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Home >> Audi >> 2017 >> RS 3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (EXHAUST SYSTEM (4-Cylinder TDI Common Rail 1.6L; 2.0L 4V Engine) -- (A3 SEDAN)) >> 26 Exhaust System >> Emissions Control >> Emissions Control Module, Removing And Installing >> Removing

Emissions Control Module, Removing And Installing: Removing

WARNING: This page is about a different car, the 2016 Audi A3 and 2015 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove the front exhaust pipe. Refer to FRONT EXHAUST PIPE, REMOVING AND INSTALLING .

-- Remove The Subframe With The Steering Gear. Refer to SUBFRAME WITH STEERING GEAR, REMOVING AND INSTALLING .

-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING WITHOUT COOLING SYSTEM CHARGE KIT - ELECTRIC VACUUM PUMP .

-- Remove the EGR cooler. Refer to EGR COOLER, REMOVING AND INSTALLING .

-- Release and disconnect the connector -1-.

GWWA10-11626Courtesy of AUDI OF AMERICA, LLC

-- Release the retainers with a screwdriver -arrow- and move the coolant expansion tank to the side.

-- Remove the Exhaust Gas Temperature Sensor 2 -G448-. Refer to EXHAUST GAS TEMPERATURE SENSOR 2 -G448-, REMOVING AND INSTALLING .

-- Remove the Exhaust Gas Temperature Sensor 3 -G495- and Exhaust Gas Temperature Sensor 4 -G648-. Refer to EXHAUST GAS TEMPERATURE SENSOR 3 -G495- /EXHAUST GAS TEMPERATURE SENSOR 4 -G648-, REMOVING AND INSTALLING .

-- Remove the Heated Oxygen Sensor -G39-. Refer to HEATED OXYGEN SENSOR -G39-, REMOVING AND INSTALLING .

-- If equipped, remove the Oxygen Sensor After Catalytic Converter -G130-. Refer to OXYGEN SENSOR AFTER THREE WAY CATALYTIC CONVERTER -G130-, REMOVING AND INSTALLING .

-- Open the heat shield boot -1-.

GWWA15-11534Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors -3, 4 and 5-.

-- Remove the Differential Pressure Sensor -G505- and Exhaust Pressure Sensor 1 -G450- and then place them on the engine with the lines still attached.

Vehicles With SCR System: 

-- Remove the connector -4- from the bracket, disconnect it, and free up the wire.

GWWA26-11525Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -1- and remove clamp.

-- Free up the coolant hoses -3- and the reducing agent delivery line -2-.

-- Remove the coolant hoses from the toothed belt guard.

-- Remove the Reducing Agent Injector -N474- and lay it to the right side with the lines connected.

Vehicles With Two Differential Pressure Lines: 

GWWA26-11396Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -3-.

-- Loosen the clamps -1- and remove the hoses.

-- Unclip the control lines -2- and remove with the differential pressure sensors.

Vehicles With One Differential Pressure Line: 

GWWN26-10901Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -arrow-.

-- Open the hose clamp -A- and remove the hose.

-- Unclip the control lines -B- and remove with the differential pressure sensor.

Vehicles With Coolant Pipe Above Emissions Control Module 

GWWA19-11571Courtesy of AUDI OF AMERICA, LLC

-- Open the hose clamp -1- and remove the coolant hose.

-- Remove the bolt -2- and -3- and pivot the coolant line to the side.

Vehicles With Parking Heater: 

GWWA19-11650Courtesy of AUDI OF AMERICA, LLC

-- Lift the clamps -1-, loosen the hose clamp -2- and remove the coolant hoses.

-- Remove the nuts -arrows- and the coolant pipes.

AWD Vehicles: 

GWWA34-11071Courtesy of AUDI OF AMERICA, LLC

-- Remove The Right Drive Axle From The Bevel Box And Tie It Up Toward The Rear. Refer to OVERVIEW - DRIVE AXLE (VARIETY) / OVERVIEW - DRIVE AXLE / DRIVE AXLE, REMOVING AND INSTALLING .

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

-- Mark the position of flexible disc and the bevel box flange to each other for reinstallation.

GWWA10-10247Courtesy of AUDI OF AMERICA, LLC

-- Using a lever to counterhold the triangular flange, remove the drive axle from the bevel box -arrows-.

-- Press the engine/transmission assembly slightly forward (toward the front end) and remove the drive axle from the bevel box.

-- Tie up the drive axle to the left side of the vehicle.

Continuation For All Vehicles: 

GWWN26-10903Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -arrow-.

-- If equipped, remove the noise insulation over the fuel injectors.

-- Position the :T10511  on the bolt heads of the cylinder head cover.

GWWN26-10902Courtesy of AUDI OF AMERICA, LLC

-- Engage the retaining bracket -arrow- in the emissions control module strap.

-- Open the screw-type clamp -1- and position on the emissions control module entrance funnel.

GWWN26-10904Courtesy of AUDI OF AMERICA, LLC

-- Remove the rest of the bolts in the order -4, 3 and 2-.

-- Pivot the lower emissions control module away from the engine and push upward.

-- Pull the brackets from the emissions control module mounting strap and remove the emissions control module downward.