Idle Up Control Valve: Testing and Inspection

Fig. 041 - Chart C-2B Idle Speed Solenoid Throttle Kicker.:

CHART C-2B, IDLE SPEED SOLENOID

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.



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.