From VIN S5220000

Cruise Control-Cruise Control Unit:

Circuit Testing-Cruise Control Unit:

1. Connect the negative lead of a voltmeter to a chassis ground or to pin 4 (BLK) of C228. Connect the positive lead to one of the terminals that has a voltage value listed with it: - 1,2,5,6,9,10,11,13,14,15 and 16.
2. Turn ignition switch and/or cruise control main switch to the position indicated under Procedure.
3. If the voltage measured is not in agreement with the voltage listed in the table, and the table lists the terminal as an output, then consider the cruise control unit to be defective. If the terminal is listed as an input, then refer to other circuit tests that cover the component to which that terminal is connected.