wiring AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual
Page 29 of 37
21-24
If LED does not light:
- Check wire connection from terminal 1 to Fuel
Pump (FP) relay via fuse for open circuit.
Electrical Wiring Diagrams, Troubleshooting &
Component Locations
- Repair open circuit if necessary.
If wire connection is OK:
- Check Fuel Pump (FP) relay.
Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel
Injection & Ignition, Engine Code(s): APB, Repair Group 24
If LED lights:
- Check activation, Page 21
-25
.
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ystem with turbochar
ger
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p://127.0.0.1:8080/audi/servlet/Dis
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Page 30 of 37
21-25
Checking activation
Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition,
Engine Code(s): APB, Repair Group 01
If LED does not blink or if it remains constantly lit:
Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition,
Engine Code(s): APB, Repair Group 24
- Connect VAG 1527B voltage tester to connector terminals 1 (B+) and
2.
- Initiate output Diagnostic Test Mode (DTM) and activate recirculating
valve for turbocharger -N249-.
LED must blink.
- Connect VAG 1598/31 test box at wiring harness to ECM. Do not
connect ECM.
- Check the following wire connections for open circuit and short circuit
to Ground (GND) and B+: Harness connector terminal
VAG 1598/31 test box
Bushing
2 9
- Repair open circuit or short circuit if necessary.
Pa
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ge air s
ystem with turbochar
ger
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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Page 35 of 37
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
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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
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pair&id=AUDI.B5.GE05.21.1