Audi Cars 1999-05

Camshaft Position Sensor 1

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The camshaft position sensor is mounted on the cylinder head. This sensor provides a signal to the ECM regarding the relative position of the camshaft.

The crankshaft position sensor is an essential input for the ECM to determine ignition timing. For additional information, please refer to the following topic(s): Driveability and Emission Controls, Camshaft Position Sensor.

Description & Operation



The camshaft position sensor provides information on the camshaft position. The ECM uses this information, along with the engine speed sensor information, to control the ignition timing and fuel injection synchronization.

Removal & Installation



1.8L Engines


Click image to see an enlarged view

Fig. Showing the 1.8L engine camshaft position sensor

  1. Disconnect the electrical connector for the sensor.
  2.  
  3. Remove the timing belt upper cover.
  4.  
  5. Remove the housing for the sensor.
  6.  

2.7L & 2.8L


Click image to see an enlarged view

Fig. Here is the CMP sensor used on the 2.7L & 2.8L engines

Key list for gnam 93224vwg56:

13-CMP sensor, cylinder bank 2

17-Harness connector

18-CMP sensor, cylinder bank 1

Testing




NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

  1. Remove the engine cover with the air filter.

    Click image to see an enlarged view

    Fig. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor

  2.  
  3. Disconnect the 3-pin harness connector (1) at the Camshaft Position (CMP) Sensor
  4.  
  5. Switch the ignition on.

    Click image to see an enlarged view

    Fig. Measure the voltage between terminals 1 and 3 of the connector using a multimeter

  6.  
  7. Measure voltage between terminals 1 and 3 of the connector using a multimeter and the adapter cables from special tool connector test kit V.A.G 1594 C.
  8.  
  9. Specified value: 4.5 to 5.5 V
  10.  
  11. Switch the ignition off.
  12.  
  13. If the voltage is not okay, connect the test box to wiring harness of Motronic Engine Control Module (ECM).

    Click image to see an enlarged view

    Fig. Check wires between test box and 3-pin connector for open circuit

  14.  
  15. Check the wires between test box and 3-pin connector for open circuit.

    Terminal 1 and socket 26
     
    Terminal 2 and socket 44
     
    Terminal 3 and socket 14
     

  16.  
  17. Wire resistance: max. 1.5 ohms
  18.  
  19. Check the wires for short circuit to each other, to Battery (+) and Ground (GND).
  20.  
  21. Specified value: infinite ohms
  22.  
  23. If the wires and voltage are okay, replace the Camshaft Position (CMP) Sensor.
  24.  


NOTE
Use only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) sensor.

 
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