Accelerator Switch & Vacuum Switches

ACCELERATOR SWITCH & VACUUM SWITCHES

Place one lead of your ohmmeter on pin 12. Start the engine and place the other lead of your ohmmeter to pin 7 then 14 and then 15. In each case you should show an open circuit. If you have continuity, the vacuum switches are defective. Now probe pin 6, it should also be open, if not the accelerator switch may be defective.

Do the checks again during a stall test. With the brake firmly applied and the selector in "D" range FULLY depress the accelerator. Pins 6, 7, 14 and 15 should now all have continuity. Pins 7,14, and 15 are for the vacuum switches and pin 6 is for the accelerator switch.

If ALL the tests have passed to this point, then the controller may be defective. Using these procedures should get you to the cause of the problem in the quickest manner. You will find that diagnosing the Chevy Sprint is actually a simple procedure.