R8 Quattro Coupe V8-4.2L (BYH) (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 Engine Control Module (ECM) (J623) fuses OK.
‹› The parking brake engaged.
‹› The battery voltage at least 12.5 V.
‹› The selector lever of automatic transmission in position "P" or " N".
‹› All electrical consumers switched off.
‹› A/C switched off.
‹› The fuel tank at least 1/4 filled.
‹› The ignition switched off.
Test procedure
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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
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Disconnect the Secondary Air Injection Sensor (AIR) 1 (G609,) electrical harness connector - 3 -.
Checking voltage supply
Switch the ignition on.
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Using a Multimeter, check the Secondary Air Injection Sensor (AIR) 1 (G609,) electrical harness connector for voltage.