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Wiring Diagrams

Complex factory diagrams redrawn as simple pictures — with pin numbers and wire colours.

All Cars› General Guides› All years› Data Lines (CAN)
HL120 Ω(in a module)120 Ω(in a module)Engine ECUABS ECUMeterBody ECUOBD2 portpin 6 · pin 14Multimeter, battery OFF:6 ↔ 14 ≈ 60 Ω1234
All CarsGeneral GuidesAll years

CAN Bus Basics — CAN-H, CAN-L and the 60 Ω Test

How car computers talk on two wires, and how to test the CAN bus with a multimeter in 2 minutes.

Looking into the car's socket (front view)1234567891011121314151616 = Battery +12 V4, 5 = Ground6, 14 = CAN-H / CAN-L7, 15 = K-line / L-line2, 10 = J1850 busOthers = maker's own use
All CarsGeneral GuidesAll years

OBD2 Port Pinout — All 16 Pins Explained

Every pin of the OBD2 diagnostic socket: power, ground, CAN and K-line, with simple tests.