relay AUDI A4 2000 B5 / 1.G APB Engine Secondary Air System User Guide

26-51

Check voltage supply of the Secondary Air
Injection (AIR) pump motor

- Remove connector for Secondary Air Injection
(AIR) pump motor -V101-.

- Connect VAG 1527B voltage tester between
terminals 1 and 2

- Initiate output Diagnostic Test Mode (DTM) and
activate Secondary Air Injection (AIR) pump
relay -J299-.

Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel
Injection & Ignition, Engine Code(s): APB, Repair Group 01



LED must blink
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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

26-52
If LED does not blink:

- Perform following tests marked with dots:

Check wire connection from connector at
Secondary Air Injection (AIR) pump motor-
V101- to Secondary Air Injection (AIR) pump
relay -J299- (in 3-socket relay carrier in E-
Box, plenum chamber, position 2) for open
circuit.

Electrical Wiring Diagrams, Troubleshooting &
Component Locations

Check wire connection from connector at
Secondary Air Injection (AIR) pump motor -
V101- to Ground (GND) connection 1 in
engine compartment wiring harness for open
circuit:

Electrical Wiring Diagrams, Troubleshooting &
Component Locations
If no malfunctions are detected:

- Replace Secondary Air Injection (AIR) pump
motor -V101-.
Pa
ge 25 of 29 Secondar
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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