Jetta L4-1.8L Turbo (AWD) (2000)
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Connect multimeter to measure resistance between contacts 1 and 4.
Specification: Infinity ohms (no continuity)
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Depress brake pedal.
Specification: approx. 0 ohms
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Connect multimeter to measure resistance between contacts 2 and 3.
Specification: approx. 0 ohms
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Depress brake pedal.
Specification: Infinity ohms (no continuity)
If the specifications are not attained:
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Replace brake light/brake pedal switch.
If the specifications are obtained:
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Connect multimeter to measure voltage between contact 1 and Ground.
Specification: at least 11.5 V
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Switch ignition on.
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Connect multimeter to measure voltage between contact 2 and Ground.
Specification: at least 11.5 V
If the specifications are not obtained:
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Check wire between 4-pin connector contact 1 and main fuse/contact 2 and central electrics using wiring diagram.
If the specification is obtained: