451-sam-unit-pin-out.htm¶

2 excerpts.

451 SAM Unit Pin Out¶

evilution.co.uk/mod/451-sam-unit-pin-out.htm · p. 1 · Applies to: 451

Mod Description SAM Unit 451 connections Mod Details Premium No Difficulty Mod ID 821 Credit evilution For Link https://evilution.co.uk/mod/451-sam-unit-pin-out.htm Copy to Clipboard So What Is The SAM Unit? Essentially it is a fuse box with internal relays and a microprocessor that controls almost all of the electrical functions of the car. The processor is flashable so it can be taught new tricks by way of a TAN code, these tricks include paddle gear shift, auto door locking, automatic gear change, day time running lights, cruise control etc. What Does SAM Stand For? Signal Acquisition & Actuation Module. Where Is It? It can be found at the top of the footwell, passenger side of a RHD smart city coupe/cabrio, driver’s side of a LHD smart city coupe/cabrio and the drivers side of a Roadster. What Does It Look Like? Just a plain boring black box with fuses pushed into the front. Although the SAM units all look the same, the 451 internals are slightly different. What About The Bits We Can’t See? The top side is where most of the wiring goes to, there are 10 connections and a positive input. All inputs are labelled. Each circuit has its own earth point around the car. There Is Something Missing Damn right, Relays. Most cars have relays in the fuse box, these control the horn, wipers, indicators, lights etc. The relays visible on the smart are for the rear fog light and heated seats. How Does That Work Then? No different except in this case the relays are actually inside the SAM unit. Inside The SAM Unit Unclip all the plastic clips around the outside With the top off you see the main fuse connections With it removed from the box you see the relays and connectors The board is in 4 parts and is bent around on itself, you can see the back of the tracks look to become damaged. This is normal and ok. It’s just the carrier between the tracks. PCB 1, 2 and 3 fold open and a flat plastic retainer can be removed. PCB 4 is populated with the microprocessor… …and many small relays No User Serviceable Parts Inside You can say that again, if you get water in this there is nothing that can be done. There is nothing you can take out or change, everything is soldered directly to the PCBs. What About Microchips? There are surprisingly few IC packages inside the SAM unit. The main one however is the Motorola MC9S12DG256C which is a 112 pin 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit (HCS12 CPU), 256K bytes of Flash EEPROM and a whole load of other stuff that means very little to me. If you want to know more about this chip. Click here . SAM connections 999cc Smart Fortwo N11-1 Wire Colors Connection Fuse 1 Red Grey Blower Motor 4 2 Red Green MAF, O2 up, Glow Plug, EGR, Cam Solenoid, Pressure Valve 8 3 Red White Power Window Control Unit 3 4 N/C N/C N/C 5 Red Pink ESP Control Unit 6 Black Yellow Alternator 1 7 Red Blue Radio 15 8 N11-2 Wire Colors Connection Fuse 1 Red White Additional Instruments pin1, rain/light sensor pin 1 12 2 Red Violet Cockpit Switch Group pin2 28 3 Violet White ECU pin72 4 Black Blue Heated Rear Window 28 5 Brown Earth 6 Red Black Soft Top Relay Close pin8 29 7 Blue AMT Control Unit pin17 8 Red Blue Soft Top Relay Open pin8 29 N11-3 Wire Colors Connection Fuse 1 Black Green Rear Wiper Motor pin2 2 Black Red Restraint Control, Yaw Sensor, ESP, Power Steering, Speedo 18 3 Black Yellow ECU pin65 19 4 Black Grey Stereo, Heated Seat Module, Wiper Stalk, Mirrors 20 5 Black Blue Cigarette lighter socket 21 6 Grey Yellow Left Low beam 22 7 Grey Violet Right Low beam 23 8 Red Yellow Stop Lamp Switch. Rear fog relay (light sensor only) 24 9 White Black Right High Beam 25 10 White Red Left High Beam 26 11 Red ECU pin80 (petrol) 27 12 N11-4 Wire Colors Connection Fuse 1 Red Black Ignition position 1 2 Red Blue AMT Module pin1 and 3 30 N11-5 Wire Colors Connection Fuse 1 2 3 Black Blue Front Wiper Motor pin3 4 Grey Yellow Black/Violet Front Fog Lights Day Time Running Lights 5 5 Yellow Front Wiper Motor pin4 6 Green Blue Rear Wiper Motor pin1 5 7 Grey Green Right Standing Lamp 6 8 Brown Grey Left Standing Lamp 7 9 Red Black Soft Top Relay, Interior Lamp 15 10 Red Yellow Fuel Injector Power 9 11 Red Grey Fuel Pump, ECU pin66,73, O2 down, Coil Packs 10 12 Blue Red CDI Control Module N11-6 Wire Colors Connection Fuse 1 Violet Starter 1 2 Red Blue Diesel Fuel Pump N11-7 Wire Colors Connection Fuse 1 Red White Power Steering Module 35 2 Red Green ESP Control Unit 34 3 Red Ignition Main Position 0 N11-8 Wire Colors Connection Fuse 1 2 Blue Black Boot Release Switch 3 Grey Brown Wiper Stalk pin4 4 Yellow White Right Door Rotary Switch 5 6 7 8 9 Blue Grey Front Wiper Motor pin2 2 10 Grey Blue Light Stalk pin2 11 12 Violet Green Microwave sensor pin 2, alarm siren pin 3 13 14 Green CAN Low ECU 15 Green White CAN High ECU 16 17 Yellow Wiper Stalk pin5 18 White Green Left Door Central Locking Switch 19 Yellow Black Left Door Rotary Switch 20 21 Brown/White Heated mirror relay pin 4 29 Red Violet Cockpit ambient illumination (lighting) 30 Grey White Rear Soft Top Microswitch 31 Violet Blue Cockpit Switches pin12 Hazards 32 Yellow Blue Soft Top Microswitch 33 Violet White Roof Cassette Microswitch 34 35 Pink Blue Soft Top Power Switch 36 Pink Yellow Boot Handle Switch 37 38 Grey Black Ignition Position 2 39 Green CAN Low to Speedo 40 Green White CAN High to Speedo N11-9 Wire Colors Connection Fuse 1 Black White Left Headlight Indicator 2 Blue Red Boot Opening Solenoid 31 3 Grey White Transponder Coil 2 (immobiliser antenna) 4 Brown Blue Front Interior Lamp 5 6 Yellow Grey Soft Top Relay pin4 7 8 Blue Cockpit Switches pin13 Tow Sensor 9 Yellow Light Stalk pin5 10 11 Black Green Right Headlight Indicator 12 Pink Cockpit Switches pin10 Central Locking 13 Blue Yellow Cockpit Switches pin8 Front Foglights 14 Violet Blue Dash Top Pods, rain/light sensor pin 2 (LIN Bus) 15 16 Black Blue Cockpit Switches pin11 Unlock 17 Green Blue Wiper Stalk pin7 18 Yellow Blue

