Beetle L4-2.0L (AEG) (2000)
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Check resistance for sensor heater at connector to oxygen sensor terminal 1 + 2. Specified value: 1.0...5.0 Ohms (at room temperature)
Vehicles with engine code BDC
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Check resistance for sensor heater at connector to oxygen sensor terminal 1 + 2. Specified value: 8.0...20.0 Ohms (at room temperature)
Continuation for all vehicles
If specified value is not obtained:
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Replace Oxygen Sensor (O2S) 2 Bank 1 Behind Three Way Catalytic Converter (TWC) -G130-.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If specified value is obtained:
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Check Ground (GND) activation of oxygen sensor heater.
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Connect test box to control module wiring harness, connect test box for wiring test. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring
Test
Vehicles with engine code AEG
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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 28: Wire resistance: max. 1.5 Ohms
Vehicles with engine code AVH, AZG, BDC