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ZEE Unit (Fuse Box)

Mod Description
The ZEE unit is the fuse and relay module that is used in 600cc smarts instead of the SAM unit that is found in 700cc smarts.
Mod Details
PremiumNo Difficulty Mod ID545 CreditEvilution For450 Fortwo Linkhttps://www.evilution.co.uk/mod/zee-unit-fuse-box.htm Copy to Clipboard

The ZEE Unit

ZEE unit stands for Zentrale Einschub Elektrik which translated means Central Electric Module.

The ZEE unit is the 600cc version of the SAM unit. It carries the fuses in very much the same way but the relays are all external so can be swapped over.

Where the 700cc SAM unit is one part, the ZEE unit comprises of 3 sections.

Fuses, OBD and partial relay holder.
ZEE insert module that controls the electronics.
Secondary fuse and relay box located under the seat.

Removing And Opening The ZEE Unit

The main ZEE connector (outlined red), if your car is doing strange things, check this isn’t loose.

The ZEE insert slides out of the side.

The insert fully removed. Circled in yellow is the small speaker that makes all the beeping noises.

Surrounding the unit are plastic tabs, these are easy to unclip.

With all of the clips undone you can remove the top to reveal the cicuit board.

This is as far as you can get with viewing the ZEE insert, the rear plastic housing cannot be removed without damaging something. Highlighted in blue is the outline of relays L and M which are located on the other side of the ZEE insert circuit board. These cannot be removed or changed unlike the other relays.

Todor T cut a hole in a ZEE unit to show us the relay. (2 relays in 1 package).

Main Fuse And Relay Holder

Located under the dashboard. The fuse ratings and layout can be found here.

From 16/11/1999

Relay Coupe Function
A Front fog lights
B Boot solenoid
C Rear wiper interval
D Horn
E Relief for igntion, heater and windows
F Rear window heater
G Front coolant and AC fan
H Left turn indicator
I Right turn indicator
K Front wiper interval
L Central locking (inside ZEE unit)
M Central locking (inside ZEE unit)
Relay Cabrio Function
A Front fog lights
B Soft top open
C Soft top close
D Horn
E Relief for igntion, heater and windows
F Boot solenoid
G Front coolant and AC fan
H Left turn indicator
I Right turn indicator
K Front wiper interval
L Central locking (inside ZEE unit)
M Central locking (inside ZEE unit)

Depending when your car was made, you could have hidden headlight relays or none at all., read further down.

Up to 15/11/1999

Relay Coupe Function
A Front fog lights
B Central Locking Locked
C Central Locking Open
D NA
E Rear Hatch Remote Unlocking
F Rear window heater
G Front coolant and AC fan
H Left turn indicator
I Right turn indicator
K Front wiper interval

The wipers, horn and relays are separate from the ZEE, they are hidden behind the dash.

Headlight Relays?

This only applies to 600cc smarts made from 2002 onwards.

For some odd reason, smart decided to put the headlight relays elsewhere. On a right hand drive smart, the relays are hidden behind the stereo. On a left hand drive smart, the relays are behind the main instrument cluster. If your 600cc smart was made before 2002, there were no relays for the headlights.

Main Loom Socket Wiring

A Wire Colors Connection Fuse
1 Red Green Wiper stalk
2 Grey Red Wiper stalk
3 Grey Blue Ignition position 2
4 Brown White Safety triangle +v
5 Red Green Wiper stalk
6 Blue Blower switch
7 Yellow Black Fog lamp switch
8 Black Green Lighting stalk
9 Black White Lighting stalk
10 Black Door solenoid microswitch
11 Yellow White Door catch microswitch left
12 Blue White Handbrake switch
14 Yellow Red Door catch microswitch right
15 Black Blue Heater booster switch
17 Yellow Green Restraint control
18 Brown Earth
19 White Grey OBD pin 1
20 Grey Green 26
21 Grey Black ATA control unit
22 Brown Blue Centre console lamp
23 Violet ATA control unit
24 White Key RF/IR receiver
25 Green Safety triangle AC1
26 Grey Safety triangle AC2
27 Black Red/Blue Red Safety triangle window heater
28 Blue Yellow Safety triangle lock
29 Violet Blue Safety triangle hazards
B Wire Colors Connection Fuse
31 Brown Red Instrument cluster
32 Grey Blue Central locking open
33 Red Green Multi connector Z50/2
34 Red Blue 10
35 White Black Instrument Cluster
36 White Blue Central locking closed
37 Red White 15
38 Brown Earth

Secondary Fuse And Relay Holder

Located under the carpet underneath the left hand seat.

Wiring

Connector 1

1 Wire Colors Connection
1 Black Pink MEG 1.0
2 Red Black Fuel pump
3 Red Blue Primary fuse box
4 Red Blue Primary fuse box
5 Blue MEG 1.0
6 Black White MEG 1.0
7 Pink Blue MEG 1.0

Connector 2

2 Wire Colors Connection
1 Green Charcoal valve
2 White Yellow MEG 1.0
3 Green Blue MEG 1.0
4 Red Green Primary fuse box
5 Yellow MEG 1.0
6 Red Battery
7 Brown Earth
8 Black Yellow MEG 1.0

Connector 3

M Wire Colors Connection
1 Green Coil pack 1+2+3
2 Green Injector 1+2+3
3 Blue AC compressor
5 Blue Starter
6 Yellow Intercooler fan
7 White Wastegate valve
Relays

Petrol
Relay Number Function
K1 Fuel Pump
K2 Auto transmission
K3 Main Relay (powers F3, F4, K3)
K4 Intercooler fan
K5 Starter Relay
K6 A/C Compressor
Fuse Number Function Rating
F1 Intercooler, AC magnetic clutch 15 Amps
F2 Fuel pump 10 Amps
F3 ECU, Injectors 15 Amps
F4 Tank vent valve, Lambda sensor 10 Amps

Diesel

Relay Number Function
K1 Fuel Pump
K2 Auto transmission
K3 Main Relay (powers F3, F4, K3)
K4 Intercooler fan
K5 Starter Relay
K6 A/C Compressor
Fuse Number Function Rating
F1 Intercooler, AC magnetic clutch 15 Amps
F2 Fuel pump 10 Amps
F3 ECU, Electrical Cut off, Pressure Valve 15 Amps
F4 Glow plug timing control 10 Amps

Credits

Thanks to Ian F for the correction with the secondary fuse box.