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1、Participant s Manual E90 Heating and Air Condi- tioning SystemsBMW ServiceTheinformationcontainedinthisParticipant sManualisintendedsolelyforthoseattendingthis seminar run by BMW Aftersales Training.Refer to the latest relevant “BMW Service“ information for any changes/supplements to the Technical D
2、ata.Information status: October 2004conceptinfobmw.de 2004 BMW AG Mnchen, Germany. Reprints of this manual or its parts require the written approval of the BMW AG, Mnchen. VS-12 Aftersales TrainingParticipant s Manual E90 Heating and Air Conditioning SystemsEquipment variantsIHKA system circuit diag
3、ramElectronic componentsNon-electrical componentsAuxiliary heatingContents Heating and Air Conditioning Systems E90Objectives1 Purpose of this Participant s Manual1Introduction3 Equipment variants3System overview5 IHKA - IHKR - auxiliary heating5System components11 Electronic components of the IHKA1
4、1 Non-electrical components of the IHKA1316Objectives E90 Heating and Air Conditioning SystemsPurpose of this Participant s ManualThe Participant s Manual is a document designedtoaccompanyaseminarwhileatthe same time serving as a source of reference.This Participant s Manual deals with the new devel
5、opments implemented in the heating and air conditioning system for the E90 model series.2637Introduction E90 Heating and Air Conditioning SystemsEquipment variantsThe E90 is equipped with an integrated heating/air conditioning control system (IHKR) as standard.An integrated automatic climate control
6、 system (IHKA) is optionally available.The control and operating units make it possible to distinguish the two different systems at a glance.Separate temperature adjustment for the driver and front passenger is possible only on the IHKA. The IHKA is also the only system to feature a residual heat fu
7、nction.1 - Integrated heating and air conditioning control (IHKR)2 - Integrated automatic climate control (IHKA)4758System overview E90 Heating and Air Conditioning SystemsIHKA - IHKR - auxiliary heating68IHKA1 - IHKA system circuit diagram78IndexExplanationIndexExplanation 1Electric auxiliary heate
8、r (PTC element)22Pressure sensor2Alternator23Water valve 3Digital motor electronics/digital diesel electronics (DME1/ DDE1)24A/C compressor valve4Air flap control25Outside temperature sensor 5EC fan26Blower 6Defroster flap motor27Blocking circuit 7Fresh air/recirculating air flap motor28Rear window
9、defogger8Multi-audio system controller (M-ASK)/Car communication computer (CCC)29Blocking circuit9Condensation sensor30Seat heating, right 10AUC sensor31Seat heating, left 11Ventilation flap motor32Rear compartment temperature sensor 12Footwell flap motor33Solar sensor (1-channel) 13Stratified-tempe
10、rature control motor, front compartment34Stratified-temperature sensor14Stratified-temperature motor, rear compartment35Ventilation temperature sensor15Air mixing flap motor, right36Evaporator temperature sensor 16Air mixing flap motor, left37IHKA Integrated automatic climate control 17Central infor
11、mation display (CID) 38Centre console switch cluster (SZM) 18Roof functions centre (FZD)39Button, right seat heating 19Junction box (JB)40Button, left seat heating 20Instrument cluster41Footwell temperature sensor 21Auxiliary water pump (ZWP)42Controller (CON)88IHKR2 - System circuit diagram IHKR98I
12、ndexExplanation 1Electric auxiliary heater (PTC element) 2Alternator 3Digital motor electronics/digital diesel electronics (DME1/DDE1) 4Air flap control 5EC fan 7Fresh air/recirculating air flap motor 11Ventilation flap motor 16Air mixing flap motor, left 19Junction box (JB) 20Instrument cluster 21A
13、uxiliary water pump (ZWP) 22Pressure sensor 23Water valve 24A/C compressor valve 25Outside temperature sensor 26Blower 27Blocking circuit 28Rear window defogger 29Blocking circuit 30Seat heating, right 31Seat heating, left 32Rear compartment temperature sensor 33Solar sensor (1-channel) 34Stratified
14、-temperature sensor 35Ventilation temperature sensor 36Evaporator temperature sensor 37Integrated heating and air conditioning regulation (IHKR) 38Centre console switch cluster (SZM) 39Button, right seat heating 40Button, left seat heating 41Footwell temperature sensor108Auxiliary heating Thermo Top
15、 V3 - Independent heatingIndexExplanationIndex 1Independent heating7Controller 2Changeover valve8Integrated automatic heating/air conditioning system (IHKA)/ integrated heating regulator (IHKR) 3Auxiliary water pump (ZWP)9Multi-audio system controller (M-ASK)/car communication computer (CCC) 4Juncti
16、on box (JB)10Central information display (CID) 5Metering pump, auxiliary heating11Comfort access system (CAS) 6Antenna amplifier12Instrument cluster119System components E90 Heating and Air Conditioning SystemsElectronic components of the IHKAA/C control and operating unitAsbefore,thecontrolandoperatingunitisthe control centre of the heating and air conditioning system. It is the point where all the necessary sensor data converge and the required settings can be entered.Anewfeatur
