fuse AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System Workshop Manual
Page 11 of 29
26-41
Checking voltage supply
- Disconnect connector from Secondary Air
Injection (AIR) solenoid valve -N112-.
If LED does not light: - Connect VAG 1527B voltage tester as follows:Harness connector terminal
Measure to
1 Engine Ground (GND)
- Operate starter briefly.
LED must light.
- Perform following tests marked with dots:
Check fuse -S234- (in fuse holder, position 34).
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Page 12 of 29
26-42
Electrical Wiring Diagrams, Troubleshooting & Component Locations
Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition,
Engine Code(s): APB, Repair Group 24
Checking activation
Check wire connection from terminal 1 of connector via fuse -S234-
(in fuse holder, socket 34) to Fuel Pump (FP) relay for open circuit: Check Fuel Pump (FP) relay.
- Connect VAG 1527B voltage tester between terminal 1 and 2.
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Page 18 of 29
26-47
Checking voltage supply of Secondary Air
Injection (AIR) pump relay
- Switch ignition off.
- Remove Secondary Air Injection (AIR) pump
relay
- Connect multimeter for voltage measurement as
follows.
3-socket relay carrier in E-box,
plenum chamber, position 2
terminal
Measure to
8 Engine
Ground
(GND)
Specification: approx. battery voltage
If specified value is not obtained:
- Perform following tests marked with dots:
Check fuse -S130- (40 A) in 3-socket relay carrier in E-Box, plenum
chamber, position 7.
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11/21/2002 htt
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Page 20 of 29
26-48
- Connect multimeter for voltage measurement as
follows:
3-socket relay carrier in E-box,
plenum chamber, position 2
terminal
Measure to
4 Engine
Ground
(GND)
- Operate starter briefly.
Specification: approx. battery voltage
If specified value is not obtained:
- Perform following tests marked with dots:
Electrical Wiring Diagrams, Troubleshooting & Component Locations Check fuse -S234- (in fuse holder, position 34). Check wire connection from Secondary Air Injection (AIR) pump relay
-J299- (in 3-socket relay carrier in E-box, plenum chamber) via fuse -
S234- (in fuse holder, position 34) to Fuel Pump (FP) relay for open
circuit:
Pa
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ystem
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE05.26.2