Golf GL L4-2.0L (AEG) (2001)
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Replace Motronic Engine Control Module (ECM) -J220-.
With Manufacturer's Scan Tool
Heated Oxygen Sensor (HO2S) -G39- before Three Way Catalytic Converter (TWC), checking
Special tools and equipment
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V.A.G1551 Scan Tool (ST) or VAG1552 mobile scan tool with VAG1551/3 adapter cable
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VAG1598/22 test box
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Multimeter (Fluke 83 or equivalent)
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VW1594 adapter set
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Wiring diagram
Test requirements
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Fuse 43 OK
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Battery (B+) voltage at least 11.5 V
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Fuel pump relay OK
Test sequence
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Connect V.A.G1551 (VAG1552) Scan Tool (ST). See: Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting
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Turn on ignition and press buttons -0- and -1- to insert "Engine Electronics" address word 01. Engine must be running at idle when performing this
step.
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press buttons -0- and -8- to select "Read Measuring Value Block" function 08.
Indicated on display
Read Measuring Value Block
Input display group number XXX
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Press buttons -0-, -4- and -1- to input display group number 41 (041) and press -Q- button to confirm input.
Indicated on display: (1-4 = display fields)
Read Measuring Value Block 41
->
1
2
3
4
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Check resistance value for oxygen sensor heater in display field 1.