Idle Speed/Throttle Actuator - Mechanical: Testing and Inspection

Chart C-2B - Idle Speed Solenoid "Throttle Kicker":

Wiring Diagram for Chart C-2B - Idle Speed Solenoid:

CHART C-2B - IDLE SPEED SOLENOID


Circuit Description:

Idle speed solenoid is used to increase throttle opening during certain deceleration modes and when the A/C is "ON". The solenoid is controlled by a relay which has two sets of contacts. Control of the relay is by the ECM which completes a ground to energize the solenoid. When energized, idle is increased only if A/C is "ON". When de-energized throttle opening is increased regardless of A/C position.


Test Description:

1. Checks for normal operation of solenoid. With key "ON" engine not running solenoid plunger should extend.


2. Checks for normal solenoid plunger retraction if "test" terminal is grounded.