Audi AMB Service Manual page 308

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Fig. 403: Identifying Secondary Air Pump Relay Terminals
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Connect voltage tester VAG1527B as follows:

3-way relay carrier in electronics box in plenum
chamber, position 2, contact
Start output Diagnostic Test Mode and actuate Secondary AIR pump relay J299.

LED must flash

If LED does not flash:
Switch off ignition.

Connect test box VAG1598/31 to engine control module wiring harness. Engine control module must not

be connected: --> 24 - MULTIPORT FUEL INJECTION (MFI)
Fig. 404: Identifying Secondary Air Pump Relay Terminals
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Check for open circuit and short to Ground/positive in following wiring connection:

2005 Audi A4 Quattro
6
1:01:36 AM
Measure to
Engine Ground
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