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| Battery voltage at least 11.5 V |
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| All electric consumers, e.g.: lights and rear window heater must be switched off. |
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| If the vehicle is equipped with air conditioning, this must be switched off. |
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| Earth connection between engine (on gearbox bell housing) and body (below battery) OK. |
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| Earth connection in plenum chamber OK. |
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| The engine speed sender nust be in good working order, check → Chapter. |
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| The Hall sender must be in good working order; check → Chapter. |
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| The petrol pump relay must be in good state. |
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