Fast Idle & Idle-Up Control Device (JUSTY)

Using a hand vacuum pump, check to see if control device, located at top center of firewall, will hold vacuum. On models equipped with A/C, idle speed should increase when A/C is turned on. On models without A/C, idle speed should increase when headlights, rear defogger, or heater blower is turned on. See Fig 1.

Fig 1: Fast Idle Control Device (FICD) Control Actuator

Courtesy of SUBARU OF AMERICA, INC.