Camshaft Position Sensor: Testing and Inspection

Camshaft Position (CMP) Sensor, Checking

Special tools and equipment
- Test box VAG 1598/22
- Hand multimeter VAG 1526 or multimeter VAG 1715
- Adapter set VAG 1594
- Wiring diagram

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

Test sequence
- Pull connector off Camshaft Position (CMP) sensor (distributor).







- Connect multimeter to measure voltage using aux. cables from VAG 1594 to outer contacts of connector.
- Switch ignition on.
Specification: min. 9 V
- Switch ignition off.







- Connect test box VAG 1598/22 to control module wiring harness.







- Check wiring between test box and connector for open circuit according to wiring diagram.
Contact 1 + socket 67
Contact 2 + socket 76
Wire resistance: Max. 1.5 Ohm

- Additionally check wires for short to one another.
Specification: Infinite Ohm

If no wiring malfunction is detected and voltage was present between contacts 1+3:
- Replace distributor with Camshaft Position (CMP) sensor, item 15.

If no wiring malfunction is detected and no voltage was present between contacts 1+3:
- Replace engine control module.