2015 Jeep Cherokee Owner Manual - Page 626

624 MAINTAINING YOUR VEHICLE further information. Tighten the fuel filler cap until a "clicking" sound is heard. This is an indication that the fuel filler cap is properly tightened. Refer to "Onboard Diagnostic System" in "Maintaining Your Vehicle" for further information. EMISSIONS INSPECTION AND MAINTENANCE PROGRAMS serviced, recently had a dead battery or a battery replacement. If the OBD II system should be determined not ready for the I/M test, your vehicle may fail the test. Your vehicle has a simple ignition actuated test, which you can use prior to going to the test station. To check if your vehicle's OBD II system is ready, you must do the following: In some localities, it may be a legal requirement to pass 1. Cycle the ignition switch to the ON position, but do not crank or start the engine. an inspection of your vehicle's emissions control system. Failure to pass could prevent vehicle registration. NOTE: If you crank or start the engine, you will have to For states that require an Inspection and Mainte- start this test over. nance (I/M), this check verifies the "Malfunction 2. As soon as you cycle the ignition switch to the ON Indicator Light (MIL)" is functioning and is not position, you will see the MIL symbol come on as part on when the engine is running, and that the OBD II of a normal bulb check. system is ready for testing. 3. Approximately 15 seconds later, one of two things will Normally, the OBD II system will be ready. The OBD II happen: system may not be ready if your vehicle was recently