Jetta L4-2.0L (BEV) (2004)
Terminal 3 + socket 51
Terminal 4 + socket 52
Wire resistance: max. 1.5 Ohms
Vehicles with engine code AVH, AZG, BEV
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Check wires between test box and 4-pin connector (to control module) for open circuit according to wiring diagram.
Terminal 3 + socket 68
Terminal 4 + socket 69
Wire resistance: max.1.5 Ohms
Continued for all vehicles
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Check wires for short circuit to B+ and to Ground (GND).
Specified value: Infinite Ohms
If no malfunctions are found in wires:
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Replace Motronic Engine Control Module (ECM) -J220-.
Work sequence (vehicles with engine code BBW)
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Select output of oxygen sensor signals and check whether specified values are being reached, Diagnostic mode 5: Check output of oxygen sensor
signals. See: Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 5: Check Output of Oxygen
Sensor Signals
If specified values are obtained:
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End diagnosis and switch ignition off.
If specified values are not obtained:
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End diagnosis and let engine continue to run at idle.
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Check primary voltage.
Checking primary voltage