2. Measure the resistance between the valve contacts (figure 4A.23). Set value: 2.6-2.9 Ohm.
Figure 4A.23. Disconnect the wiring connector from the valve and measure the resistance between its contacts.
3. If the specified value is not achieved, replace the fuel pressure regulating valve.
4. If the specified value is reached, connect the VAG 1598/30 tester to the engine control unit wiring harness. Check the wires between the tester and the connector for continuity (figure 4A.22): pin 1 + socket 1/01, pin 2 + socket 3/38.
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5. Check the connector wires for short circuits, short circuits to the positive or negative battery terminals.
Set value: ∞ Ohm.
6. If there are no faults in the wires, replace the CDI injection system control unit.
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