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Perform this test on GLI and GTI models only.

  1. With ignition off, disconnect ignition control unit. Set Digital Multimeter (US 1119 ) on 20 volt scale. Connect voltmeter negative lead to terminal 3 and positive lead to terminal 5 at connector. Turn ignition on.
  2. Meter should indicate battery voltage. If no voltage is present, check fuse 18 on fuse block. If okay, check ground connection at intake manifold. Check wire 5 to ignition switch.
  3. Connect voltmeter negative lead to terminal 3 and positive lead to terminal 8 at connector. Turn ignition on. Actuate full throttle switch. Meter should indicate battery voltage.
  4. If no voltage is present, voltage supply (center wire) to throttle switch is open. If not, full throttle switch is defective. Replace full throttle switch.
  5. Connect voltmeter negative lead to terminal 3 and positive lead to terminal 6 at connector. Turn ignition on. Meter should indicate battery voltage. If no voltage is present, wire to idle switch is open. If not, idle switch is improperly adjusted and/or defective.
  6. Connect voltmeter negative lead to terminal 3 and positive lead to terminal 10 at connector. Turn ignition on. Meter should indicate battery voltage. If no voltage is present, wire to fuel pump relay is open. Repair wire as necessary.
  7. Turn ignition off. Set multimeter to ohm scale. Connect ohmmeter between connector terminals 2 and 3. Ensure that CIS-E fuel control unit is connected. Ohmmeter reading must be 90,000-100,000 ohms. If reading is incorrect, wire 2 to CIS-E control unit is open. If not, CIS-E control unit is defective.
  8. Connect ohmmeter between connector terminals 3 and 4. Connect test connector in engine compartment to ground. Ohmmeter should indicate continuity to ground.
  9. Connect ohmmeter between connector terminals 3 and 11. Ohmmeter should indicate continuity. If no continuity is indicated, ground wire between terminal 3 and 11 is open. Repair as necessary.
  10. Connect ohmmeter between connector terminals 3 and 12. Disconnect Hall control unit and install a jumper wire between terminals 4 and 6. Ohmmeter should indicate continuity.
  11. Connect ohmmeter between connector terminals 3 and 13. Ohmmeter should indicate 1 milliohm. If reading is incorrect, wires to knock sensor are open or knock sensor is defective.
  12. Connect ohmmeter between connector terminals 3 and 14. Ohmmeter should indicate 300,000 ohms. If reading is incorrect, wires to knock sensor are open or knock sensor is defective.
  13. Connect ohmmeter between connector terminals 7 and 15. Disconnect Hall Effect sending unit and install a jumper wire between terminals 1 and 3. Ohmmeter should indicate continuity.
  14. Connect ohmmeter between connector terminals 7 and 9. Disconnect Hall Effect sending unit and install a jumper wire between terminals 1 and 2 (Brown/White wire). Ohmmeter should indicate continuity.
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