audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Removing and installing glow plugs > < Checking operation

A4 Mk1

Checking glow plugs
Checking glow plugs
Test condition
l  Battery voltage at least 11.5 V
–  Switch off ignition.
–  Detach glow plug connectors from glow plugs.
–  Connect voltage tester -V.A.G 1527B- to battery (+) and place on each glow plug in turn.
t  If diode lights up: glow plug OK.
t  If diode does not light up: fit a new glow plug → Chapter.
   

Removing and installing glow plugs > < Checking operation