Check the regulation pressure with pump power
supply voltage higher than 12 V.
Regulation pressure = 300 - 320 kPa (3 - 3.2 BAR)
YES go to 4 NO go to 5
4 - The pressure regulator is efficient.
5 - Pressure too high
Check that the return duct is not clogged or
squashed
YES go to 6 NO go to 7
6 - Replace the pressure regulator.
7 - Pressure regulation too low
Start the pump rotation again. Using pliers with flat
and long tips, temporarily clamp the return duct by
the extension of the specific tool (the serial pipe
does not allow this operation).
fuel pressure = over 300 kPa (3 BAR)
YES go to 8 NO go to 9
8 - Replace the pressure regulator.
9 - Replace the fuel pump.
Fuel pump and filter check
This procedure is useful during maintenance to check the filter efficiency in delivery.
Connect the diagnostic tester.
Connect the fuel pressure check kit.
Specific tooling
020680Y Diagnosis Tool
020480Y Petrol pressure check kit
1 - Select the diagnostic tester menu on the «AC-
TIVE DIAGNOSIS» function.
Select the «PUMP DIAGNOSIS» function.
The pump starts for 30 seconds.
YES go to 2
Injection Beverly 500 i.e.
INJEC - 200
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