Jetta Sedan L5-2.5L (BGP) (2005)
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Separate connector - 1 - for Heated Oxygen Sensor (HO2S) G39.
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Check resistance for Oxygen Sensor (O2S) Heater Z19 at connector to Heated Oxygen Sensor (HO2S) G39 terminal 3 + 4.
Specification: 2.5 to 10.0 Ohms (at room temperature)
If specification is not obtained:
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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 J220. See: 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: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes/Readiness Code, Generating
If specification is obtained:
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Connect test box to Motronic Engine Control Module (ECM) J220 wiring harness. See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test
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Check wires between test box and 6-pin connector for open circuit according to wiring diagram.
Contact
Test box socket
3
5
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
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Check wiring between 6-pin connector terminal 4 and Fuel Pump (FP) Relay J17 for open circuit according to wiring diagram.