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SDS hints: Difference between revisions
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→Understanding the Relay Circuits
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** In normal mode, Pin 12 (Prim Bus) drives Pin 9 (Injector 1 - 3 positive side via individual breakers), and Pin 11 (Backup Bus) drives Pin 10 (Injector 4 - 6 positive side via individual breakers). | ** In normal mode, Pin 12 (Prim Bus) drives Pin 9 (Injector 1 - 3 positive side via individual breakers), and Pin 11 (Backup Bus) drives Pin 10 (Injector 4 - 6 positive side via individual breakers). | ||
** In the two failure modes, one of the buses drives all injectors | ** In the two failure modes, one of the buses drives all injectors | ||
* Passing through the primary / backup signals to mixture relay | * Passing through the primary / backup signals to the mixture relay | ||
** 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 | ||