Golf GLS L4-2.0L (AZG) (2001)
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Check wires between test box and 4-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Terminal 2 + socket 63
Wire resistance: max: 1.5 Ohms
Continuation for all vehicles
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Also check wires for short circuit to B+ and Ground (GND). Specified value: Infinite Ohms
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Check wire between 4-pin connector terminal 1 and Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max: 1.5 Ohms
If no malfunctions are found in wires:
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Replace Motronic Engine Control Module (ECM) -J220-.
With Manufacturer's Scan Tool
Oxygen sensor heater for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-, checking
Special tools and equipment
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V.A.G1551 scan tool (or VAG1552 mobile scan tool) with VAG1551/3 cable
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VAG1598/31 test box
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Multimeter Fluke 83 or equivalent
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VAG1594 connector test kit
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Wiring diagram
Test requirements
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All fuses must be OK.
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Battery voltage must be at least 11.5 volts.
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Fuel Pump (FP) relay must be OK.
Test sequence
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Connect VAG1551 scan tool (VAG1552). Start engine and select the Engine Control Module (ECM) using address word 01. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting