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Description

The purpose of the Wastegate Frequency Valve is to control boost by controlling the control pressure of the blow off valve.

Part Number034 906 283 J3B
Part Number034 906 283 KABY

The picture below displays the WGFV and its position in the engine bay behind the headlamp on the drivers side (rhd).




Tests

1.To test the wgfv, unplug the connector (1) in the picture above
2.Measure resistance across the terminals on the valve. Must be 25 - 35 ohms
3.If resistance is outside this range, the wgfv should be replaced.
4.Re-attach the connector

1.To test activation of the wgfv, unplug the connector (1) above
2.Attach a test LED to connector contact 1 of the cable and earth.
3.Operate the starter for a few seconds. The test LED should light when the starter is turning.
4.If the LED does not light,
4.1 check fuse #24,#28
4.2 check connection from contact 1 to fuse #24 for o/c
4.3 check connection from fuse #24 to Fuel pump relay contact 59 for o/c
4.4 check connection from contact 1 to contact 37 of the ECU for o/c.

5. Check connection from contact 2 of connector to contact 23 of ECU for open circuit.
5b. Check connection from contact 2 of connector to contact 23 of ECU for short circuit to earth.