Sep 17
Phenomenon of failure: an Isuzu car ignition switch is closed, the meter showed normal, but the charging indicator does not shine, and put the ignition switch file Ⅱ (start-file), admission to the labor .
Troubleshooting: Check the charge indicator, charging indicator light indicates normal. As the car charging indicator light by the combination of relay control, whether the combination of relay submitted for inspection, but could not find the problem.
Combination diagram relay lights wiring circuit of the car, we can see that if the engine does not turn the ignition switch I closed a file or Ⅱ, the charging indicator will be illuminated by the power even the battery current of positive charge → → Ignition Switch LED charge indicator → Combination relay normally closed relay contacts → Datie. After the ignition switch in a closed car charging light does not shine through the analysis that should be borne direct contacts normally closed relay caused by the decoupling suspects so charging time relay indicator a supply terminal voltage. The car charging relay termination strength indicator in the next column IG alternator, so remove the inspection of decomposition of the alternator when it is recognized that the alternator is being rectified with a diode board was short circuit failure. Replacing the diode, troubleshooting.
Board Alternator diode rectifier is a short breakdown of the battery current will be the alternator B + induced short circuit diode in the next column → → AC generator, IG → next column charge indicator relay coil → Datie, electrical charge has been responsible for relaying the initiatives to open its regular intake of close contacts, which not only closed the charging indicator light also cut the loop Datie Datie relay circuit mode, so the closure that the ignition switch, the above failures occur.
Be noted that: The short-circuit because of the breakdown diode driver of the vehicle had been mistakenly reversed the polarity of the batteries, causing the battery without any charge flowing through the exchange of the situation caused by a generator rectifier diodes.
Troubleshooting: Check the charge indicator, charging indicator light indicates normal. As the car charging indicator light by the combination of relay control, whether the combination of relay submitted for inspection, but could not find the problem.
Combination diagram relay lights wiring circuit of the car, we can see that if the engine does not turn the ignition switch I closed a file or Ⅱ, the charging indicator will be illuminated by the power even the battery current of positive charge → → Ignition Switch LED charge indicator → Combination relay normally closed relay contacts → Datie. After the ignition switch in a closed car charging light does not shine through the analysis that should be borne direct contacts normally closed relay caused by the decoupling suspects so charging time relay indicator a supply terminal voltage. The car charging relay termination strength indicator in the next column IG alternator, so remove the inspection of decomposition of the alternator when it is recognized that the alternator is being rectified with a diode board was short circuit failure. Replacing the diode, troubleshooting.
Board Alternator diode rectifier is a short breakdown of the battery current will be the alternator B + induced short circuit diode in the next column → → AC generator, IG → next column charge indicator relay coil → Datie, electrical charge has been responsible for relaying the initiatives to open its regular intake of close contacts, which not only closed the charging indicator light also cut the loop Datie Datie relay circuit mode, so the closure that the ignition switch, the above failures occur.
Be noted that: The short-circuit because of the breakdown diode driver of the vehicle had been mistakenly reversed the polarity of the batteries, causing the battery without any charge flowing through the exchange of the situation caused by a generator rectifier diodes.