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Home >> Saab >> 1989 >> 900 SPG >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Controls - System/Component Tests) >> Idle Control System >> Automatic Idle Control (AIC)
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Automatic Idle Control (AIC)

WARNING: This page is about a different car, the 1990 Saab 9000 and 1990 Saab 900. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove glove box compartment. Pull out relay panel. Remove relay "E" (delay relay) for the A/C system. Start engine. Connect jumper lead between pins No. 16 and No. 30 on relay holder. Engine speed should increase. If not, go to next step.
  2. Check for voltage at pin No. 30 on relay holder. Check for continuity between Red/White wire and pin No. 16 on relay holder and pin No. 16 on ECU. If voltage is present at pin No. 30 and circuit to ECU is good, check operation of A/C delay relay. If relay is okay, substitute a known good ECU. If problem is corrected, replace original ECU.
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