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Home >> Jaguar >> 2020 >> XF Checkered Flag >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Electronic Engine Controls - INGENIUM I4 2.0L Diesel -- XE (X760)) >> Electronic Engine Controls - INGENIUM I4 2.0L Diesel >> Description And Operation >> Description >> Diesel Exhaust Fluid (Def) Components - EU5/6 And NAS Only >> Diesel Exhaust Fluid (DEF) Heater Control Unit

Diesel Exhaust Fluid (DEF) Heater Control Unit

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
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The Diesel Exhaust Fluid (DEF) heater control unit is located in the luggage compartment, adjacent to the battery. The control unit receives a permanent 12 V battery supply via the BJB and the RJB.

The DEF heater control unit provides current information for each heater power stage on a private CAN bus to the PCM. Any faults detected are stored in the PCM fault memory and can be retrieved with an approved diagnostic system.

The DEF line heater receives a power supply from the DEF heater control unit and provides heating of the DEF as it passes from the DEF tank to the DEF injector in cold conditions.

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