Audi Cars 1999-05

Knock Sensor (KS) 1 1

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Testing




NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

  1. Disconnect the 3-pin connector from the Knock Sensor (KS) 1 / Knock Sensor (KS) 2: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)
    NOTE
    Before disconnecting the harness connectors, mark which component goes where.



    Click image to see an enlarged view

    Fig. Measure resistance between terminals 1 and 2 at connectors to Knock Sensor (KS) 1.

  2.  
  3. Measure the resistance between the terminals 1 and 2 at the connectors to the Knock Sensor (KS) 1.
  4.  
  5. Specification: infinite ohms
  6.  
  7. Connect the test box to the 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.

  8.  
  9. Check the wires between the test box and the 3-pin connector for an open circuit according to wiring diagram.

    Contact 1 and socket 106
     
    Contact 2 and socket 99
     

  10.  
  11. Wiring resistance: max. 1.5 ohms
  12.  
  13. Check wires for short circuit to each other.
  14.  
  15. Specification: infinite ohms
  16.  
  17. If resistances and wires are okay., replace respective Knock Sensor (KS) 1.
  18.  


NOTE
Contact surfaces between the Knock Sensor (KS) 1 and the cylinder block must be free of corrosion, dirt and grease.


NOTE
To ensure a problem-free function of the knock sensors, it is important that the torque specification of 20 Nm be adhered to exactly.


NOTE
Use only gold-plated terminals when servicing the terminals in the harness connector of the Knock Sensor (KS) 1.



Click image to see an enlarged view

Fig. Disconnect 3-pin connector from Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66: (1 - Green, for Knock Sensor (KS) 1 and 2 - Grey, for Knock sensor (KS) 2)

 
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