volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 4285 > < Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 4283
Page 4
background image

-

Check wires between test box and 6-pin connector (to control module) for open circuit according to wiring diagram.

Terminal 1 + socket 70
Terminal 2 + socket 71
Terminal 5 + socket 51
Terminal 6 + socket 52

Wire resistance: max. 1.5 Ohms

-

Check wires for short circuit to B+ and to Ground (GND).

Specified value: Infinite Ohms

If no malfunctions are found in wires:

-

Replace Heated Oxygen Sensor (HO2S) -G39-.

-

Erase DTC memory of Engine Control Module (ECM) => page ST-29. Diagnostic mode 4: Reset/erase diagnostic data. See: Testing and
Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data

-

Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes

Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 4285 > < Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 4283