Volkswagen Passat 1995 Official Factory Repair Manual page 2078

Motronic fuel injection and ignition system
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.FU08.24.1
If special testing equipment is required during
road test, note the following:
Test equipment must always be secured to the
rear seat and operated from there by a second
person.
If test and measuring equipment is operated
from the passenger seat, the person seated
there could be injured in the event of an accident
involving deployment of the passenger-side
airbag.
To reduce the risk of personal injury and/or
damage to the fuel injection and ignition system,
always observe the following:
Do not touch or disconnect ignition wires when
engine is running or turning at starting RPM.
Only disconnect and reconnect wires for
injection and ignition system, including test
leads, when ignition is switched off.
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