Vehicle Diagnostic Tester; Test Sequence - Volkswagen CC 2012 Workshop Manual

CC 2012 ➤ , Passat 2011 ➤ , Passat Variant 2011 ➤
Fuel supply system, petrol engines - Edition 05.2019
♦ Adapter set - V.A.G 1594C-

♦ Vehicle diagnostic tester

Test conditions:
• Battery voltage must be at least 11.5 V. If necessary, charge
battery ⇒ Electrical system; Rep. gr. 27 ; Battery; Charging
battery .
• Fuse for fuel pump control unit - J538- OK ⇒ Current flow di‐
agrams, Electrical fault finding and Fitting locations.
• Fuel pump control unit - J538- OK ⇒ Vehicle diagnostic tester.

Test sequence

Note
Function of fuel pump is checked using final control diagnosis.
– Connect vehicle diagnostic tester .
– Connect diagnosis cable connector to diagnostic connection
in driver footwell.
– Switch on ignition.
– Press one after the other in the display the buttons for
,
self-diagnosis Engine electronics
.
trol diagnosis
The fuel pump must now run slowly up to maximum speed.
Note
♦ The fuel pump runs very quietly.
If the final control diagnosis is carried out several times in suc‐
♦
cession, it may be necessary to start the engine briefly before
repeating the final control diagnosis.
– Switch off ignition.
If fuel pump does not run:
– Remove bench seat ⇒ General body repairs, interior; Rep. gr.
72 ; Rear seats; Removing and installing bench seat/individual
seats .
– Guide carpet out and fold upwards, if fitted.
74
Rep. gr.20 - Fuel supply system
Vehicle
and
Final con-