Ground Circuits
WARNING: This page is about a different car, the 1994 Mazda Navajo and 1994 Mazda B4000. However, it is still accessible from the selected car via links, so may be relevant.
- Locate Powertrain Control Module (PCM) behind right kick panel. Using a DVOM, check for continuity to ground on PCM terminals No. 40 and 60. See Figure . Reading on DVOM should be zero ohms. If reading is not zero ohms, repair open to ground.
- Using a voltmeter, touch negative lead of voltmeter to a good ground. Touch positive lead of voltmeter to each ground terminal. With engine running, voltmeter should indicate less than one volt. If reading is one volt or more, check for open, corrosion and loose connection on ground lead.