DTC 507 (ISC_H) - Idle Control System Rpm Higher Than Expected

NOTE: Refer to illustration for connector and terminal identification. See Figure -Figure .

Perform tests and repairs for DTC P0505 .
Turn ignition to ON. Start engine and allow to idle. Check intake manifold, idle air control solenoid valve and throttle body for loose installation and gasket for cracks, by-pass hose for loose connection or cracking and vacuum hoses for disconnection or cracking. Repair as necessary. If no damage is noted, replace idle air control solenoid valve.