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Automotive Electricians Portal FZCO
Automotive Electricians Portal FZCO Wiring diagramComponents
Component code | Name | Assembly reference |
A1 | Battery | A10 | Alternator | A10 | Alternator | B105 | Additional heater remote control receiver fuse | - |
B37 | Fuse (MAXI FUSE) spark plug and diesel preheating | - |
B37 | Fuse (MAXI FUSE) spark plug and diesel preheating | - |
B38 | Fuse for supplementary heater | - |
C20 | Passenger side dashboard earth | - |
D1 | Front/facia junction | - |
D4 | Front/engine junction | - |
D4 | Front/engine junction | - |
D8 | Air conditioning heater front coupling | - |
D8 | Air conditioning heater front coupling | - |
D22 | Additional heater junction | - |
H80 | Climate control system controls | J36 | Additional heater relay | - |
K79 | Additional heater outside air temperature sensor | - |
K79 | Additional heater outside air temperature sensor | - |
M70 | Climate control system control unit | M72 | Fan speed transformer | M72 | Fan speed transformer | M74 | Additional heater remote control receiver | - |
M74 | Additional heater remote control receiver | N85 | Passenger compartment ventilation fan | R10 | Multiple tester connection | - |
Location of componentsComponents
Component code | Name | Assembly reference |
A1 | Battery | A10 | Alternator | A10 | Alternator | B105 | Additional heater remote control receiver fuse | - |
B37 | Fuse (MAXI FUSE) spark plug and diesel preheating | - |
B37 | Fuse (MAXI FUSE) spark plug and diesel preheating | - |
B38 | Fuse for supplementary heater | - |
C20 | Passenger side dashboard earth | - |
D1 | Front/facia junction | - |
D4 | Front/engine junction | - |
D4 | Front/engine junction | - |
D8 | Air conditioning heater front coupling | - |
D8 | Air conditioning heater front coupling | - |
D22 | Additional heater junction | - |
H80 | Climate control system controls | J36 | Additional heater relay | - |
K79 | Additional heater outside air temperature sensor | - |
K79 | Additional heater outside air temperature sensor | - |
M70 | Climate control system control unit | M72 | Fan speed transformer | M72 | Fan speed transformer | M74 | Additional heater remote control receiver | - |
M74 | Additional heater remote control receiver | N85 | Passenger compartment ventilation fan | R10 | Multiple tester connection | - |
DescriptionThe vehicle is fitted with an autonomous additional heater in case the passenger compartment needs to be heated more quickly, with the engine running, if the climatic conditions are particularly harsh.The system basically consists of:a heater unit fixed to the front suspension crossmember and the underbody floor panelan electric fuel pump fixed to the underbody near the fuel tankan outside air temperature sensor positioned under the left front light clusteran exhaust pipe connected directly to the heater unit
An electronic control unit integrated in the unit controls the switching on, the maintenance and the switching off of the heater.The ignition of the mixture is guaranteed by a spark plug, the combustion is ensured by the air coming from a special fan and the fuel coming from an electric metering pump. The heat produced in the combustion chamber is surrendered to the engine coolant which comes into contact with it. The exhaust gases are expelled through a special exhaust pipe. For more details, 2888277see DESCRIPTION AND OPERATION:5020M
supplementary independent heaterThe additional heater circuit is protected by a specific fuse, located in the engine compartment in the relay and fuse box.The system only works with the engine running. Functional description The additional heater unit is connected to the vehicle electrical system through connector D22 . This connector, pin 2, receives a direct supply through the line protected by the maxifuse B37 , which also supplies the diesel pre-heating system and by a specific fuse B38 ; pin 3 is earthed. Pin 1 of D22 is connected to the outside air temperature sensor K79 which, in turn, receives the reference supply from the alternator (D+ pin signal): in this way the signal for the outside temperature is only sent to the additional heater control unit if the engine is running. The additional heater control unit is equipped with an autodiagnostic system which can be used: by connecting the unit to connector R10 : it receives signals from pin 4 of D22 via the diagnostic line.
Battery
A001A
A001A
A001B
A001B
A001C
A001D
A001D
A001E
A001F
A001F
A001G
A001G
A001G
A001G
Battery
A001A
A001A
A001B
A001B
A001C
A001D
A001D
A001E
A001F
A001F
A001G
A001G
A001G
A001G
Battery
A001A
A001A
A001B
A001B
A001C
A001D
A001D
A001E
A001F
A001F
A001G
A001G
A001G
A001G
Fuse (MAXI FUSE) spark plug and diesel preheating
B037
Fuse for supplementary heater
B038
B038
B038
B038
Passenger side dashboard earth
C020
C020
C020
C020
C020
Front/facia junction
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001B
D001B
D001B
D001B
D001B
D001B
D001B
D001B
D001B
D001B
D001B
D001C
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001A
D001C
D001C
D001C
D001C
D001C
D001C
D001C
D001C
D001A
D001C
D001C
Front/engine junction
D004A
D004A
D004B
D004B
D004
D004
D004
D004
D004A
D004A
D004B
D004B
D004B
D004B
D004B
D004
D004
D004
D004
D004B
D004B
D004B
D004B
D004B
D004B
D004B
D004B
D004B
Air conditioning heater front coupling
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
D008
Additional heater junction
D022
D022
D022
D022
Climate control system controls
H080
H080
H080
H080
H080
H080
H080
H080
Climate control system controls
H080
H080
H080
H080
H080
H080
H080
H080
Additional heater outside air temperature sensor
K079
K079
K079
K079
K079
Climate control system control unit
M070A
M070B
M070A
M070A
M070B
M070B
M070A
M070A
M070B
M070B
Climate control system control unit
M070A
M070B
M070A
M070A
M070B
M070B
M070A
M070A
M070B
M070B
Additional heater remote control receiver
M074
M074
Additional heater remote control receiver
M074
M074
Additional heater remote control receiver
M074
M074