Jetta GLS L4-1.8L Turbo (AWD) (2001)
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Remove protective cover (arrows) and separate 4-pin connector (brown) to Oxygen sensor after catalyst (G130).
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Connect multimeter with aux. cables from VAG 1594 to measure voltage at contacts 3 + 4 (connector to Motronic control module).
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Start engine and measure the basic voltage.
Specification: 0.40 - 0.50 V
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Switch off ignition.
If the specification is not obtained:
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Check Oxygen sensor wiring
If the specification is obtained:
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Replace Oxygen sensor 2 (G130).
Checking Oxygen sensor wiring, Oxygen sensor 2
