Jetta GLX Wagon V6-2.8L (AFP) (2001)
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Check resistance for sensor heater at connector to oxygen sensor terminal 3 + 4.
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Specified value: 2.5...10.0 Ohm (at room temperature)
If specified value is not obtained:
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Replace Heated Oxygen Sensor (HO2S) -G39- bank 1 before catalytic converter:
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Vehicles with engine code AFP, item 7.
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Vehicles with engine code BDF, item 11.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
See: 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: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If specified value is obtained:
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Check 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.
See: Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan
Tool/Test Box, Connecting For Wiring Test
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Check wires between test box and 6-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Terminal 4 + socket 5
Wire resistance: max: 1.5 Ohm
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Also check wires for short circuit to B+ and Ground (GND).
Specified value: infinite Ohm
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Check wire between 6-pin connector terminal 3 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max: 1.5 Ohm
If no malfunctions are found in wires:
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Replace Motronic Engine Control Module (ECM) -J220-.