Jetta GLS Wagon L4-2.0L (AZG) (2002)
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Remove protective cover -arrows- and separate 4-pin connector (brown) to Oxygen sensor (O2S) behind three way catalytic converter (TWC)
-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 to 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 (O2S) behind three way catalytic converter (TWC) -G130-.
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Check DTC memory, if necessary, repair any faults and then erase DTC memory.
See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes
See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Clearing Diagnostic Trouble Codes
Checking Oxygen sensor wiring, Oxygen sensor 2
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Remove wiper arms and cowl panel.