New Beetle GLS L4-1.8L Turbo (AWV) (2001)
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Connect multimeter for voltage measurement to terminals 3 + 4 of connector to Engine Control Module (ECM) and measure primary voltage.
Specified value: 0.40 to 0.50 Volts
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Switch ignition off.
If specified value is not obtained:
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Test oxygen sensor wires.
If specified value is obtained:
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Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-, item 10
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Testing and Inspection/Scan Tool
Testing and Procedures/Read Measuring Value Blocks (Function 08)/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Checking oxygen sensor wires
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Connect test box to control module wiring harness, connect test box for wiring test.
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Check wires between test box and 4-pin connector to Motronic control module for open circuit according to wiring diagram.
Terminal 3 + socket 68
Terminal 4 + socket 69
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
If no malfunctions are found in wires:
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Replace Engine Control Module (ECM)
With Manufacturer's Scan Tool
Oxygen Sensor And Oxygen Sensor Control Before Three Way Catalytic Converter (TWC), Checking
NOTE:
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Raise vehicle to reach oxygen sensor connector.
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The Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC) has constant regulation and can be distinguished by a 6-pin connector
from the Oxygen Sensor (O2S) behind the Three Way Catalytic Converter (TWC).
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Only gold terminals may be used for servicing the terminals in the connector for the oxygen sensor.
Special tools, test equipment and auxiliary items
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VAG 1551 scan tool or VAG 1552 mobile scan tool with VAG 1551/3B cable
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VAG 1598/31 test box
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VAG 1526 hand multimeter or VAG 1715 multimeter