Crankshaft Position Sensor: Testing and Inspection

CHECKING REQUIREMENTS:
- All sensors correctly installed, securely connected.

CHECKING PROCEDURE:
- Disconnect black Crankshaft Position (CKP) sensor harness connector.

3-Pin Connector:

- Connect multimeter (Fluke 83 or equivalent) to harness connector terminals 1 and 2 (in connector holder) with adapter cable from VW 1594 connector test kit.

Specified Value: approx. 1K ohms.

If specified values are not obtained:
- Replace CKP sensor.

If specified value is obtained:
- Connect multimeter first between terminals 1 and 3 (GND) and then between terminals 2 and 3 (GND).

Specified Value: infinite ohms (no continuity).

If specified values are not obtained:
- Replace CKP sensor.

If specified Value is obtained:
- Check wiring for continuity or short between CKP sensor and ECM using wiring diagram.
- Connect VAG 1598/19 test box to ECM harness connector.



- Check CKP sensor shielding for continuity by connecting multimeter between terminal 3 and engine Ground (GND).

Specified Value: max. 1 Ohm.

- Check wiring for continuity between CKP sensor connector terminal 1 and test box socket A9, then between CKP sensor connector terminal 2 and test box socket A10.

Specified Value: max. 1 Ohm.

If the specified values are not obtained:



- Eliminate short or open circuit in wiring.

CKP Sensor ECM Connector A or
Terminal Number Engine Ground (GND)
1 A9
2 A10
3 Engine Ground (GND)

If wiring is OK:
- Replace ECM.