volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Operational Readiness of Oxygen Sensor After Catalyst, Checking|Page 2131 > < Operational Readiness of Oxygen Sensor After Catalyst, Checking|Page 2129
Page 25
background image

-

Set multimeter for voltage measurement and connect it to terminals 1 + 2 at connector to control module.

Vehicles with engine code AWP, AWW

-

Set multimeter for voltage measurement and connect it to terminals 1 + 2 at connector to control module.

Continued for all vehicles

-

Start engine, and let run at idle.

-

Measure voltage supply
Specified value: oscillating between 0.0 and 12.0 V

If there is no voltage:

-

Switch ignition off.

-

Connect test box to control module wiring harness. See: Powertrain Management/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 Engine Control
Module (ECM) is not connected.

Vehicles with engine code AWD

-

Check wire between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 2 + socket 63
Wire resistance: max: 1.5 Ohms

If specified value is obtained:

-

Check wire connection from terminal 1 to Fuel Pump (FP) Relay -J17- according to wiring diagram.

Operational Readiness of Oxygen Sensor After Catalyst, Checking|Page 2131 > < Operational Readiness of Oxygen Sensor After Catalyst, Checking|Page 2129