Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2009COMMANDER SPORT, 3.7 K, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMEMISSIONS CONTROL SYSTEMOPERATIONTASK MANAGERSIMILAR CONDITIONS WINDOWMISFIRE
2009 Jeep Commander Sport, 3.7 K, AWD
Similar Conditions Window: Misfire
2009 Jeep Commander Sport, 3.7 K, AWDSECTION Misfire
- Same Misfire Warm-Up State - Indicates if the misfire occurred when the engine was warmed up (above 71°C (160° F).
- In Similar Misfire Window - An indicator that 'Absolute MAP When Misfire Occurred' and 'RPM When Misfire Occurred' are all in the same range when the failure occurred. Indicated by switching from 'NO' to 'YES'.
- Absolute MAP When Misfire Occurred - The stored MAP reading at the time of failure. Informs the user at what engine load the failure occurred.
- Absolute MAPÂ - A live reading of engine load to aid the user in accessing the Similar Conditions Window.
- RPM When Misfire Occurred - The stored RPM reading at the time of failure. Informs the user at what engine RPM the failure occurred.
- Engine RPMÂ - A live reading of engine RPM to aid the user in accessing the Similar Conditions Window.
- Adaptive Memory Factor - The PCM utilizes both Short Term Compensation and Long Term Adaptive to calculate the Adaptive Memory Factor for total fuel correction.
- 200 Rev Counter - Counts 0-100 720 degree cycles.
- SCW Cat 200 Rev Counter - Counts when in similar conditions.
- SCW FTP 1000 Rev Counter - Counts 0-4 when in similar conditions.
- Misfire Good Trip Counter - Counts up to three to turn OFF the MIL.
- Misfire Data - Data collected during test.
- Test Done This Trip - Indicates YES when the test is done.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.