Golf GL L4-2.0L (AZG) (2001)
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Check wiring for open circuit between test box and 6-pin connector (to control module) according to wiring diagram.
Contact 1 + socket 70
Contact 2 + socket 71
Contact 5 + socket 51
Contact 6 + socket 52
Wire resistance: Max 1.5 Ohms
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Additionally check wires all for short to one another.
Specification: Infinity Ohms
If no malfunction is detected in the pipes:
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Replace Heated Oxygen sensor (HO2S) -G39-.
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Check DTC memory, if necessary, repair any malfunctions 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
With Generic Scan Tool
Oxygen Sensor (O2S) And Oxygen Sensor Control Before Three Way Catalytic Converter (TWC), Checking
NOTE:
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Vehicle must be raised before connector for oxygen sensor is accessible.
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When servicing terminals in harness connector of Heated Oxygen Sensor (HO2S), use only gold-plated terminals.
Recommended special tools and equipment
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VAG1526 multimeter or VAG1715 multimeter
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VAG1594 connector test kit
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Wiring diagram
Test requirements
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The respective fuses of Heated Oxygen Sensor (HO2S) -G39- must be OK.
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Battery voltage must be at least 11.5 volts.
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All electrical consumers like, for example, lights and rear window heating must be switched off.