Passat Sedan 4Motion V6-2.8L (ATQ) (2003)
Tool/DTC Memory Checking and Erasing See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic
Trouble Codes/With Manufacturer's Scan Tool/DTC Memory Checking and Erasing
-
Read readiness code. If DTC memory was erased or Engine Control Module (ECM) was disconnected from B+ supply, readiness code must be
re-generated. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
With Generic Scan Tool
Oxygen sensor heater for oxygen sensors before Three Way Catalytic Converter (TWC), checking
NOTE: When servicing terminals in harness connector of Heated Oxygen Sensor (HO2S), use only gold-plated terminals.
Recommended special tools and equipment
-
V.A.G 1526 multimeter or V.A.G 1715 multimeter
-
V.A.G 1594 Connector test set
-
Wiring diagram
Test requirements
-
The respective fuses of Heated Oxygen Sensor (HO2S) -G39- and Heated Oxygen Sensor (HO2S) 2 -G108- must be OK:
-
Ignition switched off.
Test sequence
-
Disconnect 4-pin harness connector to the respective oxygen sensor:
Heated Oxygen Sensor (HO2S) -G39-, bank 1 4-pin harness connector (black, arrow).