Injectors
| Injectors |
The injectors are of solenoid type with needle and seat. They open when a current flows through the coil and are closed by a powerful spring when the current is cut.
In order to achieve the best possible emission control and drivability, the injectors are fixed by the fuel rail so that the jets of fuel do not strike the walls of the intake manifold.
The injectors are supplied with current from the main relay, while the control module grounds them as follows:
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Injector 1 is controlled from pin 45.
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Injector 2 is controlled from pin 44.
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Injector 3 is controlled from pin 67.
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Injector 4 is controlled from pin 68.
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Injector 5 is controlled from pin 21.
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Injector 6 is controlled from pin 20.
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The microprocessor controls the transistor in the firing order so that injection is completed just as the inlet valve in the cylinder in question opens.
| Diagnostics |
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If a break or short-circuit to ground or B+ occurs for
any
injector, diagnostic trouble code P1676 will be generated.
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Closed loop is blocked.
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