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Oil Pressure Indicator Test

WARNING: This page is about a different car, the 1994 Buick Skylark. However, it is still accessible from the selected car via links, so may be relevant.
  1. If oil pressure indicator is always illuminated, and oil level is okay, go to step 3). If indicator is not illuminated, when oil pressure is low, go to next step.
  2. Check for open in Tan wire between IPC and oil pressure switch/fuel pump switch. If wire is okay, check for continuity to ground at oil pressure switch connector terminal "A" (Tan wire). If continuity is present, replace IPC. See INSTRUMENT PANEL CLUSTER (IPC) R & I  under REMOVAL & INSTALLATION. If continuity is not present, replace oil pressure switch/fuel pump switch.
  3. Disconnect oil level switch connector. Turn ignition switch to RUN position. If oil pressure indicator illuminates, check Tan wire between oil level switch and IPC for short to ground. If wire is okay, replace IPC. See INSTRUMENT PANEL CLUSTER (IPC) R & I  under REMOVAL & INSTALLATION.
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