Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Power unit | Direct injection and glow plug system with distributor pump as of 10.99 | Ignition system, glow plug system | Checking glow plug system

Checking glow plugs

Special tools and workshop equipment required

t	U/J extension and socket, 10 mm -3220-

t	Adapter set -V.A.G 1594C-

t	Voltage tester -V.A.G 1527B-

Test prerequisites

l	Fuse box/battery glow plug strip fuse OK

l	The battery voltage must be at least 11.5 V.

l	All electrical consumers, e.g. lights and rear window heating, must be switched off.

Test procedure

–	Pull glow plug connectors from glow plugs.

–	Connect voltage tester -V.A.G 1527B- cable to battery positive (+), using clips from auxiliary measuring set -V.A.G 1594C-.

–	Place test probe of voltage tester -V.A.G 1527B- on each glow plug one after the other.

LED lights up: Glow plug OK.

If LED does not light up: fit a new glow plug

–	Remove and install glow plugs with U/J extension and socket, 10 mm -3220-.

Specified torque: 15 Nm.

Volkswagen Workshop Service and Repair Manuals