S8 Quattro Sedan V10-5.2L (BSM) (2009)
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Switch the ignition off.
Specified value: battery voltage.
If the specified value was not obtained:
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Check the wiring from the Secondary Air Injection (AIR) Solenoid Valve (N112) electrical harness connector terminal 1 to the Engine Component
Power Supply Relay (J757) terminal 2/87 for a short circuit to Ground (GND), or an open circuit.
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Check the electrical harness connector for damage, corrosion, lose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking wiring connections
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 Engine Control Module (ECM) (J623).
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Using a multimeter, check the Secondary Air Injection (AIR) Solenoid Valve (N112) electrical harness connector terminal 2 to the Engine Control
Module (ECM) (J623) electrical harness connector T94a terminal 72 for an open circuit.
