display AUDI A4 1998 B5 / 1.G APB Engine Secondary Air System Workshop Manual

26-43

- Initiate output Diagnostic Test Mode (DTM) and
activate Secondary Air Injection (AIR) solenoid
valve -N112

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

Output Diagnostic Test Mode Secondary. air. inj. solenoid valve -N112

Indicated on display
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

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 44
- Repair open circuit or short circuit if necessary.
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