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Home >> Volkswagen >> 1990 >> Vanagon Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks (Cis-MOTRONIC) >> Hall Effect Sender Switching Function
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Hall Effect Sender Switching Function

  1. Peel back the protective rubber boot on the Hall Effect sender harness connector. Remove coil secondary and attach to ground. Disconnect Hall Effect sender wire harness connector at distributor. Using a LED Test Light (US 1115), check for voltage between outer terminals of connector. See Figure or Figure . With ignition on, light should be on. If not, check wiring for short or open circuit. If not, replace ignition control unit.
  2. If light came on in step 1), reconnect Hall Effect sender harness connector. Pull back Hall Effect sender boot to expose contact terminals. Apply LED Test Light (US 1115) probe to center contact and battery positive terminal. See Figure or Figure . Observe test light while cranking engine. If test light blinks, Hall Effect sender is okay. If not, replace Hall Effect sender.
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