Fuel Consumption Signal, Checking

^ connect adaptor harness VAG 1598/13 to ten-point instrument cluster connector (black)
^ connect adaptor harness to Test box VAG 1598
^ set digital multimeter Fluke 83 (US 1119) to 2 Volt range
^ connect multimeter between sockets 5 and 1 of Test box VAG 1598

^ start engine
^ raise and lower engine speed between 1000 and 4000 RPM
^ must be approximately 0.3-1.0 V depending on engine RPM