volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5881 > < Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5879
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.

Contact

Test box socket

3

68

4

69

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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Erase DTC memory for Motronic engine control module (ECM) 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 there is no malfunction in wire connection:

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Replace Motronic Engine Control Module (ECM) J220.

Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5881 > < Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5879