GTI GLS L4-1.8L Turbo (AWW) (2001)
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Connect VAG1598/31 test box to control module wiring harness. The engine control module remains disconnected.
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Check wiring for open circuit between test box and 6-pin connector using wiring diagram.
Contact 4+socket 5
Wire resistance: max. 1.5 Ohm
If no fault in wire is detected:
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Replace engine control module.
Sensor and Sensor Control Check
Sensor and Sensor Control Check
NOTE:
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Raise vehicle to reach oxygen sensor connector.
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The oxygen sensor (before catalyst) has constant regulation and can be distinguished by a 6-pin connector from the Oxygen Sensor (O2S) behind
Three Way Catalytic Converter (TWC).
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Only gold contacts may be used for servicing the contacts in the connector for the oxygen sensor.
Special tools and equipment
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VAG1551 scan tool or VAG1552 mobile scan tool with VAG1551/3B cable
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VAG1598/31 test box
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VAG1526 hand multimeter or VAG1715 multimeter
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VAG1594 adapter set
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Wiring diagram
Check conditions