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Home >> Saab >> 1992 >> 9000 Base, 2.3 B, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Engine Controls - System/Component Tests) >> Computerized Engine Controls >> Fuel Injection Control Unit >> Ground Circuits

Ground Circuits

WARNING: This page is about a different car, the 1991 Saab 9000 and 1991 Saab 900. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Connect negative lead of ohmmeter to ground. Using positive lead, backprobe ECU terminals No. 5 and No. 17 (Black wires). Resistance should be zero ohms. If not, repair open wire to ground.
  2. Connect negative lead of DVOM to a good ground. Using positive lead, backprobe ECU terminals No. 5 and No. 17 (Black wires). With engine running, DVOM should indicate less than one volt. If higher than one volt, check for opens, corrosion, or loose connection on ground leads.
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