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Home >> Jeep >> 1999 >> Wrangler Sahara, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Introduction >> System Diagnostics >> Notes
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System Diagnostics: Notes

NOTE: If MIL does not come on for 2-3 seconds and then go off, bulb may be defective, or problem may exist on circuit (CCD Bus) between Powertrain Control Module (PCM) and instrument cluster. If problem exists with CCD Bus, this problem may be displayed when using scan tool to retrieve DTCs.