volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Wastegate Actuator: Testing and Inspection
With Manufacturer's Scan Tool

Wastegate Bypass Regulator valve -N75-, checking

-

Switch ignition off.

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Disconnect Wastegate Bypass Regulator valve.

-

Measure resistance between valve terminals.

Engine code ALH
Specification: 14 to 20 Ohms

If specification not obtained:
-

Replace Wastegate Bypass Regulator valve -N75-.

If specification obtained:
-

Switch ignition on.

-

Measure supply voltage at valve connector terminal 1 and at engine Ground.
Specification: approximately battery voltage

If specification not obtained:
-

Switch ignition off.

-

Connect test box VAG 1598/22 to ECM wiring harness.

-

Check wiring for open circuit between Test Box and harness connector using Wiring diagram.
Up to MY 1999
^

Terminal 1 + sockets 2 + 28

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