Jetta Sedan L5-2.5L (BGP) (2005)
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Refer to --> [ Diagnostic Mode 03 - Read DTC Memory ] See: Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Mode 03 - Read DTC Memory.
2. If necessary, erase the DTC memory. Refer to --> [ Diagnostic Mode 04 - Erase DTC Memory ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Diagnostic Mode 04 - Erase DTC Memory.
3. If the DTC memory was erased, generate readiness code. Refer to --> [ Readiness Code ] See: Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes/Readiness Code.
Oxygen Sensor After Catalytic Converter, Checking Heater Circuit
Oxygen Sensor after Catalytic Converter, Checking Heater Circuit
‹› Vehicle must be raised to gain access to the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130).
‹› When servicing terminals in the electrical harness connector of Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130), use
only gold-plated terminals.
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› Fuse (SB45) OK.
‹› The Fuel Pump (FP) Relay (J17) OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to --> [ Engine Control Module, Replacing ] .
Start diagnosis
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Remove the right underbody trim- arrows -.