volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Oxygen Sensor (O2S) Aging Oxygen Sensor 1, Checking|Page 2918 > < Oxygen Sensor (O2S) Aging Oxygen Sensor 1, Checking|Page 2916
Page 3
background image

-

Set multimeter to measure voltage and connect to contacts 1 and 2 on connector to control module.

-

Start engine and run at idling speed.

-

Measure voltage supply:

When display group 41, display zone 2 displays: Display, Htg.bC.ON:

Specification: 11.0 - 14.5 V

Display, Htg.bC.ON/Htg.bC.OFF (alternating)

Specification: Between 0.0 - 12.0 V fluctuating

-

Switch off ignition.

If no voltage is present:

-

Connect test box VAG 1598/31 to control module wiring harness. The engine control module remains disconnected.

Oxygen Sensor (O2S) Aging Oxygen Sensor 1, Checking|Page 2918 > < Oxygen Sensor (O2S) Aging Oxygen Sensor 1, Checking|Page 2916