Jetta Sedan L4-1.9L DSL Turbo (BEW) (2005)
Specified value: 0.400 to 0.500 Volts
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Switch ignition off.
If specified value is obtained:
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Replace Heated Oxygen Sensor (HO2S) -G39-.
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Erase DTC memory of control module for Diesel-Direct fuel injection system, 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 not obtained:
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Test oxygen sensor wires.
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Checking oxygen sensor wires 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/Test Box, Connecting For Wiring Test
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Connect adapter cable (V.A.G 1598/39-2) to test box (V.A.G 1598/42).
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Check wires between test box and 6-pin connector (to control module for Diesel-Direct fuel injection system) for open circuit according to wiring
diagram.
Terminal 1 + socket 32
Terminal 2 + socket 10
Terminal 5 + socket 54
Terminal 6 + socket 77
Wire resistance: max. 1.5 Ohms
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Check wires for short circuit to B+ or Ground (GND).
Specified value: Infinite Ohms
If no malfunctions are found in wires:
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Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-.
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes