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Home >> Jeep >> 1991 >> Cherokee Base, 2D Utility, 4.0 S, 4WD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic System >> Entering On-Board Diagnostics >> Notes
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Entering On-Board Diagnostics: Notes

NOTE: Manufacturer recommends using DRB-II (Diagnostic Readout Box-II) to diagnose the system. See DRB-II TEST FUNCTIONS  for complete diagnostic instructions.
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