21-29
Checking voltage supply
- Switch ignition off.
- Remove engine cover (arrows).
- Disconnect connector at charge air pressure sensor.
If specified value is not obtained: - Connect multimeter between terminal 1 and 3 of harness connector for
voltage measurement.
- Switch ignition on.
Specification: about 5 V
Pa
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.GE05.21.1
21-30
- Connect VAG 1598/31 test box to wiring
harness for Engine Control Module (ECM), also
connect ECM -1-.
Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel
Injection & Ignition, Engine Code(s): APB, Repair Group 24
If the specified value is met: - Check the following wire connections for open circuit and short circuit
to Ground (GND) and B+: Harness connector terminal
VAG 1598/31 or test box
Bushing
1 108
3 98
- Repair open circuit or short circuit if necessary.
- Check signal wire, Page 21
-31
.
Pa
ge 35 of 37 Char
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ystem with turbochar
ger
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE05.21.1
21-31
Checking signal wire
- Disconnect harness connector at charge air
pressure sensor.
- Connect multimeter to socket 101 and socket
108 of test box for voltage measurement.
- Start engine and run at idle.
Specification: about 1.90 V
- Bring engine to RPM by depressing pedal
suddenly.
Specification: approx. 2.00 ... 3.00 V
Pa
ge 36 of 37 Char
ge air s
ystem with turbochar
ger
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE05.21.1
