Golf 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 between test box and 4-pin connector for open circuit using wiring diagram.
Contact 2 and socket 63
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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Only gold contacts may be used for servicing contacts 3 and 4 in connector for 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