Power electrical devices of car VW Transporter T4

Battery — General Information
The battery is located on the left in the engine compartment under the hood. When removing the battery, remove the hood. For vehicles with an additional battery, the second...

Removal and installation the battery
Removal 1. Turn off the ignition. 2. Battery in the engine compartment: open the hood and unscrew the battery cover (the fastening is indicated by arrows). 3. Removing the second...

Checking the battery
There are two options for testing the battery. Depending on the test, different test devices are required. Checking the density of the electrolyte The density of the electrolyte...

Charging the battery
Warning! Never "short-circuit" the battery: do not connect the positive (+) and negative (-) poles together. Warning! If the battery shorts, it will become hot and may explode....

Storage of the battery
Batteries not used for a long time (for example, when putting a car into storage), self-discharge and may become sulfated. If these batteries are charged with a fast charger, they...

Self-charging of the battery
Depending on the vehicle's equipment, the natural self-discharge of the battery is supplemented by the current consumption of various control devices during conservation....

Diagnosis of battery faults
Cause Method of elimination Electrolyte level too low Recharge. Evaporation (especially in summer) Add distilled water to bring the electrolyte level to the prescribed level (with...

Generator — design description
Generator (4-cylinder diesel engine since 10/92, 5-cylinder petrol engine since 10/91) 1. Bracket; 2. Hexagon nuts M8, 30 Nm; 3. 3-phase AC generator; 4. Voltage regulator; 5....

Checking the generator voltage
1. Connect the voltmeter to the positive and negative terminals of the battery. 2. Start the engine. The voltage during starting should drop to 8 V (at an outside temperature of...

Removal and installation the generator
Generator connection diagram Location of the V-belt of a 4-cylinder engine 1. Generator; 2. Idler roller; 3. Air conditioning compressor; 4. Power steering pump; 5. Crankshaft; 6....

Replacing the generator's graphite brushes and checking the voltage regulator
Generator BOSCH The arrow indicates the location of the voltage regulator. VALEO Generator The arrow indicates the location of the voltage regulator. Depending on the equipment,...

Generator fault diagnostics
Cause Method of elimination The charging indicator light does not light when the ignition is turned on The light bulb burned out Replace The generator ground wire is loose or...

Starter — General Information
Starter wiring diagram To start an internal combustion engine with forced ignition of the air-fuel mixture, a small electric motor is needed - a starter. In order for the engine...

Removal and installation the starter
Protecting the cable from the battery to the starter The arrow indicates the cable protection. Fastening the starter wiring harness The starter wiring harness mount is indicated...

Starter Magnetic Relay — Removal, Checking and Installation
If the magnetic relay is faulty, the starter gear is not ejected and the engine does not start. Examination 1. Remove the starter. 2. Connect to terminal 50 (thick cable...

Starter fault diagnostics
1. If the starter does not rotate, then first check for voltage at terminal 50 of the magnetic relay, which should be at least 8 V. If the value is lower, then it is necessary to...

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Transporter T4 Transporter T3