Volkswagen Passat 1995 Official Factory Repair Manual page 455

Exhaust Gas Recirculation (EGR) system
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Exhaust Gas Recirculation (EGR)
valve and EGR temperature sensor,
checking
Vehicles up to 07.95 only
Checking activation of the EGR valve N18:
Repair Manual, 2.0 Liter 4-Cyl. 2V Fuel
Injection & Ignition, Engine Code(s): ABA m.y.
1995, Repair Group 01
Special tools, testers and auxiliary items
VAG 1551 Scan Tool (ST) with VAG
1551/3 adapter cable
US 8026 hand vacuum pump
VAG 1598/18 test box
VW 1594 connector test kit
Multimeter (Fluke 83 or equivalent)
Test conditions
No leaks in vacuum lines and hose
connections
Vacuum lines not blocked or kinked
Engine oil temperature at least 50 C
(122 F)
VAG 1551 scan tool connected; "Engine
Electronics" address word 01, "Read
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