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| There are different control units for vehicles with petrol or diesel engine → Chapter (adaption) and → Parts List. |
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| In addition to the different part number and the marked type of fuel (e.g. petrol), control units for vehicles with petrol engine are currently identified by way of a green dot -C- on the control unit rating plate. |
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| The self-diagnosis “Adaption” function can be used to switch the type of fuel in the auxiliary heater control unit -J364- → Chapter. |
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| In auxiliary heating mode, the metering pump -V54- is actuated with full voltage by the auxiliary heater control unit -J364- up to control unit part number index “B”. For control units as of part number index “C” (gradual introduction as of Model Year 2005), the voltage for the actuation signal of the metering pump -V54- will be limited in auxiliary heating mode to 9.2 V with the petrol version and 9.8 V with the diesel version, thus reducing the operating noise of the metering pump -V54-. |
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| Removal and installation involve detaching the auxiliary heater from the vehicle in the case of horizontally installed auxiliary heaters → Chapter. |
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| Removal and installation involve removing the auxiliary heater on vehicles with vertically installed auxiliary heaters → Chapter. |
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| If the auxiliary heater control unit -J364- is replaced, the function of at least one remote control hand transmitter must be checked on vehicles with “Remote control” as optional extra (if function is not OK, all hand transmitters must be adapted to the auxiliary heater control unit -J364-) → Chapter (remote control assignment is performed in auxiliary heating radio controlled receiver -R64- by way of the auxiliary heater control unit -J364-). |
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| If the auxiliary heater control unit -J364- is replaced, auxiliary heater self-diagnosis must be performed (interrogate fault memory, check encoding and adaption etc.) → Chapter. |
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