Brake System; Testing and Inspection; How to Clear Diagnostic Trouble Codes).