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Test Z: Low Engine Oil Level Indicator Always On

  1. If IPC diagnostic system check was performed, go to next step. If IPC diagnostic system check was not performed, go to INSTRUMENT PANEL CLUSTER DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing IPC diagnostic system check, go to next step.
  2. Verify low oil level message is present on Driver's Information Center (DIC). If low oil level message is not present, problem may be intermittent. To diagnose intermittent, go to INTERMITTENT TROUBLE CODE DETERMINATION in BODY CONTROL MODULES - CORVETTE article. If low oil level message is present, go to next step.
  3. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Select IPC DATA 2 data list and monitor LOW OIL LEVEL. If low oil level is NO, go to next step. If low oil level is not NO, go to step  5 .
  4. Replace IPC. See INSTRUMENT PANEL CLUSTER  under REMOVAL & INSTALLATION. After repairs, go to step  10 .
  5. Turn ignition off. Locate PCM and disconnect connectors. See Figure . Turn ignition on. Connect test light between ground and PCM connector C1 terminal No. 70 (Brown wire). See Figure . If test light illuminates, go to next step. If test light does not illuminate, go to step  7 .
  6. Observe test light. Locate engine oil level sensor and disconnect. Engine oil level sensor is located on right side of oil pan. If test light is illuminated, go to step  8 . If test light is not illuminated, go to step  9 .
  7. Replace PCM. See POWERTRAIN CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to step  10 .
  8. Repair short to ground in Brown wire between PCM connector C1 terminal No. 70 and engine oil level sensor. See Figure . After repairs, go to step  10 .
  9. Replace engine oil level sensor. After repairs, go to next step.
  10. Recheck system operation to verify the repair. If system operates properly, repair is complete. If system does not operate properly, go to step  3 .
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