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Home >> Volvo >> 1986 >> 740 Turbo, 4D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH LH (Non Turbo) >> Circuit Testing >> Ignition Switch Circuit Test

Ignition Switch Circuit Test

  1. Turn on ignition. Connect voltmeter to terminal No. 1 and ground. Voltmeter should deflect. If not, check Gray wire to ignition coil.
  2. Test voltage from terminal No. 18 to ground. Battery voltage should be indicated. If not, check wiring back to ignition switch. Current is supplied through fuse No. 12.
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