Jetta L4-2.0L (AEG) (2000)
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
Heated Oxygen Sensor (HO2S) after Three Way Catalytic Convertor (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: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool
Connecting
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Switch ignition on 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 and press -Q- button to confirm input.
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.