Page 5 of 135
24-5
Safety precautions
WARNING!
Fire hazard! Do not smoke, work near heaters
or open flame, or have anything nearby that
could ignite fuel. The fuel system is under
pressure. Before opening, cover connections
with a rag, and open carefully to release
pressure. Be alert when working on or near
the engine and ignition wires. High secondary
ignition voltage can cause serious personal
injury and damage vehicle components.
DO NOT touch or disconnect ignition system
wires when the engine is running or being
cranked at starting RPM.
DO NOT operate starter if fuel injectors are
removed.
Be sure the ignition is switched OFF, when:
Disconnecting or connecting the battery,
ignition wires, or test equipment leads
Disconnecting fuel injection system wiring
Washing the engine or engine
compartment.
Pa
ge 5 of 135 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.24.1
Page 124 of 135
24-91
Fuel injectors, checking for leakage
WARNING!
The fuel system is under pressure! Before
loosening hoses or opening the test
connection, cover the connection with a rag.
Only then, open carefully to slowly release
pressure.
Required special tools and test equipment
VW 1594 connector test kit
VAG 1630 digital potentiometer
VAG 1602 fuel analyzer
Checking
- Disconnect harness connector for Camshaft
Position (CMP) sensor -G40-.
- Disconnect vacuum hose from fuel pressure
regulator.
- Remove fuel rail together with fuel injectors.
Pa
ge 124 of 135 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.24.1
Page 128 of 135
WARNING!
The fuel system is under pressure! Before
loosening hoses or opening the test
connection, cover the connection with a rag.
Only then, open carefully to slowly release
pressure.
Pa
ge 128 of 135 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.24.1
