Idle Switch (Except Fox)
- Connect Test Harness (VW 1501) between vehicle harness and throttle switch lead. Turn ignition on. Connect voltmeter between terminal No. 1 of test harness and ground. If battery voltage is NOT present, check voltage supply between terminal no. 2 of test harness and ground.
- If battery voltage is NOT present, check and repair wiring. See WIRING DIAGRAMS at end of this article for wiring color and terminal numbers. If battery voltage is present, open and slowly close throttle valve.
- Check switch-on point of idle switch, using feeler gauge between throttle lever and idle stop. Switch-on point gap should be .006-.002" (.15-.05 mm) before idle stop. See Fig 1
. If switch-on point is incorrect, loosen and adjust idle switch position. Idle switch is located on underside of throttle valve housing, opposite idle stop.
Courtesy of VOLKSWAGEN UNITED STATES, INC.