Jetta SportWagen L5-2.5L (CBUA) (2009)
Air Injection Pressure Sensor/Switch: Testing and Inspection
Secondary Air Injection Sensor 1, Checking
Special tools, testers and auxiliary items required
‹› multimeter
‹› Wiring diagram.
Test requirements
‹› The Motronic Engine Control Module (ECM) (J623) fuses OK.
‹› The fuel filter OK.
‹› The battery voltage at least 12.5 V.
‹› All electrical consumers switched off (radiator fan must NOT run during test).
‹› A/C switched off.
‹› The fuel tank at least 1/4 filled.
‹› The ignition switched off.
Test procedure
-
Perform a preliminary check to verify the customers complaint. Refer to --> [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
-
Remove the engine cover with air filter
Checking voltage
-
Disconnect the Secondary Air Injection Sensor 1 (G609) electrical harness connector.
-
Switch the ignition on.
-
Using a multimeter, check the Secondary Air Injection Sensor 1 (G609) electrical harness connector terminals for voltage.
-
Switch the ignition off.
If the specified value was obtained:
-
Replace the Secondary Air Injection Sensor 1 (G609)
If the specified value was not obtained:
Checking wiring connections
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 Motronic Engine Control Module (ECM) (J623). Refer to --> [ Motronic Engine Control Module, Replacing ] See: Computers and