volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Electrical check of ABS/EDL/TCS/ESP ITT Mark 20 IE > < Fault finding with fault reader V.A.G 1551 or tester VAS 5051 on ABS/EDL/TCS/ESP ITT Mark 20 IE (flow chart)
Running gear self-diagnosis for ABS
Faults displayed by warning lamps K 47, K118 and K155
Faults displayed by warning lamps K 47, K118 and K155
 
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→ Warning lamps

Item

Designation

1

Brake system warning lamp -K118

2

ABS warning lamp -K47

3

Stability programme warning lamp -K155

Warning lamp -K47

 
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  • ◆ → If the ABS warning lamp -K47- -2- does not go out after switching ignition on and completion of test sequence then the fault may be:
  • -a- Voltage supply is below 10 Volt
  • -b- There is a fault in the ABS
  • The anti-locking brake system remains switched off with an ABS fault -b-, but the brake system remains fully operational.
  • -c- Since the last time the vehicle was started there was a temporary speed sensor fault.
  • In the case of a sensor fault -c-, the ABS warning lamp -K47- will extinguish after restarting the engine and attaining a speed of above 20 km/h (approx. 13 mph).
  • -d- The connection from dash panel insert to control unit -J104- is interrupted.

=> Current flow diagrams, Electrical fault finding and Fitting locations binder

  • -e- Dash panel insert is defective.
 
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Warning lamps -K47- and -K118

  • ◆ → If the ABS warning lamp -K47- -2- goes out, but the brake system warning lamp -K118- remains on, then the fault may be:
  • -a- The handbrake is applied..
  • -b- There is a fault in the activation of the brake system warning lamp -K118.

=> Current flow diagrams, Electrical fault finding and Fitting locations binder

  • -c- The brake fluid level is too low.
  • ◆ If the ABS warning lamp -K47- -2- and the brake system warning lamp -K118- -1- light up, the ABS system is defective and the EBD (Electronic brake pressure distribution) is not functioning.
Warning!
After the ABS warning lamp -K47- and brake system warning lamp -K118- have lit up it is possible that the rear wheels will lock-up earlier.
 
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Warning lamp -K155

  • ◆ → If the stability programme warning lamp -K155- -3- does not go out after ignition is switched on and test sequence is completed then the fault may be:
  • -a- Short to positive in TCS/ESP button -E256-.
  • -b- There is a fault in the activation of the stability programme warning lamp -K155-.

=> Current flow diagrams, Electrical fault finding and Fitting locations binder

  • -c- The TCS/ESP system has been switched off via button -E256-.
  • There is a fault present which exclusively affects the safety systems of the TCS/ESP. The ABS/EDL and EBD safety systems of the vehicle remain fully functional.

If stability programme warning lamp -K155- flashes whilst driving the TCS or ESP system is regulating the system.

Electrical check of ABS/EDL/TCS/ESP ITT Mark 20 IE > < Fault finding with fault reader V.A.G 1551 or tester VAS 5051 on ABS/EDL/TCS/ESP ITT Mark 20 IE (flow chart)