Mode F5: Actuator Test

MODE F5: ACTUATOR TEST
This mode is used to exercise the ABS system actuators and make sure they operate normally. Prior to the test, pay attention to the cautions below. (When checking the solenoid valve system, be sure to jack up the vehicle.)

CAUTION:
- Before testing, be sure that the brakes work normally.
- Make sure that the battery is fully charged.
Conduct the test by two persons (A TECH 1 operator and a vehicle checker).
- Be sure to start ACTUATOR test with the engine stopped.
- Before testing, make sure that electrical trouble, if any, has been completely repaired. Conducting tests of ABS actuator with electrical circuit problem remaining uncorrected could damage the control unit.






(1): Pump Motor Relay Test




The pump motor operates when current flows through the pump motor relay coil.

Confirm the operation of the pump motor by its operating sound in the engine compartment.





BRAKE SYSTEM TEST {(2), (3), and (4)}




When conducting these tests, jack up the vehicle. Be sure to confirm that the brakes work normally.
Place transmission in Neutral.

CAUTION: When testing the valves successively, leave time intervals of 10 min. or more between tests so as to protect the valves.
The operating conditions of solenoid valve and resulting brake effect change during the test:
Test Steps
1) Confirmation of no brake effect (Can the wheel(s) be turned by hand when the brake pedal is released?).
2) Confirmation of brake effect (Can the wheel(s) be locked when the brake pedal is depressed?)
3) Brake oil pressure is reduced and held at that level.
4) Can the wheel(s) be turned by hand?
5) Solenoid valve is released so that brake pedal pressure reaches brake. Is the wheel(s) locked?

(2): Front Left Wheel Brake System Test









(3): Front Right Wheel Brake System Test









(4): Rear Wheel Brake System Test









(5): ABS Warning Light Test
In this test, light is actuated to make sure of its function.