Removal and Installation: Removal
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the battery or batteries. Refer to Battery Disconnect
.WARNING: Battery acid and battery acid fumes are extremely dangerous and can cause severe burns and explosion. To help reduce the risk of personal injury:
- Wear appropriate goggles and protective clothing.
- Always properly ventilate the area where the service is being performed.
- Never allow battery fluid to come in contact with skin, eyes, fabrics or painted surfaces.
- To avoid arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.
- If acid contacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.
- Support the decomposition tube and SCR catalyst assembly with a suitable tool.
- Remove the nuts (A) that connect the DOC and DPF assembly to the decomposition tube and SCR catalyst assembly.CAUTION: Do not reuse gasket.
- Remove the exhaust tailpipe. Refer to Removal and Installation
- Disconnect the harness connectors from the following sensors:
- Outlet NOx sensor
- SCR temperature sensor module
- Particulate matter sensor
- Remove the following sensors from the frame assembly:
- Outlet NOx sensor: Refer to Removal and Installation .
- SCR temperature sensor module: Refer to Removal and Installation .
- Particulate matter sensor: Refer to Exploded View .
- Disconnect the DEF dosing valve supply hose (1) and harness connector (A) from the DEF dosing valve (2).
- Remove bolts (A) from the decomposition and SCR catalyst assembly front hanger (1).
- Remove bolts (A) from the decomposition tube and SCR catalyst assembly rear hanger (1).CAUTION: The decomposition tube and SCR catalyst assembly needs to be supported when removing the hanger.
- Remove the decomposition tube and SCR assembly and hangers as an assembly.