volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Pressure Regulator Valve, Checking|Page 1974 > < Fuel Pressure Regulator Valve, Checking|Page 1972
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Switch ignition on.

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Check voltage supply between connector terminals - 3 - and -  4 - using voltage tester (VAG 1527B).  Light Emitting Diode (LED) must light up.

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Switch off ignition.

LED Does Not Light Up

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Locate and repair open circuit in wiring using wiring diagram, refer  to.

LED Lights Up (Voltage Supply OK)

CAUTION!
Fuel supply line is under pressure! Wear protective goggles and protective  clothing to prevent injuries and contact with skin. Before
removing from hose  connection wrap a cloth around the connection. Then release pressure by carefully  disconnecting hose connection.

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Remove fuel supply line - 1 -, auxiliary heater fuel  line - 2 -, fuel pump connector - 3 - and vent  line - 4 -.

Fuel Pressure Regulator Valve, Checking|Page 1974 > < Fuel Pressure Regulator Valve, Checking|Page 1972