A3 Quattro V6-3.2L (BUB) (2008)
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If the specified value was obtained:
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Switch the ignition on.
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Using a Multimeter, check the Motronic Engine Control Module (ECM) Power Supply Relay (J271) socket 2/87 to the Secondary Air Injection
(AIR) Pump Relay (-J299- ) socket 1/25 for voltage.
Specified value: battery voltage.
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Switch the ignition off.
If the specified value was not obtained:
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Check the wiring connections from the Motronic Engine Control Module (ECM) Power Supply Relay (J271) socket 2/87 to the Secondary Air
Injection (AIR) Pump Relay (-J299-) socket 1/25 for an open circuit or a short circuit.
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Check the wiring connections for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.
If the specified value was obtained:
Checking activation
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Install the Secondary Air Injection (AIR) Pump Relay (-J299-).
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Switch the ignition on.
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Using a Multimeter, check the Secondary Air Injection (AIR) Pump Relay (-J299-) socket 2/24 to Ground (GND)
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Switch the ignition off.
Specified value: battery voltage.
If the specified value was not obtained:
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Check or replace the Secondary Air Injection (AIR) Pump Relay (-J299-).
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Check the wiring connections for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.
If the specified value was obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) ( J220). Refer to => [ Motronic Engine Control Module, Replacing ] See: Powertrain
Management/Computers and Control Systems/Description and Operation/Motronic Engine Control Module.
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Using a Multimeter, check the Secondary Air Injection (AIR) Pump Relay (-J299-) socket 2/24 to the Motronic Engine Control Module (ECM)
(J220) electrical harness connector T121 terminal 46 for resistance.
Specified value: 1.5 ohms Max.
