Skoda Fabia

since 2000 release

Repair and operation of the car



Skoda Fabia
+ 1.1. Description of the car
+ 2. Engine
+ 3. Lubrication system
+ 4. Power supply system
+ 5. Cooling system
+ 6. System of production of the fulfilled gases
+ 7. Transmission and running gear
+ 8. Steering
- 9. Brake system
   + 9.1. Pedal knot
   9.2. Vacuum amplifier
   9.3. Main brake cylinder
   9.4. Pressure regulator (on models without ABS)
   + 9.5. The brake mechanism of a forward wheel like FS III
   + 9.6. The brake mechanism of a forward wheel like FS II
   + 9.7. Brake mechanism of a back wheel (drum)
   + 9.8. Brake mechanism of a back wheel (disk)
   + 9.9. Parking brake
   - 9.10. Anti-blocking system (ABS)
      9.10.1. Check of an electrical wiring of ABS
      9.10.2. Removal and installation of the control unit
      9.10.3. Replacement of the control unit
      9.10.4. Replacement of a wire of the sensor of frequency of rotation of a wheel
      9.10.5. Replacement of the sensor of frequency of rotation of a wheel
      9.10.6. Replacement of touch rings of sensors of frequency of rotation of wheels
      9.10.7. Removal and installation of the switch of a signal of braking
+ 10. Electric equipment
+ 11. Body
+ 12. Electrical circuitries



9.10.1. Check of an electrical wiring of ABS

GENERAL INFORMATION

Numbering of contacts (1-42) of a connecting block of the ABS control unit


PERFORMANCE ORDER
1. Before check check safety locks and faulty replace. Then switch off ignition and disconnect everything consumers of the electric power (headlights, the radio tape recorder, the fan, etc.).
2. Remove the top casing of the engine (see subsection 2.1).
3. Put forward a clamp of a block and, having pulled up, disconnect a block from the control unit.
4. For check of a power-supply circuit of the hydraulic pump ABS connect at the switched-off ignition the voltmeter (a limit of measurements not less than 20 V) to contacts 1 and 2 blocks.
5. The voltmeter has to show tension approximately equal to tension of the rechargeable battery. Otherwise check wires from contact 1 to "weight" and from contact 2 to the block of safety locks.
6. For check of a power-supply circuit of electromagnetic valves connect at the switched-off ignition the voltmeter (a limit of measurements not less than 20 V) to contacts of the 5 and 6 block.
7. The voltmeter has to show tension approximately equal to tension of the rechargeable battery. Otherwise check wires from contact 5 to "weight" and from contact 6 to the block of safety locks.
8. For check of a power-supply circuit of the ABS control unit connect at the switched-off ignition the voltmeter (a limit of measurements not less than 20 V) to contacts of the 23 and 5 block.
9. The voltmeter has to show tension approximately equal to tension of the rechargeable battery. Otherwise check wires from contact 5 to "weight" and from contact 6 to a conclusion "15".
10. For check of the switch of a signal of braking connect at the switched-off ignition the voltmeter (a limit of measurements not less than 20 V) to contacts 5 and 32 blocks.
11. The voltmeter has to show tension less than 1 Century. If tension has other value, check the braking signal switch, and also wires from contact 5 to "weight" and from contact 32 to the braking signal switch.
12. Then press a brake pedal. The voltmeter has to show tension approximately equal to tension of the rechargeable battery. Otherwise check the corresponding safety lock.
13. For check of the ASR switch connect at the switched-off ignition the voltmeter (a limit of measurements not less than 20 V) to contacts of the 5 and 27 block. Include ignitions and ASR. The voltmeter has to show tension approximately equal to tension of the rechargeable battery.
14. Then switch off ASR. The voltmeter has to show tension less than 1 Century. Otherwise check wires from contact 5 to "weight" and from contact 27 to the ASR switch, and also the ASR switch.

The chains connected to contacts of a block

Number of contact
The chains connected to contacts of a block
1
On "mass" of a conclusion "31"
2
From the + plug of the rechargeable battery
5
On "mass" of a conclusion "31"
6
From the + plug of the rechargeable battery
12
To the sensor of frequency of rotation of the left forward wheel
13
To the sensor of frequency of rotation of the left back wheel
14
To the sensor of frequency of rotation of the left back wheel
15
To the sensor of frequency of rotation of the right forward wheel
16
To the sensor of frequency of rotation of the right forward wheel
23
Food from a conclusion "15"
24
For data transmission (CAN-H)
27
To the ASR switch
28
To the sensor of frequency of rotation of the left forward wheel
30
To the sensor of frequency of rotation of the right back wheel
31
To the sensor of frequency of rotation of the right back wheel
32
To the braking signal switch
40
For data transmission (CAN-L)

The contacts specified in the table are involved.