Ground Circuits

Using an ohmmeter, check for continuity to ground on ECU terminal 14. Resistance should be zero ohms. If reading is other than zero ohms , repair open to ground. Using a DVOM, touch negative lead of voltmeter to a good ground. Touch positive lead of voltmeter to ground terminal. With vehicle running, voltmeter should indicate less than 1 volt. If voltmeter reading is greater than 1 volt, check for open, corrosion or loose connection on ground lead.