The contactless ignition system consists of a switch, a Hall sensor, a distributor, a coil, and a lock. And of course, connecting and high-voltage wires. There are not so many knots that can break.
It is necessary
- - control lamp;
- - voltmeter;
- - connecting wires.
Instructions
Step 1
Place the car on the handbrake, engage in neutral. It is advisable to diagnose the ignition system, simulating the operation of the engine, and not scrolling the crankshaft with the starter. This will conserve battery power. Simulation of the ignition system occurs when the green (signal) wire of the Hall sensor is opened with ground. With a piece of wire, it is necessary to close the wire to ground and open it, as a result, the switch will see a pulse, and then feed it further to the ignition coil. But there are also special devices that simulate the operation of a Hall sensor. They are assembled according to the multivibrator scheme. The device makes several pulses in one second.
Step 2
Check if everything is in order in the car. It is immediately necessary to find out whether the cause of the breakdown really lies in the ignition, and not in the fuel supply system. Also check the timing belt. If it breaks, the starter will rotate the crankshaft faster than usual. The ignition distributor will of course not rotate as it is driven by the camshaft.
Step 3
Check for voltage at the ignition coil. The easiest way to do this is with a 12 volt lamp and up to 3 watts. Of course, the measurement will be more accurate with a multimeter. Turn on the ignition and connect a lamp to the terminal "B" of the coil. It should burn. If it does not ignite, then this indicates the absence of voltage. The cause of the malfunction may lie in the wiring, in the ignition switch, or in the relay.
Step 4
Go to checking the ignition coil and distributor in the presence of voltage. To do this, connect an arrester (or an armored wire with a tip and a spark plug) to the high-voltage connector of the coil. Simulate a pulse from a Hall sensor by shorting the green wire to ground. A spark should slip through. If there is a spark, then this indicates the serviceability of the coil, but the Hall sensor has a defect, it needs to be replaced.
Step 5
Test the switch by measuring the voltage at the coil lead to which the brown wire is connected. Of course, the ignition must be on. If there is no voltage, then there is a malfunction of the switch. If there is voltage, then you also need to check if there are pulses coming from the switch. Disconnect the brown wire from the coil. Connect the lamp to this wire and to the terminal "B" of the coil. All these switchings must be carried out with the ignition off. After assembling the circuit, turn on the ignition and turn the starter. The lamp should blink.
