Test requirement

Fig 1: Identifying Main Fuse Panel

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• The respective fuses of Mass Air Flow (MAF) Sensor -G70- must be OK:

Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations

• Battery voltage must be at least 11.5 volts.
• All electrical consumers such as, lights and rear window defroster must be switched off.
• For vehicles with automatic transmission, selector lever must be in position -P- or -N-.
• If vehicle is equipped with an A/C system, it must be switched off.

• Ground (GND) connections between engine and chassis must be OK.
• Coolant temperature must be at least 80 ° C. Refer to Diagnostic mode 1: Check measured values  ; PID 5, Coolant temperature.