TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
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Connect multimeter between terminal 1 and 4 for resistance measurement.
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Specification: Infinity Ohms (no continuity)
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Depress accelerator pedal.
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Specification: approx. 0 ohms
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Connect multimeter between terminal 2 and 3 for resistance measurement.
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Specification: approx. 0 ohms
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Depress accelerator pedal.
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Specification: Infinity ohms (no continuity)
If specified values are not obtained:
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Replace brake light switch / brake pedal switch.
If specified values are obtained:
Checking voltage supply
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Connect VAG1527B voltage tester as follows:
Harness connector
Measure to
Terminal
1
Chassis Ground (GND)
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LED must light up.
Harness connector
Measure to
Terminal
2
Chassis Ground (GND)
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Switch ignition on.
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LED must light up.
If LED does not light up:
