volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5070 > < Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5068
Page 17
background image

-

Disconnect 4-pin harness connector (black) - 1 - to Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC),G130.

-

Check resistance for Oxygen Sensor (O2S) Heater 1(behind Three Way Catalytic Converter (TWC)) Z59 at connector to Oxygen Sensor (O2S
behind Three Way Catalytic Converter (TWC),G130 terminal 1 + 2.

Specification: 1.0 to 20.0 Ohms (at room temperature)

If specification is not obtained:

-

Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130

-

Erase DTC memory for Motronic engine control module (ECM) J220.  See: Computers and Control Systems/Testing and Inspection/Scan Tool
Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data

-

Generate readiness code.  See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes/Readiness Code, Generating

If specification is obtained:

-

Connect test box to Motronic Engine Control Module (ECM) J220 wiring harness.  See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test

Vehicles with engine code BGP

-

Check wires between test box and 4-pin connector for open circuit according to wiring diagram.

Contact

Test box socket

2

63

Wiring resistance: max. 1.5 Ohms

Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5070 > < Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 5068