audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Removing and installing fuel delivery unit > < Checking fuel pump (electrical test)

A4 Mk2

Checking low fuel level senderG210
Checking low fuel level sender -G210-
Special tools and workshop equipment required
   
t  Hand-held multimeter -V.A.G 1526C-
  W00-10311
t  Auxiliary measuring set -V.A.G 1594C-
Procedure
Saloon:
–  Detach trim in luggage compartment.
–  If necessary, fold forward right backrest of rear seat bench.
Avant:
–  Remove left-side section of backrest (1/3 section) → Rep. Gr.72.
–  Remove left-side trim in luggage compartment and anti-soiling tray → Rep. Gr.70.
  W00-10008
All models:
–  Unscrew cover for flange -arrows-.
  A20-0774
–  Unplug electrical connector -2- at flange.
  Note
Disregard -item 1-.
  A20-0880
–  Connect hand-held multimeter -V.A.G 1526C- to measure resistance between contacts -1- and -2-.
l  Fuel level in baffle housing OK: specification approx: 430 Ω
l  Fuel level in baffle housing too low: specification approx. 100 Ω.
  Note
t  If the resistance is 0 Ω, there is a short circuit. If the resistance is ∞ Ω, there is an open circuit in the wiring.
t  To check the two resistance values, remove fuel delivery unit → Chapter. Measure resistance values with fuel delivery unit in normal position and turned upside down.
t  Sender for low fuel level -G210- cannot be renewed separately.
  A20-0882

Removing and installing fuel delivery unit > < Checking fuel pump (electrical test)