New Beetle L4-1.8L Turbo (BNU) (2005)
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Check resistance for sensor heater at connector to oxygen sensor terminal 1 + 2.
Specified value: 1.0 to 20.0 Ohms (at room temperature)
If specified value is not obtained:
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Replace Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-.
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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.
If specified value is obtained:
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Check Ground (GND) activation of oxygen sensor heater.
Checking 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.
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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 63
Wire resistance: max. 1.5 Ohms
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Check wires for short circuit to B+ and to 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
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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.
If no malfunctions are found in wires:
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Replace Motronic Engine Control Module (ECM) -J220-.