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Home >> Audi >> 1990 >> 200 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Cis-E III >> Full Throttle Switch

Full Throttle Switch

  1. Connect voltmeter between terminal No. 3 of throttle switch and ground. See Figure . Turn ignition on. Voltmeter should read battery voltage. Turn ignition off. Disconnect full throttle switch connector. Connect ohmmeter across full throttle switch terminals. Fasten pointer for Protractor (3084) to adjuster for accelerator cable (use rubber band). See Fig 1 .
  2. Screw protractor onto throttle shaft and unscrew throttle shaft nut (if necessary). Push throttle lever to full open (at stop limit). Zero pointer plus disc.
    Fig 1: Fastening Protractor to Accelerator Cable
    G94354Courtesy of AUDI OF AMERICA, INC.
  3. Close throttle to 30 degrees, then slowly move toward full throttle position until full throttle switch engages (zero ohm indicated). Protractor should show 6-14 degrees before contacting full throttle limit stop.
  4. If degrees are not as specified, adjust or replace full throttle switch. If degrees are as specified, remove FICU harness connector and check wiring between throttle switch harness connector and FICU.
    NOTE: ICU terminals are imprinted on connector.
  5. Turn ignition off. Using ohmmeter, check continuity between throttle switch terminal No. 1 and the ICU terminal No. 7, and between throttle switch terminal No. 3 and ICU terminal No. 9. See Figure for throttle switch terminal identifications. Readings should be less than .2 ohm.
  6. Using ohmmeter, check continuity between throttle switch terminal No. 1 and FICU terminal No. 28, and between throttle switch terminal No. 3 and FICU terminal No. 31. See Figure and Figure . Readings should be less than .2 ohm. If not, repair break in wiring.