TT Roadster L4-2.0L Turbo (BWA) (2009)
-
Start the engine.
-
Using a multimeter, check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminals 1 to 5 for voltage.
Specified value: 0.400 to 0.500 Volts
-
Switch the ignition off.
If the specified value was obtained:
-
Replace the Heated Oxygen Sensor (HO2S) (G39).
If the specified value was not obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step
.
-
Install the test box.
If the manufacturers test box is not being used. Perform the following step.
-
Remove the Engine Control Module (ECM) (J623). Refer to => [ replacing ] See: Powertrain Management/Computers and Control
Systems/Engine Control Module/Testing and Inspection/Engine Control Module (ECM) (J623).
-
Using a Multimeter, check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminals to the Engine Control Module (ECM)
(J623) electrical harness connector T94 terminals for resistance.