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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 576 (Functional Descriptions - F25 - Charging System, Anti-Theft, Body Electrical Systems) >> Body Electrical System - Functional Description >> Power Control Unit (PCU) >> System functions >> Functional networking, vehicle electrical system support

Functional networking, vehicle electrical system support

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The following graphics show the functional networking.

Fig 1: Vehicle Electrical System - Circuit Diagram
G09872904Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Jump start terminal point
2 Starter motor
3 Alternator
4 Crash Safety Module (ACSM)
5 Power Control Unit (PCU)
6 Digital engine electronics
7 Body Domain Controller
8 Power distribution box, right rear
9 Power distribution box, battery
10 Intelligent battery sensor
11 System battery
12 Safety battery terminal
13 Additional fuse carrier
14 Auxiliary battery