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Setting, removing and installing the brake light switchF > < Summary of components - Electrical/electronic components and fitting locations of ABS/ESP systems BOSCH 8.0

Fabia Mk1

Indication of faults by means of warning lights
Indication of faults by means of warning lights
Special tools and workshop equipment required
t  Vehicle system tester -V.A.G 1552- or fault read-out scan tool -V.A.G 1551- or vehicle diagnosis, measurement and information system -VAS 5051-
t  Diagnostic cable -V.A.G 1551/3-, - V.A.G 1551/3A-, -V.A.G 1551/3B-, -V.A.G 1551/3C- or diagnostic cable -VAS 5051/5A-, -VAS 5051/6A-
  Note
t  When using the fault reader -V.A.G 1551- a minor deviation in the display is possible.
t  When using the vehicle diagnosis, measurement and information system -VAS 5051- the electrical test is integrated in the „Targeted fault finding“.
   
Dash panel insert up to model year 2004
  S45-0184
Dash panel insert as of model year 2005
Warning lights
  S45-0187
Pos.Denomination
1Brake pad warning light -K32-
2Traction control system warning light -K86-
ESP and TCS warning light -K155-
3ABS warning light -K47-
4Dual circuit and hand brake system warning light -K7-

Brake pad warning light -K32- (-1-)
t  If the brake pad warning light -K32- (-1-) does not go out after switching the ignition on or glows during the driving operation, the following can be the causes of the fault:
a - The brake pads could be worn down.
Check the brake pads on the front and rear axles.
Replace the brake pads if they are worn down → Chapter and → Chapter.
b - There is a fault in the wiring → Current flow diagrams, Electrical fault finding and Fitting locations
ABS warning light -K47- (-3-)
t  If the ABS warning light -K47- (-3-) does not go out after the ignition is switched on and after completion of the test sequence, the causes of the fault may be:
a - The supply voltage is less than 11 volts.
b - An ABS fault is present. If an ABS fault is present, the anti-lock brake system remains switched off while the conventional brake system remains fully operational.
  WARNING
If an ABS fault -b- is present, the anti-lock brake system remains switched off while the conventional brake system remains fully operational.
c - A fault existed on a wheel speed sensor after the last vehicle start (sporadic fault). If there is a fault on a vehicle speed sensor, the ABS warning light - K47- goes out automatically after restarting the vehicle and after a speed above 20 km/h is reached.
d - The connection from the dash panel insert to the ABS control unit -J104- (databus) is interrupted → Current flow diagrams, Electrical fault finding and Fitting locations.
e - The dash panel insert is defective.
ABS warning light -K47- (-3-) and dual circuit and hand brake system warning light -K7- (-4-)
t  If the ABS warning light -K47- (-3-) goes out or the dual circuit and hand brake system warning light -K7- (-4-) lights up or flashes, the causes of the fault may be:
a - The hand-brake is still applied (warning light lights up).
b - The brake fluid level is too low (warning light flashes).
c - There is a fault in the wiring between dash panel insert and brake fluid level warning contact -F34- → Current flow diagrams, Electrical fault finding and Fitting locations.
t  If the ABS warning light -K47- (-3-) and the dual circuit and hand brake system warning light -K7- (-4-) do not go out, then the ABS and EBD (Electronic Brake pressure Distribution) have failed.
One must reckon with a somewhat changed braking characteristic.
  WARNING
Once the ABS warning light - K47- and the dual circuit and hand brake system warning light -K7- have lit up then one can expect the rear wheels to lock quite early on when braking.
ABS warning light -K47- (-3-), dual circuit and hand brake system warning light -K7- (-4-), traction control system warning light -K86- (-2-) and ESP and TCS warning light -K155- (-2-)
t  If the ABS warning light -K47- (-3-) and the dual circuit and hand brake system warning light -K7- (-4-) go out, but the traction control system warning light -K86- (-2-) or the ESP and TCS warning light -K155- (-2-) remain lit, the causes of the fault may be:
a - Fault relates only to TCS or ESP.
b - ASR is switched off with traction control system switch -E132- or with TCS and ESP button -E256-.
c - TCS or ESP is in regulating mode (flashing rhythm 3x per second).
d - Short-circuit to positive in traction control system switch -E132- or in TCS and ESP switch -E256- (warning light goes out after approx. 5 minutes).
Display overview of the warning lights -K7-, -K47-, -K86- or -K 155-
   
Warning lights
1 - Dual circuit and hand brake system warning light -K7-
2 - ABS warning light -K47-
3 - Traction control system warning light -K86- or ESP and TCS warning light -K155-
   For the warning lights of the position 3 there are two different symbols, → Dash panel insert as of model year 2004 and dash panel insert as of model year 2005.
  S45-0203
Display overview
System conditionDual circuit and hand brake system warning light -K7-ABS warning light -K47-Traction control system warning light -K86- or ESP and TCS warning light -K155-Traction control system switch -E132- or TCS and ESP button -E256-
 
Ignition on
test of the lights(-K7- is only indicated for the test in the dash panel insert)		lights uplights uplights upnot actuated
System o.k.does not light updoes not light updoes not light upnot actuated
ESP/TCS or ABS/TCS -in recessdoes not light updoes not light upflashes (3x/seconds)not actuated
ESP/TCS or ABS/TCS are switched offdoes not light updoes not light uplights upactivated
ESP/TCS or ABS/TCS are switched on again via TCS and ESP button -E256- or traction control system switch -E132-(were switched off)does not light updoes not light updoes not light upactivated

   

Setting, removing and installing the brake light switchF > < Summary of components - Electrical/electronic components and fitting locations of ABS/ESP systems BOSCH 8.0