Volkswagen Eurovan 2000-03

Ignition Coils

Print

Removal & Installation



  1. Disconnect the negative battery cable.
  2.  
  3. Remove the engine cover, if necessary.
  4.  
  5. Detach the ignition coil electrical connector
  6.  
  7. Remove the ignition coil with power output stage, using Tool T10094 or equivalent removal tool,
  8.  
  9. Installation is the reverse of the removal procedure.

    Click image to see an enlarged view

    Fig. Exploded view of the ignition coil (1) connector (2), spark plug (16) and related components

  10.  

Testing



  1. Before beginning the test, perform the following:
    1. Fuse no. 18 must be removed from the fuse holder.
      NOTE
      By removing fuse 18, voltage supply to the fuel injectors is interrupted.



      Click image to see an enlarged view

      Fig. Before beginning this test, fuse no. 18 must be removed from the fuse box

    2.  
    3. Fuse no. 20 must be OK.
    4.  
    5. Battery voltage must be at least 11.5 V
    6.  
    7. Engine speed (RPM) sensor must be OK
    8.  
    9. Camshaft Position (CMP) sensor must be OK
    10.  

  2.  
  3. Before servicing the vehicle, refer to the Precautions Section.
  4.  
  5. Disconnect the negative battery cable, and if the vehicle has been run recently, allow the engine to thoroughly cool.
  6.  
  7. 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

  8.  
  9. Using a digital multimeter, measure the voltage between terminals 2 and 3, then 1 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, check the following:
    1. Check for an open circuit by measuring with an ohmmeter between terminal 3 and relay carrier. If it measures greater than 1.5 ohms, either the harness is faulty or you have a poor ground connection.
    2.  
    3. Check for an open circuit by using an ohmmeter to measure between terminal 1 to Ground (GND) and from terminal 2 to Ground (GND) for open circuit. If any measure greater than 1.5 ohms, either the harness is faulty or you have a poor ground connection.
    4.  

  10.  
  11. If there is no malfunction in voltage supply, perform the following:
    1. Connect an LED test light to Terminals 4 and engine Ground (GND) of disconnected connector for cylinder 1.
    2.  
    3. Operate starter and test ignition signal from Engine Control Module (ECM). The LED should flicker. Check the remaining connectors, as necessary. Switch the ignition OFF . If the LED flickers and voltage supply is OK, the coil should be replaced. If the LED does not flicker, the harness is faulty.
    4.  

  12.  

 
label.common.footer.alt.autozoneLogo