volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Manufacturer's Scan Tool|Page 3800 > < With Manufacturer's Scan Tool|Page 3793
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EGR Control Solenoid: Testing and Inspection
Manufacturer's Scan Tool

EGR Vacuum Regulator solenoid valve, checking

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Disconnect 2-pin electrical connector from EGR valve (arrow).

Resistance, measuring

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Measure resistance between contact terminals of -N18- EGR Vacuum Regulator Solenoid Valve.
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Specification: 14.0 to 20.0  

Note:  At room temperature resistance is in the lower tolerance range. At operating temperature resistance is in the upper tolerance range.

If specification not obtained:
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Replace EGR Vacuum Regulator solenoid valve -N18-.

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Check DTC memory.

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Read readiness code.
If the DTC memory was erased or the engine control module is subject to low voltage with the ignition ON, reset the readiness code again.

If the specification was obtained:
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Check voltage supply of EGR valve

Voltage supply, checking

Manufacturer's Scan Tool|Page 3800 > < With Manufacturer's Scan Tool|Page 3793