3,777
edits
SDS hints: Difference between revisions
m
→Understanding the Relay Circuits
| Line 24: | Line 24: | ||
** The primary select signal (active low) is passed through as mixture blue signal. | ** The primary select signal (active low) is passed through as mixture blue signal. | ||
** The backup select signal (active low) is passed through as mixture brown signal. | ** The backup select signal (active low) is passed through as mixture brown signal. | ||
Note: Activating both primary and secondary select signal will mirror the sides, e.g. the backup bus and ECU drives injectors 1-3 and vice versa | Note: Activating both primary and secondary select signal will mirror the sides, e.g. the backup bus and ECU drives injectors 1-3 and vice versa<br> | ||
The mixture adjust relay box includes the following functions: | |||
* Feeding the mixture adjust potentiometer input to both ECUs in normal mode and only to one accordingly in primary and backup mode. | |||
Note: The mixture adjust relay box needs both 5V and 12V to operate. It gets the 5V from the ECUs (red primary cable or orange secondary cable) and the 12V from the yellow cable (needs to be supplied externally, switched and fused). | |||