Checking Fuel Pressure - Volkswagen Amarok 2011 Workshop Manual

Amarok 2011 ➤
4-cylinder injection engine (2.0 l direct injection engine, turbocharger) - Edition 02.2011
– First ensure that 5-pin wiring connection -1- is secure by pull‐
ing the connector without pressing the catch. If connector was
not inserted correctly, repeat functional check of fuel pump.
– Pull off connector -1-.
– Check contacts on plug and on fuel delivery unit for damage.
– Check voltage supply against current flow diagram with mul‐
timeter -V.A.G 1715- .
• Specification: approx. battery voltage.
WARNING
Fuel supply lines are under pressure! Wear eye protection and
protective clothing to avoid eye injuries and skin contact. Be‐
fore loosening hose connections, wrap a cloth around the
connection. Then release pressure by carefully pulling hose off
connection.
Voltage supply not OK:
– Locate and eliminate open circuit referring to current flow di‐
agram ⇒ Current flow diagrams, Electrical fault finding and
Fitting locations.
Voltage supply OK:
– Remove fuel delivery unit
– Check that electrical wires between flange and fuel pump are
connected.
If no open circuit can be found:
– Fuel pump is defective, renew fuel delivery unit
2.1.2

Checking fuel pressure

Test prerequisites
• Function of fuel pump has been checked
Test procedure
Note
Check fuel pressure using final control diagnosis.
WARNING
Fuel supply lines are under pressure! Wear eye protection and
protective clothing to avoid eye injuries and skin contact. Be‐
fore loosening hose connections, wrap a cloth around the
connection. Then release pressure by carefully pulling hose off
connection.
164
Rep. gr.20 - Fuel supply system
⇒ page 172 .
⇒ page 172
⇒ page 162
.
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