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 MANUALSBMW2006760IREPAIR AND DIAGNOSISELECTRICALCHARGING SYSTEMSGENERATORS & REGULATORSTESTINGGENERATORTESTING WITH DIS TESTER
2006 BMW 760i
Testing With DIS Tester
2006 BMW 760iSECTION Testing With DIS Tester
- Check for correct corrections on charged battery, generator and starter motor. Make sure of good ground connection between engine and body. Make sure of good tension on ribbed V-belt.
- Read out DME/DDE fault memory.
- Connect diagnosis tester. Search down in the following menus:
- FUNCTION SELECTION
- COMPLETE VEHICLE
- DRIVE
- VOLTAGE AND CURRENT REGULATION
- VOLTAGE AND CURRENT GENERATION
GENERATOR OSCILLOGRAMS
| Fault | Oscillogram |
|---|---|
| Fault-Free | See Fig 1 |
| One Phase Interrupted | See Fig 2 |
| Internal Fault | See Fig 3 |
| Open Circuit In Negative Diode | See Fig 4 |
| Short Circuit In Positive Diode | See Fig 5 |
| Open Circuit In Positive Diode | See Fig 6 |
| Open Circuit In Exciter Diode | See Fig 7 |
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.