Checking the function and supply voltage |
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| Battery voltage at least 11,5 V. |
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| Fuel pump relay -J17 - O.K. |
Note The function of the fuel pump is tested with the actuator diagnosis. |
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| On the display press consecutively the buttons for „Vehicle self-diagnosis“,„01 - Engine electronics“ and „03 - Actuator diagnosis“. |
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| Press the right arrow button on the display in order to actuate the fuel pump relay -J17-. |
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| The fuel pump must be pulsed for start-up. |
Note The fuel pump runs very quietly. |
If the fuel pump does not run: |
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| Remove the cover from the fuel delivery unit. |
Note For vehicles with auxiliary heating, the plug connection for the dosing pump -V54- must be disconnected additionally. |
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