Audi Workshop Service and Repair Manuals

Test conditions

• ● Battery voltage at least 11.5 V

• ‒ Switch off ignition.
• ‒ Pull glow plug connector off glow plug.
• ‒ → Connect diode test lamp wire using auxiliary clips from auxiliary cable set to battery positive (+).
• ‒ Place diode test lamp probe on each glow plug one after the other.

• If diode lights up: glow plug OK.
• If diode does not light up: fit a new glow plug

• ‒ Remove and install glow plugs with jointed spanner 3220.

• Tightening torque: 15 Nm