Removal And Installation

REMOVAL 

1. Disconnect and isolate the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), disconnect the IBS connector first before disconnecting the negative battery cable.
2. Remove the right rear wheelhouse splash shield. Refer to SHIELD, SPLASH, REAR WHEELHOUSE, REMOVAL AND INSTALLATION .

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3. Disconnect Diesel Exhaust Fluid (DEF) wire harness connector (2) then detach the wire harness retainers.
4. Remove the nuts (1) and the DEF dosing control unit (3).

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5. If necessary, detach the DEF filler tube retainer (2).
6. If necessary, remove the upper nut (1) and securing the DEF dosing control unit bracket.

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7. If necessary, detach the DEF vent tube retainer (2).
8. If necessary, remove the lower nuts (3) and the DEF control unit bracket (1).

INSTALLATION 

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1. If removed, install the DEF control unit bracket (1) and tighten the lower nuts (3) to the proper specification. Refer to DIESEL EXHAUST FLUID EMISSIONS, TECHNICAL SPECIFICATIONS .
2. If removed, attach the DEF vent tube retainer (2).

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3. If removed, install the upper nut (1) securing the DEF dosing control unit bracket and tighten the nut (1) to the proper specification. Refer to DIESEL EXHAUST FLUID EMISSIONS, TECHNICAL SPECIFICATIONS .
4. If removed, attach the DEF filler tube retainer (2).

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5. Install the DEF control unit (3) and tighten the nuts (1) to the proper specification. Refer to DIESEL EXHAUST FLUID EMISSIONS, TECHNICAL SPECIFICATIONS .
6. Connect the DEF control unit wire harness connector (2) then attach the wire harness retainers.
7. Install the right rear wheelhouse splash shield. Refer to SHIELD, SPLASH, REAR WHEELHOUSE, REMOVAL AND INSTALLATION .
8. Connect the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), connect the IBS connector.