Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Exhaust Door Control Unit With NOX Reduction Catalytic Converter Overview
- from the Exhaust Pipe with Catalyst and Particulate Filter
- Seal
- Always replace.
- Installing, refer to Fig 2.
- Securing Clamp
- 7 Nm
- Always replace.
- Note the installed position. Refer to Fig 3.
- Exhaust Door Control Unit -J883-
- Pay attention to the installed position.
- Heat shield and connector wire routing, refer to EXHAUST SYSTEM COMPONENT WIRE ROUTING .
- NOx Reduction Catalytic Converter
- Exhaust system, checking for leaks. Refer to EXHAUST SYSTEM, CHECKING FOR LEAKS .
- Front Muffler
- Clamping Sleeve
- Tighten the threaded connections evenly. Refer to CLAMPING SLEEVE INSTALLED POSITION .
- Align the exhaust system free of stress. Refer to EXHAUST SYSTEM, INSTALLING .
- Threaded Connection
- Tighten the threaded connections evenly. Refer to CLAMPING SLEEVE INSTALLED POSITION .
-- Insert the seal -2- with the angled tab -B- in the notch -A- on the NOx reduction or exhaust pipe with catalyst and particulate filter -1-.
-- Insert the exhaust door control unit -3- with the retaining tab -C- in the notch -A-.
-- Install the new clamp so the clamping bolt is opposite the exhaust door control unit housing and the -45 +/- 10°- angle is maintained.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.