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| Connect test instrument adapter/DSO (5-pin) -VAS 5565- to connector and fuel delivery unit. |
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| Connect pick-up clamp -A- to red terminal with lettering „pick-up clamp“ for test instrument adapter/DSO (5-pin) -VAS 5565-. |
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| Start engine and run at idling speed. |
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| Measure current draw of fuel pump. |
l
| Specification: max. 9 amps. |
Note t
| The starting current for the fuel pump can lie briefly above specifications when starting the engine. |
t
| If the fault in the fuel system is not always evident, the check can also be carried out during a road test. A 2nd person is required to do this, however. |
If the current draw is exceeded: |
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| Fuel pump defective, renew fuel delivery unit → Chapter. |
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