| Exhaust gas recirculation system |
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| In some cases, exhaust gases are added to the intake air by the exhaust gas recirculation valve -N18- . This mixture reduces the temperature in the combustion chamber, thus contributing to improve the composition of the exhaust gases. |
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| The engine control unit manages the activation of the exhaust gas recirculation valve -N18- . |
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| Thanks to the pulsed activation, the valve may be put in any position. |
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| The potentiometer for exhaust gas recirculation -G212- sends the position of the exhaust gas recirculation valve -N18- to the engine control unit. The valve and the potentiometer are part of the same component. |
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| If the exhaust gas recirculation valve -N18- is open and blocked, poor engine operation will be noted at idle speed. |
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