Cruise Control May use intake manifold vacuum to pull open the .

May use to open throttle.

Computer controlled

Needs driver input, vehicle speed input, and safety release features. Solenoids will add or remove engine vacuum to the throttle servo Driver InputVehicle Speed Input

Computer Control Safety Release Cruise Control

Looks at vehicle speed

Requires input from driver Set Resume Coast Cruise Control

Will be designed to release throttle if there is any malfunction ANY loss of power will release Vacuum Port Open all servo vacuum when OFF and turn OFF the Cruise Control

Computer grounds one solenoid to increase or decrease vehicle speed Vacuum Ports Closed when Off

Computer grounds one solenoid to increase or decrease vehicle speed Diagnose Cruise Control

Check input from / switch (very common fault on older )

Ensure good vacuum to control servo Check input from cruise control switch Check input from vehicle speed sensor Check voltage at cruise control servo Cruise Control Switch

Where is the cruise control switch located?

Steering Column

What is dangerous about removing the Horn Pad? Air Bags

Before you remove the you must disarm the air bag…. ….or you might get a very flat nose …. …………….or worse……...

Supplemental Restraint System

Must be disabled prior to removing the air bag module

Designed to fire after loss of battery power

DO NOT SAVE the memory if procedure says to remove a battery cable

Supplemental Restraint System

If deployed: Sodium Hydroxide powder is irritating to skin and lungs Clock spring connector likely needs replacing due to power surge

Clock-Spring Coil

Follow specific procedure for centering clock spring coil.

Some call for clockwise rotation

Others call for counter-clockwise rotation Clock-Spring Coil If clock-spring is removed it must be centered.

If steering linkage is removed …. ….remove the clock-spring… ….OR lock steering.

If Clock-Spring is not centered… …or allowed to Over-Rotate… . Clock-Spring will break and Air Bag lamp will Turn On