Motor Test (F4)

PROCEDURE
Once the motor pack has been separated from the Antilock Brake System (ABS) actuator (hydraulic modulator), this test will help to determine if the motor pack is operating properly. The TECH-1 will rotate the motors in one direction, then the other.
^ If any motor does not turn in both directions, the motor pack is malfunctioning and must be replaced. The motor pack is not serviceable and must be replaced as an assembly.
^ If all three motors rotate, try to rotate each gear on the ABS actuator, refer to "No Gear Movement" below.

NO GEAR MOVEMENT
After the motor pack has been removed, rotate each gear by hand on the ABS actuator unit with large gears). The front gears (non-center gears) should be able to be rotated approximately five full turns lock to lock. If the gear does not turn freely or at least five turns are not possible, replace the ABS actuator.