volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 2395 > < Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 2393
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Specified value: 2.5 to 10.0 ohms (at approx. 20° C)

If the specification was not obtained:

-

Replace the Heated Oxygen Sensor (HO2S) (G39) 

If the specification is obtained:

Checking voltage supply

-

Crank the engine.

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Using a multimeter, check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminal 4 to Ground (GND) for voltage.

-

Switch the ignition off.

Specified value: Battery voltage.

If the specification was not obtained:

-

Check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminal 4 to the Fuel Pump (FP) Relay (J17) socket 2/87 for an
open circuit, a short circuit to each other, or Ground (GND).

-

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 2395 > < Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 2393