Volkswagen Fox 2004 Workshop Manual page 100

Fox 2004 ➤
3 - Cyl. diesel engine - Edition 02.2009
– Connect Auxiliary pump tester -VAS 5187- , as shown.
– Start engine and run at idle speed.
– Connect the Diagnosis, Measurement and Information Sys‐
tem -VAS 5051A/52- and select the operation mode
. Then, select engine electronic control unit
self-diagnosis
with
01 Engine electronic system
– Select function
08 Read value block
– Select screen "2" via numeric keys (on keyboard) and confirm
with key.
Q
– Read engine idle speed on field 1.
– Increase engine speed to 1,500 rpm.
– Check pressure on the pressure gauge. Specification: at least
3.5 bar.
– Press the key.
←
– Select function
06 End the test
– Switch off ignition.
If the specification is not obtained:
– Replace auxiliary pump
Note
After removing pressure gauge unit, tighten plug at 25 Nm. Al‐
ways replace seal.
96
Rep. Gr.20 - Supply system - Fuel tank, fuel pump
.
.
function key.
⇒ page 97 .
Vehicle