Example Of Abnormal Waveforms
NOTE:
- The size of the waveform patterns differs largely, depending on the adjustment of the variable knob on the oscilloscope.
- Identification of abnormal waveforms is easier when there is a large output current (regulator is not operating). (Waveforms can be observed when the headlights are illuminated).
- Check the conditions of the generator malfunction light (illuminated/not illuminated). Also, check the charging system totally.
| Abnormal waveform | Problem cause | |
|---|---|---|
| 2.4 L Engine | 3.0 L Engine | |
| Example 1 | Open diode | |
| Example 2 | Short in diode | |
| Example 3 | Broken wire in stator coil | |
| Example 4 | Short in stator coil | |