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| Re display fields 1 and 2: |
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| Low readouts indicate that the engine is running too rich and the lambda control therefore produces a leaner mixture. |
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| High readouts mean that the engine is running too lean and the lambda control therefore produces a richer mixture. |
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| If the control unit is dead all initialisation values are reset. |
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| Condition for part load learning. Coolant temperature at least 75 °C, intake air temperature max. 90 °C, normal driving |
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| add = additive - The effect of the fault (e.g. unmetered air) becomes increasingly less as engine speed rises. In the case of an additive initialisation value the injection period is changed by a fixed rate. This rate is independent of the basic injection period. |
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| mul = multiplicative - The effect of the fault (e.g. faulty injector) becomes greater as engine speed rises. The multiplicative learned value is a percentage change in the injection period. This change is dependent on the basic injection period. |
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