Safety precautions

To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted:

Do not touch or disconnect ignition wiring when the engine is running or being turned at starter speed.
The ignition must be switched off before connecting or disconnecting injection or ignition system wiring or tester cables.
If the engine is to be turned at starter speed, without starting, e.g. when checking compressions, disconnect connector from output stage:

Fig 1: Disconnecting All 4 -Pin Connectors From Ignition Coils

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Fig 2: Identifying Fuse 32

Courtesy of VOLKSWAGEN OF AMERICA, INC.

NOTE: Fuse block is located behind access panel at far left end of dash.

NOTE: Removing fuse 32 interrupts the voltage supply to the injectors.

Observe following if test and measuring instruments are required during a test drive:

Test and measuring instruments must be secured to rear seat and operated by a 2nd person from this location.
If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered.