A5 Quattro Coupe V6-3.2L (CALA) (2009)
Checking operation
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Using a jumper, connect AIR pump relay terminals 2 to 8
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Turn the ignition ON.
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The AIR pump should be running.
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Turn the ignition OFF.
If the pump does operate when using a jumper at the relay:
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Connect a test lamp to terminal 8 of the AIR relay.
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Turn the ignition ON.
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The test lamp should be ON.
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Turn the ignition OFF.
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If the test lamp did Not turn on, locate the open circuit between the relay and fuse S130.
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If the test lamp did turn ON, remove the Motronic Engine Control Module (ECM) (J623). Refer to the appropriate repair information.
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Using a multimeter, check the AIR pump relay terminal 6 to the Motronic Engine Control Module (ECM) (J623) electrical harness connector T60
terminal 2 for resistance.
Specified value: 1.5 ohms max.
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If the specified value was not obtained, repair the circuit as necessary.