* Please Read First Before Testing *
WARNING: This page is about a different car, the 1989 BMW 325is, 1989 BMW 325iX, and 1989 BMW 325i. However, it is still accessible from the selected car via links, so may be relevant.
For all of the following testing the component or circuit is at test terminal 55-point connector unless otherwise specified.
CAUTION:
Use only a digital voltmeter, ohmmeter, or multimeter with high input impedance. The electrical characteristics of other types of test equipment may cause inaccurate results or damage to the electronic components.
NOTE:
The ignition must be OFF before disconnecting or connecting any electrical connections.