Table of contents: Ignition system TSZ-H ↓ VEZ System ↓
Ignition system TSZ-H
Check the TSZ-H switch, plug and wires to the distributor.
Disconnect the high-voltage central wire from the distributor terminal and short it to ground with an auxiliary wire of the same cross-section.
Connect a voltmeter between contacts 6 and 3 on the connected TSZ-H relay switch connector.
Turn on the ignition.
Turn the engine clockwise by hand. The measuring device should show from 0 to 2 V, depending on whether the rotor plate is in the gap of the Hall sensor magnet or not.
If this happens, replace the Hall sensor.
VEZ System
Attention: Checking the Hall sensor is required if there is no ignition spark.
Disconnect the plug from the high power output stage on the ignition coil and measure the voltage supplied to terminals 2 and 3.
Turn on the starter. If the LED blinks, the Hall sensor is OK.
Otherwise, disconnect the plug from the Hall sensor and check the voltage supply to the sensor from the control unit.
To do this, connect the voltmeter to the external contacts of the plug.
Turn on the ignition, the device should show at least 9 V.
Connect the plug to the Hall sensor, connect the voltage meter to the central contact of the plug and to ground. First remove the rubber cambric from the plug.
Turn on the starter. If the LED flashes, the Hall sensor is OK.
Otherwise, the distributor, Hall sensor or VEZ control unit is faulty.