Audi AMB Service Manual page 246

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Fig. 321: Identifying Connector Terminals 1 And 4
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Connect multimeter and measure voltage between contacts 1 and 3 of connector.

Switch on ignition.
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Specification: approx. 5 V
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If reading does not match specification:
Fig. 322: Connecting Test Box VAG1598/31 To Engine Control Module Wiring Harness
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Connect test box VAG1598/31 to engine control module wiring harness. Engine control module must

also be connected. --> 24 - MULTIPORT FUEL INJECTION (MFI)
2005 Audi A4 Quattro
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