Beetle L4-1781cc 1.8L Turbo (APH) (1999)
-
Connect test box V.A.G 1598/31 to control module wiring harness. The engine control module is not connected by this action.
-
Check wiring between test box and 4 pin connector for open circuit according to wiring diagram.
-
Cylinder 1 contact 3 + socket 102
-
Cylinder 2 contact 3 + socket 95
-
Cylinder 3 contact 3 + socket 103
-
Cylinder 4 contact 3 + socket 94
Wire resistance: Max. 1.5 Ohms
-
Additionally check wires for short to one another.
Specification: Infinity Ohms
If no malfunction can be found in the wiring:
-
Replace Engine Control Module (ECM).