Volkswagen Touareg 2004-06

Ignition Coils

Print

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable, and if the vehicle has been run recently, allow the engine to thoroughly cool.
  4.  
  5. Remove the engine cover. On 4.2L engines, remove the oil dipstick, then the engine cover bracket as well.
  6.  
  7. Unplug the connector from the ignition coil over each spark plug. On V6 models use tool T10118 or a similar pick tool to disengage the lock tab. Remove the coil by pulling it straight out. If necessary, use tool T10095/A (3.2L engines) or T40039 (4.2L engines) to prevent damage to the coils if they are stuck.

    Click image to see an enlarged view

    Fig. Remove the engine cover



    Click image to see an enlarged view

    Fig. Remove the engine cover bracket on 4.2L engines



    Click image to see an enlarged view

    Fig. Releasing the coil lock tab on 3.2L engines



    Click image to see an enlarged view

    Fig. Ignition coil removal tool-3.2L engines



    Click image to see an enlarged view

    Fig. Ignition coil removal tool-4.2L engines

  8.  
  9. Install the ignition coil to the spark plug and push until it clicks into place. The click may be felt or heard, then gently pull back to assure proper contact.
  10.  
  11. Engage the electrical connectors. On 4.2L engines, install the engine cover bracket and oil dipstick. Tighten the screws to 7 ft. lbs. (9 Nm).
  12.  
  13. Install the engine cover.
  14.  

Testing



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable, and if the vehicle has been run recently, allow the engine to thoroughly cool.
  4.  
  5. Unplug the connectors from the ignition coils (refer to the Ignition Coil removal procedure).

    Click image to see an enlarged view

    Fig. Ignition coil terminal identification-3.2L and 4.2L engines

  6.  
  7. Using a digital multimeter, measure the voltage between terminals 1 and 3, then 2 and 3 of each of the coil connectors. With the ignition ON , it should measure at least 11.5 volts. If no voltage is measured at any of the coil connectors, the Engine Control Module power supply relay (located in the fuse box in the engine compartment) may be faulty. If voltage is measured at only some of the coil connectors, the harness is faulty.
  8.  
  9. Check for an open circuit by measuring with an ohmmeter between terminal 1 and ground, then terminal 2 and ground of each of the coil connectors. If any measure as infinite or greater than 1.5 ohms, either the harness is faulty or you have a poor ground connection.
  10.  
  11. Remove fuses 13 and 14 (for the fuel pumps) from the fuse box in the engine compartment.

    Click image to see an enlarged view

    Fig. Connect an LED test light to terminal 4 of the coil connector

  12.  
  13. Connect a LED test light to terminal 4 of a coil connector, then operate the starter. The LED should flicker. Check the remaining connectors as necessary. If the LED does flicker, but the ignition coil does not produce spark, then the coil may be faulty. If the LED does not flicker, the harness is faulty.
  14.  

 
label.common.footer.alt.autozoneLogo