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evilution.co.uk/mod/451-sam-unit-pin-out.htm · p. 2 · Applies to: 451

Cockpit Switches pin8 Front Foglights 14 Violet Blue Dash Top Pods, rain/light sensor pin 2 (LIN Bus) 15 16 Black Blue Cockpit Switches pin11 Unlock 17 Green Blue Wiper Stalk pin7 18 Yellow Blue Rear Fog Lamp Relay pin4 (light sensor only) 19 20 Violet White Transponder Coil 1 (immobiliser antenna) 21 Brown Black Transponder Coil 3 (immobiliser antenna) 22 Green Black Luggage Carrier/Base Rack 23 Grey Footwell Ambient Illumination (lighting) 24 Red Black Transponder Coil 4 (immobiliser antenna) 25 26 27 28 29 30 Pink Black Horn Button 31 32 33 White Black Heater Air Conditioning Unit 34 Yellow Red Light Stalk pin 35 Violet Green Light Stalk pin4 36 Green Red Wiper Stalk pin1 37 Grey Cockpit Switches pin9 Rear Fog Light (light sensor only) 38 White Red Light Stalk pin6 39 Black Brown Light Stalk pin7 40 Red Green Wiper Stalk pin10 N11-10 Wire Colors Connection Fuse 1 Brown Earth 2 White Aircon Compressor 3 Red/Blue Coolant Radiator Fan 4 Grey/Yellow Central Locking Door Open 31 5 Pink Central Locking Door Closed 31 6 Blue Horn 31 7 8 Yellow Intercooler fan 14 N11-11 Wire Colors Connection Fuse 1 12 Volt SAM Power In 33 Click if info helped 132 likes 169196 views Print