Vehicle ignition system Volkswagen Passat B3

General information about the ignition system
The ignition system generates an electric spark for each cylinder of a gasoline engine at the right time. This spark ignites the air-fuel mixture entering the cylinder. In the...

TSZ-H ignition system
1 - TSZ switch Location: Front right under the drainage cover. 2 - high voltage wire 3 - tip with noise suppression resistor 4 - terminal 4 5 - terminal 15 (+) 6 - terminal 1 (-)...

VEZ ignition system
1 - VEZ control unit Right under the water cover. 2 - connecting plug 3 - vacuum pipeline 4 - throttle angle sensor 5 - connecting plug 6 - switch TSZ-H Right under the water...

Digifant ignition system
Ignition distributor, ignition coil, spark plug 1 - high voltage wire 2 - tip with noise suppression resistor 3 - screen 4 — a cover of the distributor of ignition 5 - carbon...

Precautions when working with electronic ignition systems
In electronic ignition systems, high voltage can be up to 30 kV (kilovolt). To avoid personal injury and/or damage to the electronic ignition system, pay attention to the...

Checking the ignition coil
The ignition coil can be checked with an ohmmeter. Disconnect ground wire from battery. Remove the ignition coil cover and disconnect the terminals from the coil. 1st performance...

Checking high voltage wires
Disconnect ground wire from battery. Remove the spark plug tip. Remove the high voltage wires from the distributor cap and ignition coil. Caution: Remove by the lugs, not by the...

Checking the ignition distributor slider
For the perfect functioning of the ignition spark, the resistance of the distributor slider should not be too large. Remove the ignition distributor cap. Connect an ohmmeter to...

Distributor for TSZ and Digifant ignition systems
1 - ignition distributor slider 2 - dust cap 3 - retaining ring 4 - rotary diaphragm 5 - pin 6 - spring washer 7 - connecting plug When disconnecting and connecting, the ignition...

Removal and installation of the distributor of ignition
Complete removal of the ignition distributor is only necessary for major repairs. On engines with VEZ and Ke-Motronic systems, the ignition distributor is located on the side of...

Checking the TSZ-H System Switch
TSZ, VEZ, Digifant systems Attention: To avoid damage to electronic components, the following operations must be carried out only with the ignition off: disconnecting and...

Hall sensor test
Attention: Hall sensor test is required only if there is no ignition spark. Systems TSZ-H, Digifant Check the TSZ-H switch, the same plug and wires to the ignition distributor....

Adjusting the ignition timing and checking the knock sensor
Digifant ignition system Attention: If during the test the adjustment of the knock sensor was changed, the engine must then be turned off. Then start the engine again to check the...

Checking / adjusting the ignition timing
An crankshaft speed meter and a stroboscope are used to check and adjust (ignition timing flash lamp). Warm up the engine to normal operating temperature. The operating...

Ignition timing values
Attention: When adjusting the ignition timing, it is necessary to determine whether the vacuum hose from the vacuum ignition timing controller on the distributor should be...

Spark plug
The spark plug consists of an insulator, a housing, a center electrode and a ground electrode. The central electrode is hermetically fixed in the insulator, and the insulator is...

Check of a cover of the distributor of ignition
Remove the cover of the ignition distributor, to do this, press the two clamping brackets on the side with a screwdriver. The lid inside must be dry. Check the internal contacts...

Checking electrical connections
Check the reliability of all electrical connections at the ignition coil and distributor. Remove corrosion at the joints with a wire brush or needle file, if necessary, spray the...

Removal and installation of spark plugs
VW Passat vehicles are equipped with so-called long life spark plugs. The long service life of the spark plugs is achieved, depending on the version, by means of three earth...

Diagnostics of malfunctions of system of ignition
Fault: The engine starts poorly or does not start at all.

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