Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1999A6 BASEREPAIR AND DIAGNOSISELECTRICALCHARGING SYSTEMSGENERATORS & REGULATORSBENCH TESTINGDIODE ASSEMBLY
1999 Audi A6 Base
Diode Assembly
1999 Audi A6 BaseSECTION Diode Assembly
- Set ohmmeter on 100x scale. Connect ohmmeter leads between generator output terminal and each 3 stator terminals, in turn. See Fig 1 . Reverse ohmmeter leads. If ohmmeter indicates continuity in only one direction, go to next step. If ohmmeter indicates continuity in both directions, replace diode assembly.
- Connect ohmmeter leads between negative plate and each 3 stator terminals, in turn. Reverse ohmmeter leads. If ohmmeter indicates continuity in only one direction, go to next step. If ohmmeter indicates continuity in both directions, replace diode assembly.
- Connect ohmmeter leads between Blue (D+) wire terminal and each 3 stator terminals, in turn. Reverse ohmmeter leads. If ohmmeter indicates continuity in only one direction, diode assembly is okay. If ohmmeter indicates continuity in both directions, replace diode assembly.
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.