Cruise Control Switch: Testing and Inspection

Before proceeding with electrical tests on, ensure all test equipment such as test lights and voltmeters are in good working order, inspect cruise control fuse and replace as necessary, inspect all vacuum hoses for leaks and check for adequate system vacuum.

1. Disconnect turn lever engage switch from harness.
2. Using ohmmeter, test turn lever engage switch as follows:
a. Place engage switch in released position. There should be no continuity between any two terminals.
b. Depress engage switch slide. There should be continuity only between yellow and green wire terminals.
c. Depress engage switch push button. There should be continuity only between green and red wire terminals.
3. If results are not correct in steps a, b or c, replace engagement switch and harness.
4. Connect one lead of ohmmeter to steering column mounting bracket and check each terminal. If any terminal indicates continuity, replace lever and harness.