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Home >> Volkswagen >> 2004 >> Passat Sedan (3B3) L4-1.8L Turbo (AWM) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Recirculating Valve For Turbocharger, Checking >> With Generic Scan Tool
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With Generic Scan Tool



Recirculating Valve For Turbocharger (Vehicles With Engine Code ATW, AUG, AWM), Checking

Valve opens between connection to intake manifold and connection to deceleration shut-off valve with no voltage. Connection to vacuum reservoir is closed.

Test sequence
- Switch ignition off.
- Disconnect connector from Recirculating valve for turbocharger -N249-.







- Measure resistance between terminals of valve.
Specified value: 25 to 35 ohms

If specified value is not obtained:
- Replace Recirculating valve for turbocharger -N249-.

If specified values are obtained:
- Connect test box to control module wiring harness, connect test box for wiring test. Test Box, Connecting For Wiring Test







- Check wire between test box socket 105 + 2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max: 1.5 ohms
- Check the wire for short circuit to B+ and Ground (GND).

If no malfunctions are found in wire:
- Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max: 1.5 ohms

If no malfunctions are found in wires:
- Replace Engine Control Module (ECM).
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