BMW 1999-2005 M3 Service Manual page 958

Electrical System - General
10 of 10
Copyright © 2006 Robert Bentley, Inc. All rights reserved.
http://ebahn.bentleypublishers.com/BMW/3/E46/Repair%20Manuals/6...
Do not try to start the engine of a
car which has been heated above
176F/80C, (for example, in a paint
drying booth). Allow it to cool to
normal temperature.
Disconnect the battery before
doing any electric welding on the
car.
Do not wash the engine while it is
running, or anytime the ignition is
switched on.
Choose test equipment carefully.
Use a digital multimeter with at
least 10 megaohm input
impedance, or an LED test light.
An analog meter (swing-needle)
or a test light with a normal
incandescent bulb may draw
enough current to damage
sensitive electronic components.
An ohmmeter must not be used to
measure resistance on solid state
components such as control units
or time delay relays.
Always disconnect the battery
before making resistance (ohm)
measurements on the circuit.
2/25/2009 11:07 PM