TT Coupe L4-1.8L Turbo (AWP) (2005)
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Connect multimeter (resistance measurement range) between contacts 1 and 4.
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Specification: Infinity Ohms (no continuity)
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Depress the brake pedal.
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Specification: approx. 0 Ohm
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Connect multimeter (resistance measurement range) between contacts 2 and 3.
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Specification: approx. 0 Ohm
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Depress the brake pedal.
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Specification: Infinity Ohms (no continuity)
If the specifications are not obtained:
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Replace brake light switch / brake pedal position switch.
If the specifications are obtained:
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Check voltage supply.
Checking voltage supply
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Connect VAG 1527 B voltage tester as follows: