Hall Effect Sensor: Testing and Inspection

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required
- Test box V.A.G 1598/31
- Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
- Adapter set V.A.G 1594
- Wiring diagram

Test conditions
- The battery voltage must be at least 11.5 V.

Test sequence







- Pull 3 pin connector -1- off Hall sender -2-.
- Connect multimeter to measure voltage using aux. cables from V.A.G 1594 to the outer contacts of the connector.
- Switch on ignition.
- Specification: min. 4.5 V
- Switch off ignition.







- Connect test box V.A.G 1598/31 to control unit wiring harness. The engine control unit remains disconnected.







- Check wiring for open circuit between test box and connector using wiring diagram.
- Contact 1+socket 98
- Contact 2+socket 86
- Contact 3+socket 108
Wire resistance: Max. 1.5 Ohms


- Additionally check wires for short to one another.

If no wiring fault is detected and voltage was present between contacts 1 + 3:
- Replace Hall sender (G163).

If no wiring fault is detected and no voltage was present between contacts 1 + 3:
- Replace engine electronics control unit. Service and Repair