aHow to quickly determine the electronic ignition (also known as ignition amplifier) failure, is a difficult
technical problems. Electronic ignition circuit complexity, models of different lines are different. During the
test, the slightest mistake, you may burn ignition, causing irreversible damage.
The following pilot light with electronic ignition failure quickly determine the method is based on years of
experience in maintenance of imported cars summed up, practice proved that this method is simple, practical, safe
and good. Electronic ignition basic circuit shown in Figure 1, the internal main switch is a transistor circuit,
the magnetic coil, Hall sensors or the computer ECU, IGT signal to trigger the turn-on or off, thereby controlling
the current through the ignition coil primary off, high voltage ignition.
To confirm the existence of electronic ignition failure, the first use of two 3-5W automotive instrument light
bulb (or bulbs) compared with the ignition of the "1" side and "2" series and then connected to the battery side
positive. In this way, light bulbs, "2" instead of the ignition coil, ignition internal power transistor as the
load (Note: If you do not have this load, "2" then the power directly to the positive side, the power transistor
will burn in the conduction time), another light bulb " 1 "as the ignition circuit of the current internal
instructions.
Due to internal circuit current, voltage drop on the bulb is small, only make the reddish light bulb filament
does not affect the pre-amplification.
Then, with one or two batteries to trigger the ignition device "A" side, will make light bulb "2" flashes. If
the lamp "2" does not flashes, the polarity should be reversed or re-check the battery terminals is wrong, light
bulbs, "2" If it still does not light or long light does not flash, indicating that the ignition is faulty and
should be replaced. This clever use of two 3-5W light bulb to do to protect and instructions. Normal bright light
is the "2" side, the transistor collector current; reddish is "1" side, the internal pre-circuit current is small.
As series two light bulbs, no matter what, will not burn ignition, card points safe, fast. Lexus has been excluded
by the Act 400 (Engine Model lUZ), Honda Accord (Engine Model F22A), Crown 3.0 (Engine Model 2JZ) and other cars
fault, very effective. I also used this method to make two serious damage to the ignition circuit and can not
identify the car ignition terminal back to normal firing function (a crown of 2.8, the engine 5M-E, a Toyota Keluo
La, Engine 4A-GE) .
The article above is transfered from glow plug, and spark plug. |