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Where is the diagnostic interface of BMW 5 Series located?

1 Answers

VonEmersyn

07/29/25 7:10pm

The diagnostic interface of BMW 5 Series is located around the area above the brake pedal, covered by a small panel. You can see it by opening the panel. Automotive diagnostic interface: The automotive diagnostic interface has a total of 16 pins, each representing different functions. Generally, pin 2 is the bus positive, pin 4 is the chassis ground, pin 5 is the signal ground, pin 7 is the K-line, pin 10 is the bus negative, pin 15 is the L-line, and pin 16 is only for power supply or detecting battery voltage and current. Diagnostic card: The diagnostic card, also known as PC-Analyzer or POST (Power-On-Self-Test) card, works by displaying the detection results of the self-test program in the motherboard's BIOS through codes. By referring to the code meaning quick reference table in this book, you can quickly identify the computer fault. Especially when the PC cannot boot the operating system, the screen is black, or the speaker does not sound, using this card can better demonstrate its convenience.

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