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Checking the electrical circuits of the brake system (VW Passat B4)

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  • Checking the electrical circuits of the brake system
            0


The basic electrical circuit diagram of the Teves ABS is shown in Fig. 7-8.

Fig. 7-8. Schematic diagram of the Teves ABS

Fig. 7-8. Schematic diagram of the Teves ABS
Pr. - fuse;
M is the ground connection point, the numbers next to the letters indicate the fuse number or ground connection point.
W/1 etc. - the letter indicates the connector in the relay block, the number is the pin number on the connector. The numbers in the squares indicate the relay block or fuse holder number.

Wire color designation:
B - white;
G - blue;
Y - yellow;
3 - green;
K - red;
Kch - brown;
C - gray;
Ch - black.
The first letter indicates the color of the wire itself, the second indicates the color of the stripe on the wire.


Before checking, make sure that the fuses are intact, that the electronic control unit is securely connected to ground, and that the battery is charged normally.

(The information is posted on this website: «VWManual»)

In order not to damage the terminals of the electronic unit connector during testing, it is recommended to connect the control devices via a terminal block with the same terminal numbers as the connector terminals. When testing, follow the instructions in Table 7-4.



In order not to damage the terminals of the electronic unit connector during testing, it is…

In order not to damage the terminals of the electronic unit connector during testing, it is…

In order not to damage the terminals of the electronic unit connector during testing, it is…

In order not to damage the terminals of the electronic unit connector during testing, it is…

This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
The text has been checked: Kolesnikov Artem

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Previous articles
Operation of the braking system
The principle of operation of the braking system
Anti-lock braking system
Brake drive
Features of the brake system
Next articles
Precautions for vehicles with ABS
Removal and installation of the electronic control unit with the hydraulic unit
Removal and installation front wheel speed sensors
Bleeding the brake hydraulic system
Front wheel brakes
Replacing the front brake pads on cars manufactured since July 1995 with an AVE engine


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General information about the brake system Tiguan 1 (2007-2015)
Checking the brake fluid level Sharan 1 (1995-2000)
Checking the electrical system Transporter T4 (1990-2003)
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