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
- Turn ignition off. Connect negative lead of ohmmeter to ground. Using positive lead, backprobe ECU terminals No. 5 and No. 17 (Black wires). Resistance should be zero ohms. If not, repair open wire to ground.
- Connect negative lead of DVOM to a good ground. Using positive lead, backprobe ECU terminals No. 5 and No. 17 (Black wires). With engine running, DVOM should indicate less than one volt. If higher than one volt, check for opens, corrosion, or loose connection on ground leads.