Ground Circuits
WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, 2003 Subaru Impreza, 2003 Subaru Forester, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition off. Using ohmmeter connected to ground, backprobe each ECM ground terminal. For ECM ground terminal identification, see appropriate pin voltage chart in PIN VOLTAGE CHARTS article. Resistance should be zero ohms. If resistance is not close to zero ohms, repair open to ground.
- Start engine. Using voltmeter connected to ground, backprobe each ground terminal. Voltage should be less than one volt. If voltage is more than one volt, check for open, corrosion, or loose connection on ground lead.