Diesel vehicle electrical power devices VW Transporter T3

Electrical system of diesel vehicles
The Volkswagen bus's DC electrical system has a voltage of 12 V. The source of current is a three-phase current generator with a voltage and charging current regulation device....

Removal and installation the battery
The battery is located at the rear in the engine compartment. A second battery can be installed under the driver's seat. It is connected via a separating relay only when the...

Checking the battery
Checking acid levels The liquid level should be 5 mm above the plates. If there is a mark for the acid level, then you need to focus on it. For topping up, use only distilled...

Charging the battery
Never short-circuit the battery. When short-circuited, the battery heats up and may discharge. Do not expose it to open flame. The acid has a corrosive effect and should not get...

The battery is self-discharging
If you suspect that there is a leakage current, you need to check the on-board electrical system. Use a charged battery to check. Set the ammeter with a measurement range of 0-200...

List of fuses
Fuses, covered with a plastic cover, are located under the instrument panel on the left or in special holders on the right. Number Consumer Current A 1 Left rear light, left...

Removal and installation of relays
Above the fuse box are various relays. To remove any relay, you must remove the fuse holder. Dismantling (97-656) Unscrew the mounting bolts of the holder. In models from 9.85...

Battery malfunction table
Battery malfunction table

Dismantling and installation of the generator
Dismantling Disconnect the battery from the ground, move the connector clamp to the side, remove the connector, and remove the cable mount. Unscrew the tension bar bolt and move...

Tensioning and replacing the V-belt
Tension Check the V-belt for wear, replace the worn belt. Loosen the mounting bolt on the tie bar. Use a crowbar to push the generator upwards so that the V-belt in the middle can...

Checking the W terminal of the generator
Three-phase generators of diesel vehicles have an additional terminal W. A tachometer can be connected to this terminal. Examination Start the engine. (27-444) Measure the voltage...

Replacing the voltage regulator
(27-356) When replacing the regulator, it is necessary to install a noise-suppressing capacitor 1 (if it's not already standing). (27-393) Beginning with 1981 models, a voltage...

Generator Fault Table
Generator Fault Table Malfunction: Generator indicator light does not light when ignition is on (the engine has not started yet). Malfunction: the generator indicator light does...

Removal and installation the starter
Dismantling Disconnect the battery from ground. Raise the rear of the vehicle. Remove the lower engine cover. Open the cable clamp on the magnetic switch. Mark the electrical...

Starter fault table
Starter fault table If the starter does not turn, first of all you need to check whether there is a voltage of at least 8 volts required for retraction at terminal 50 of the...

This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

Transporter T4 Transporter T3