New Beetle GL L4-2.0L (AZG) (2002)
-
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
-
Also check wires for short circuit to B+ and Ground (GND).
Specified value: Infinite Ohms
If no malfunctions are found in wires:
-
Replace Heated Oxygen Sensor (HO2S) 1 Bank 1 -G39- before catalytic converter, item 2.
-
Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
-
Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
With Manufacturer Scan Tool
Oxygen Sensor And Sensor Control Before Catalyst, Checking
NOTE:
-
Raise vehicle to reach oxygen sensor connector
-
The oxygen sensor (before catalyst) has constant regulation and can be distinguished by a 6-pin connector from the oxygen sensor after catalyst.
-
Only gold-plated terminals must be used to repair the terminals in the oxygen sensors connectors.
Special tools and equipment
-
Scan tool VAG 1551 or vehicle system tester V.A.G 1552 with cable VAG 1551/3B
-
Test box VAG 1598/31
-
Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
-
Adapter set V.A.G 1594
-
Wiring diagram
Check conditions
-
All fuses must be OK
-
The battery voltage must be at least 11.5 V
-
Exhaust system between catalyst and cylinder head must be free of leaks