Jetta Sedan L5-2.5L (BGP) (2005)
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Disconnect 6-pin harness connector (black) - 1 - to Heated Oxygen Sensor (HO2S) G39 before catalytic converter.
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Check wires between test box and 6-pin connector for open circuit according to wiring diagram.
Contact
Test box socket
1
52
2
51
5
71
6
70
Wiring resistance: max. 1.5 Ohms
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Check wires for short circuit to each other, to B+ and Ground (GND).
Specification:Infinite Ohms
If no malfunction is detected in wiring:
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Replace Heated Oxygen Sensor (HO2S) G39 before catalytic converter
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Erase DTC memory for Motronic Engine Control Module (ECM) J220. See: Powertrain Management/Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes/Readiness Code, Generating
Heated Oxygen Sensor Heater Circuit, Checking
Heated Oxygen Sensor Heater Circuit, Checking
‹› When servicing terminals in the electrical harness connector of Heated Oxygen Sensor (HO2S) (G39), use only gold-plated terminals.
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› Fuse (SB45) OK.
‹› Battery voltage at least 12.5 volts.