volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

EGR Frequency Valve <--> [EGR Control Solenoid]|Specifications|Page 3298 > < EGR Frequency Valve <--> [EGR Control Solenoid]|Specifications|Page 3296
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EGR Frequency Valve: Testing and Inspection

PRE-TEST REQUIREMENTS

Engine coolant temperature at least 176°F (80°C) 
All electrical consumers (including A/C) switched OFF.
Radiator fan must not run while performing tests
Vacuum connections tight and without leaks
Vacuum hoses not pinched or plugged

TOOL REQUIREMENTS

Digital Volt/Ohm Meter (DVOM)
Test Connector kit  VW 1594 or Equivalent
Refer to Tools and Equipment for test equipment specifications.

TEST PROCEDURE

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Ignition switch OFF.

EGR System

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Disconnect EGR frequency valve harness connector.Mounted on the back of the intake manifold.

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Using DVOM check resistance between frequency valve terminals.

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Must be 25 - 35 ohms

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IF NOT replace EGR frequency valve

EGR Frequency Valve <--> [EGR Control Solenoid]|Specifications|Page 3298 > < EGR Frequency Valve <--> [EGR Control Solenoid]|Specifications|Page 3296