Reconnect all disconnected fuel hoses.
Connect the multimeter VAG 1715 using current clamps to the wire of the 4-pin plug pin 1 (pic. 2.318) from the wiring harness to the right hand fuel delivery module.
Start the engine and leave to idle.
Measure the power consumption of the fuel pump. Set value: max. 11 A.
If the current consumption is greater than the specified value, the right fuel pump is faulty, the fuel delivery module must be replaced.
In the same way, check the left fuel delivery module.
If the consumed current is greater than the specified:
The left fuel pump is faulty, the fuel delivery module should be replaced.
NOTE: If the error in the power system appears only from time to time, then the check can also be carried out during a test drive, however, a second person is required for this.
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