In the process of fault detection and elimination of the electronic control system, the electronic control unit (ECU), the core of the electronic control system, is equivalent to a black box, and only the port and wiring harness are connected with the outside world. It is very important to quickly query the pins related to ECU port and harness destination. I. A 16 Pin Layout for System Entry and Startup A 16* 1B Notes: 8~ 10, 13, 18, 23, 24, 27, 3/. Pin layout of A 16*2B [Note: pins 1, 4 and 16 are not occupied. Pin layout of A 16*3B [Note: pins 1~3,1~16 and 24~26 are not occupied. Ii. pin layout of A6500* 1B of A7 transfer box [note: pins 4, 5 and 8 are not occupied. Three. Pin layout of A58* 1B pin space module Note: 1, 2, 4, 6, 8, 9,1,14~ 16, 19. Pin layout of A58*2B [Note: pins 1, 20,21,26,27,29,31,33,34,36,38,45,46,48,49 are not occupied. A58*3B pin layout [Note: 2, 7, 28, 30 and 3 1 pins are not occupied. Four. Pin layout A98 * 1B[ Note: 3-7,/kloc-0-12, 14 pins are not occupied. Pin layout of A98*2B [Note: pins 1 and 3 are not occupied. V-Pin Arrangement A46* 1B Pin layout of electronic servo control system of digital engine Note: 5, 6, 9, 10, 14, 17,/kloc-9 ~ 21,23, 30. A46*2B Pin Layout Note: Pin 8, 19, 28, 33, 34, 44, 46~49 are not occupied.