New Beetle L4-2.0L (AZG) (2003)
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Check wires between test box and 6-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram. Terminal 4 +
socket 5: Wire resistance: max. 1.5 Ohms
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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 6-pin connector terminal 3 and the 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 Scan Tool
Heated Oxygen Sensor (HO2S) For Oxygen Sensor Before Catalyst, Checking
NOTE:
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In order to reach the connector of the oxygen sensor you must lift the vehicle.
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Only gold-plated terminals must be used to repair the terminals in the oxygen sensors connectors.
Special tools and equipment
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Scan tool VAG 1551 or vehicle system tester V.A.G 1552 with cable VAG 1551/3B
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Test box V.A.G 1598/31
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Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
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Adapter set V.A.G 1594
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Wiring diagram
Test conditions
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All fuses must be OK
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The battery voltage must be at least 11.5 V
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Fuel pump relay must be OK
Test sequence
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Connect scan tool VAG 1551 (V.A.G 1552). Start engine and select "Address word" 01 of engine control module. When doing this engine must be
running at idle speed.