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Home >> Porsche >> 1986 >> 944 Turbo >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH AFC >> Testing >> Throttle Switch >> Checking Activation of Control Unit

Checking Activation of Control Unit

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  1. With engine at idle speed, pull off plug on idle switch. Engine speed must increase considerably. Engine speed should increase 500 RPM. Ignition timing advance should be 12° BTDC.
  2. If nothing happens, check wire between idle switch plug and control unit plug for breaks according to wiring diagram. If necessary, replace control unit.
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