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Home >> Volkswagen >> 1987 >> Quantum Base, Standard >> Repair and Diagnosis >> Engine Performance >> Ignition System - BOSCH Hall Effect >> Testing >> Idle & Full Throttle Switch (VOLKSWAGEN 16-Valve) >> Switch Continuity Test
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Switch Continuity Test

  1. Ensure ignition is off. Remove electrical connector CIS-E control unit. Connect ohmmeter between idle switch terminals No. 1 and No. 5.
  2. Manually operate throttle linkage from closed to half-throttle positions. When throttle is closed continuity should exist. When throttle is open continuity should not exist.
  3. Reconnect ohmmeter leads across CIS-E connector full throttle switch terminals No. 1 and 13. Manually operate throttle linkage from closed to full throttle. When full throttle is reached, continuity should exist.
  4. If continuity does not change as indicated or continuity is constant, inspect wiring from control unit to throttle switches. If wiring is not faulty, replace defective switches.
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