Golf GL L4-2.0L (AZG) (2001)
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Connect VAG1598/31 test box to control module wiring harness. Engine Control Module (ECM) is not connected.
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Check wires between test box and 5-pin connector for open circuits according to wiring diagram.
Terminal 5 + socket 29
Terminal 4 + socket 53
Terminal 3 + socket 27
Wire resistance: max: 1.5 Ohms
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Also check wires for short circuit to each other.
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Also check wires for shorts to battery B+ or Ground (GND).
If no DTCs are found in wires:
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Replace Mass Air Flow (MAF) sensor - G70-.
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Check DTC memory, repair any malfunctions and then erase DTC memory.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading
Diagnostic Trouble Codes
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Clearing
Diagnostic Trouble Codes