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Brake pedal switch signal: testing > < Test process

Leon Mk1

Brake light switch signal: testing
Brake light switch signal: testing
–  Remove the lining under the steering column: → Bodywork - fitting work, interior; Rep. Gr.68
   
–  Unplug the 2-pin connector from the brake light switch -arrow-.
–  To measure the resistance, connect the multimeter between the switch contacts.
  E24-0036
Target value: approx. ∞ Ω (without flow)
–  Depress the brake pedal.
Target value: approx. 0.0 Ω (flow)
If the target values are not reached:
–  Replace the brake light switch -F- and then adjust it.
  E24-0025
If the target values are not reached:
–  Connect the multimeter to measure the voltage between contact 1 and earth.
Target value: 11.5 V minimum
If the target value is not reached:
–  Test for open circuits in the wiring between 2-pin connector contact 1 and the fuse box.
Wiring resistance: max. 1.5 Ω
If the target value is reached:
  E24-0026
–  Connect test box -V.A.G. 1598/31- to the control unit wiring harness, without connecting the engine control unit.
  N24-0943
–  Test for open circuits in the wiring between the test box and the 2-pin connector (connector towards the control unit) following the wiring diagram.
Contact 1 + female contact 3
Contact 2 + female contact 56
Wiring resistance: max. 1.5 Ω
–  Also test all wiring for short circuits between wires:
Target value: ∞ Ω
–  Also test the wiring for short circuits to battery positive and earth.
–  Adjust the brake light switch:
  E24-0044

Brake pedal switch signal: testing > < Test process