K 30 P/U 4WD V6-262 4.3L (1985)
Wiring Diagram for Chart C-2W - Idle Speed Control Check "Throttle Kicker"
CHART C-2W - IDLE SPEED CONTROL CHECK "THROTTLE KICKER"
Circuit Description:
The throttle lever actuator is manifold vacuum operated and extends under the following conditions:
^
Coolant temperature below 85~C (185~F).
^
For 30 seconds after starting engine, if coolant temperature is above 85~C (185~F).
^
If power steering equipped, full steering turn will close switch and energize the solenoid.
Test Description:
1.
This checks the ECM operation of the throttle kicker and determines if there is an open or grounded circuit.
2.
This checks the power steering switch circuit to determine if the switch is working properly or if this is an open circuit. Since the engine is loaded
down by an extreme turn, the solenoid is energized to increase idle to compensate the load.
3.
Checks for an open ignition circuit to the solenoid.
4.
Checks for manifold vacuum to the throttle kicker or faulty kicker as reason for an inoperative kicker.
5.
Checks solenoid and ground circuit to the solenoid.
