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Test S: Change Oil 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. Turn ignition on. Using scan tool, select PCM 3 data list and monitor ENGINE OIL LIFE PERCENT. If scan tool displays zero percent with change engine oil message on, go to next step. If scan tool does not display zero percent with change engine oil message on, go to step  4 .
  3. Reset engine oil life index. See OIL LIFE INDEX RESET  under PROGRAMMING. After completing reset procedure, go to step  5 .
  4. Replace IPC. See INSTRUMENT PANEL CLUSTER  under REMOVAL & INSTALLATION. After repairs, go to next step.
  5. Turn ignition on. Using scan tool, select PCM 3 data list and monitor ENGINE OIL LIFE PERCENT. If scan tool displays 100 percent with change engine oil message off, system is okay. If scan tool does not displays 100 percent with change engine oil message off, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC SYSTEM CHECKS in SELF-DIAGNOSTICS - 5.7L CORVETTE article in ENGINE PERFORMANCE.
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