Left Combination Valve, Removing And Installing: Removing

WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When installing, bring all cable ties back to same positions.

-- Remove the left front muffler, refer to FRONT MUFFLER, REMOVING AND INSTALLING .

-- Remove the tower brace, refer to TOWER BRACE, REMOVING AND INSTALLING .

-- Remove the left front wheel housing liner, refer to FRONT WHEEL HOUSING LINER, REMOVING AND INSTALLING .

-- Remove the bolts -arrows-, and remove the left subframe heat shield -1-.

Fig 1: Identifying Subframe Heat Shield Bolts

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CAUTION:

Danger of causing damage to electronic components.

Complete the steps for disconnecting the battery.

-- Turn off the ignition and remove the key.

-- Disconnect the ground cable from the battery terminal, refer to BATTERY, DISCONNECTING AND CONNECTING .

-- Free up the Oxygen Sensor 2 after Catalytic Converter -G131- wire.

Fig 2: Identifying Nuts, Bolt And Left Catalytic Converter

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-- Remove the screw -1- and nuts -arrows-. Then remove the left catalytic converter from the exhaust manifold.

-- Remove the bolts -arrows-, pull the filler tube -1- out of the windshield washer fluid reservoir and out of the opening in the body and move it to the right.

Fig 3: Identifying Bolts

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-- Remove the cap nut -2- and free up the ground cable.

Fig 4: Engine Control Module Location

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-- Open the retainer -arrow- and remove the Engine Control Module -J623- -1- from the bracket and move it to the side.

-- Remove the bolts -arrows- and the cover -1- from the plenum chamber E-box.

Fig 5: Identifying Bolts And Cover

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-- Disconnect the connectors -1- and remove the nut -2- for the wire.

-- Release the retainers in direction of -arrows- and remove the relay carrier with the fuse panel -3-.

-- Disengage the engine wiring harness from the plenum chamber E-box and free it up.

Fig 6: Identifying Connectors And Nut

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-- Release the retainers in direction of -arrows A- and remove the wiring bushing -1- upward in direction of -arrow B-.

Fig 7: Identifying Wiring Bushing

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-- Free up the wiring harness and push it to the side.

-- Remove the bolts -arrows- and the heat shield -1-.

Fig 8: Identifying Heat Shield Bolts

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-- Remove the screws -3- for the secondary air hose.

-- Remove the vacuum line -2- from the secondary air injection combination valve.

-- Remove the bolts -1- and remove the secondary air injection combination valve.

Fig 9: Identifying Vacuum Line -2- And Secondary Air Injection (Air) Combination Valve

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