A5 Quattro Coupe V6-3.2L (CALA) (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
‹› Fuse (SB10) OK.
‹› The Motronic Engine Control Module (ECM) Power Supply Relay (J271) OK.
‹› The ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Powertrain Management/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 1 (G609) electrical harness connector - 1 -.
Checking voltage supply
‹› The voltage for the Secondary Air Injection Sensor 1 (G609) is supplied by the Motronic Engine Control Module (ECM) Power Supply Relay
(J271) OK.
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Using a multimeter, check the Secondary Air Injection Sensor 1 (G609) electrical harness connector terminal 1 for voltage.