Test requirements

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The respective fuses of Motronic Engine Control Module (ECM) -J220- must be OK.

Battery voltage must be at least 11.5 volts.
All electrical consumers like, for example, lights and rear window heating must be switched off.
Parking brake must be engaged or else daylight driving lights will be switched on.
Ground (GND) connections between engine and chassis must be OK.

Fig 1: Identifying Fuses

Courtesy of VOLKSWAGEN OF AMERICA, INC.

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