You will need
  • - ohmmeter,
  • - indicator light
  • - insulated wire – 1 m.
In cases of malfunctions related to the production of the generator the charging current, diagnostic checks, among other things, the operation of the diode bridge.
To perform this check, without removing the generator, enough to power off the on-Board network from the battery.
Diode test to determine their short-circuit begins with a voltage supply with pigtail attached at one end to the positive battery terminal and the other to the generator to terminal "30". The control light is switched between the generator housing to the negative terminal of the battery.
If the test light is on, it indicates a short circuit diode, therefore, the generator must be removed from the engine for execution of repair, which reduces to the replacement of the diodes separately, or the diode bridge as a whole.