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Oscillogram For A Faulty Alternator:

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2006 BMW 760i, 2006 BMW 760Li, 2005 BMW 760i, 2005 BMW 760Li, and 2004 BMW 760i. However, it is still accessible from the selected car via links, so may be relevant.

One phase interrupted.

Repair/exchange alternator.

Fig 1: Oscillogram For A Faulty Alternator (One Phase Interrupted)

G03292183

Courtesy of BMW OF NORTH AMERICA, INC.

Interturn fault.

Repair/exchange alternator.

Fig 2: Oscillogram For A Faulty Alternator (Interturn Fault)

G03292184

Courtesy of BMW OF NORTH AMERICA, INC.

Open circuit in negative diode.

Repair/exchange alternator.

Fig 3: Oscillogram For A Faulty Alternator (Open Circuit In Negative Diode)

G03292185

Courtesy of BMW OF NORTH AMERICA, INC.

Short circuit in positive diode.

Repair/exchange alternator.

Fig 4: Oscillogram For A Faulty Alternator (Short Circuit In Positive Diode)

G03292186

Courtesy of BMW OF NORTH AMERICA, INC.

Open circuit in positive diode.

Repair/exchange alternator.

Fig 5: Oscillogram For A Faulty Alternator (Open Circuit In Positive Diode)

G03292187

Courtesy of BMW OF NORTH AMERICA, INC.

Open circuit in exciter diode.

Repair/exchange alternator.

Fig 6: Oscillogram For A Faulty Alternator (Open Circuit In Exciter Diode)

G03292188

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME/DDE.