October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Ground Circuits
- Using an ohmmeter, check for continuity to ground by backprobing MCU terminals No. 17, 20 and 60. See Figure
. Resistance should be zero ohms. If not, repair open to ground.
- Using a DVOM, touch negative lead of voltmeter to a good ground. Using positive lead of voltmeter backprobe each 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.