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HOMESERVICE MANUALSAUDI2004A4 SEDAN (8E2) L4-1.8L TURBO (AMB)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL TESTINGWITH GENERIC SCAN TOOLSCAN TOOL CONNECTING AND INITIAL CHECKS
2004 Audi A4 Sedan (8E2) L4-1.8L Turbo (AMB)

Scan Tool Connecting and Initial Checks

2004 Audi A4 Sedan (8E2) L4-1.8L Turbo (AMB)SECTION Scan Tool Connecting and Initial Checks



Connect diagnostic tester

Special tools and equipment







- Vehicle Diagnostic and Information System VAS 5052 with diagnostic wire VAS 5052/3

Test requirements:
- Fuses for engine electronics
- Ground (GND) connections at engine and transmission OK
- Battery voltage at least 12.7 V
- Parking brake engaged.
- Vehicles with automatic transmission: Selector lever in position "P" or "N".
- Electrical consumers switched off (radiator fan must NOT run during test).
- A/C switched off.

Work procedure
- Switch ignition off.







- Connect Vehicle Diagnostic and Information System VAS 5052 with diagnostic wire VAS 5052/3.


CAUTION: Observe safety precautions.


Depending on the desired mode "Selectable diagnostic modes" table

- Switch ignition on.

or

- Start engine.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.