2015 Jeep Grand Cherokee Owner Manual SRT - Page 531

MAINTAINING YOUR VEHICLE 529 Indicator Light (MIL)" is functioning and is not on when 2. As soon as you cycle the ignition switch to the ON the engine is running, and that the OBD II system is position, you will see the Malfunction Indicator Light ready for testing. (MIL) symbol come on as part of a normal bulb check. Normally, the OBD II system will be ready. The OBD II 3. Approximately 15 seconds later, one of two things will system may not be ready if your vehicle was recently happen: serviced, recently had a dead battery or a battery replace• The MIL will flash for about 10 seconds and then ment. If the OBD II system should be determined not return to being fully illuminated until you turn OFF ready for the I/M test, your vehicle may fail the test. the ignition or start the engine. This means that your Your vehicle has a simple ignition actuated test, which vehicle's OBD II system is not ready and you should you can use prior to going to the test station. To check if not proceed to the I/M station. your vehicle's OBD II system is ready, you must do the • The MIL will not flash at all and will remain fully following: illuminated until you place the ignition in the off 1. Cycle the ignition switch to the ON position, but do position or start the engine. This means that your not crank or start the engine. vehicle's OBD II system is ready and you can proceed to the I/M station. NOTE: If you crank or start the engine, you will have to start this test over. If your OBD II system is not ready, you should see your authorized dealer or repair facility. If your vehicle was 7