System Testing
- To test cruise control unit, fix rear wheels and jack up and support front end. Turn ignition on. Connect negative voltmeter probe to terminal M and positive to D through N. Start engine and turn main switch on. Increase vehicle speed to about 30 MPH and push "SET" button. Check the A, B and C terminals by connecting negative voltmeter probe to terminal M and positive to A, B and C. See Fig 1 .
- Terminal F should always read 12 volts. Terminals I, J and K should read approximately 12 volts, except when turning "SET" switch (terminal I), "COAST" switch (terminal J) or "RESUME" switch (terminal K) to arrow direction. In this situation, voltage should drop to 0 and return to 12 volts when switch is released.
- Terminal E should read 12 volts when depressing clutch or brake pedal. Terminal N should read 12 volts only when depressing brake pedal. Terminal D (automatic transmission only) should read 12 volts except during shifting to "P" or "N", when voltage should be 0.
- Terminal B should read 12 volts except when "SET" button is pushed, when it should be 0. Terminal A should respond the same way when "COAST" is turned to arrow direction. Terminal C should respond the same way when clutch pedal is depressed.
- To test terminal H, stop engine and remove speedometer cable from transaxle. Turn ignition on. Rotate inner cable by hand. Voltage should fluctuate between 0 and 12.