Scheme 1. Engine control unit
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- A1 instrument cluster
- F1 fuse and relay box
- Fn1 fuse 1
- Fn2 fuse 2
- Fn3 fuse 3
- Fn4 fuse 4
- Fn6 fuse 6
- Fn18 fuse 18
- K1/6 Engine Control Unit Relay
- K6 starter relay
- K9/3 Electric Radiator Fan Relay
- K9/3xl air conditioner plug
- K27 Fuel Pump Relay
- M3/3 fuel pump with fuel gauge sensor
- M3/3blfuel gauge sensor
- M3/3ml fuel pump.
- M4/2 radiator fan motor
- M4/3 air conditioner fan
- N₂/2 seat belt tensioner, airbags
- N₂/7 control unit for belt tensioners and airbags
- N76 Air Intake Control Unit
- S2 ignition and starter switch
- U87 air conditioner
- U562 heater
- m point of "mass" (-)
- W3 ground point (-) on the front left fender
- W43 ground point (-) on the engine compartment bulkhead
- X4 terminal 30
- Z6/20 Engine Wiring Harness/Instrument Panel
- Z3 terminal 15
- Z3/26 terminal 15, not protected by fuse
- Z5/2 terminal 15 (fan)
- Z7/6 terminal 87
- Z7/9 terminal 87
- Z51/19 Engine self-diagnosis system wire
Information copied from the website: www.mercedesman.ru