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Home >> Jeep >> 1991 >> Wrangler Base, 2.5 P >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic System >> Emission Maintenance Reminder (EMR) Memory Test

Emission Maintenance Reminder (EMR) Memory Test

NOTE: Perform EMR memory test only if referred here by flow charts.
  1. To perform EMR memory check, ensure ignition is off. Attach DRB-II to engine diagnostic connector. Connector is located on left side of engine compartment, near SBEC-II. See Figure . Turn ignition switch to RUN position.
  2. Copyright information and diagnostic program version will appear on screen for a few seconds. After a few seconds DRB-II menu will appear. At FUEL/IGN menu, press "5" (ADJUSTMENTS) key. Press ENTER key. At ADJUSTMENTS menu, press "4" (EMR MEMORY CHK) key. Press ENTER key. The DRB-II display will read EMR MEMORY CHECK ARE YOU SURE? (ENTER TO CONTINUE).
  3. Press ENTER key. The DRB-II will display EMR MEMORY TEST WRITE TEST [-------] and after a few seconds IS INSTRUMENT PANEL MILEAGE BETWEEN XXXXX AND XXXXX? (PRESS YES OR NO). If vehicle mileage is within specification, EMR memory check is complete. Press YES key. If vehicle mileage is not within specification, go to next step.
  4. Press NO key. DRB-II will display ENTER MILEAGE SHOWN ON INSTRUMENT PANEL (USE ENTER KEY TO END) XXXXXXX. Enter vehicle mileage. DO NOT  enter tenths. When correct vehicle mileage is entered, press ENTER key.
  5. DRB-II will ask for verification of mileage entry. If mileage entry was accurate, press ENTER key. DRB-II will display EMR MEMORY CHECK COMPLETE. Vehicle must travel at least 8 miles for reset to occur.
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