2007 Jeep Grand Cherokee Owners Manual

360
MAINTAININGYOURVEHICLE
replacement. If the OBD system should be determined
notreadyfortheI/Mtest,yourvehiclemayfailthetest.
a. The MIL will flash for about 10 seconds and then
returntobeingfullyilluminateduntilyouturnoffthe
ignitionkeyorstarttheengine.Thismeansthatyour
vehicle’sOBDsystemisnotreadyandyoushouldnot
proceedtotheI/Mstation.
Your vehicle has a simple ignition key actuated test
which you can use prior to going to the test station. To
checkifyourvehicle’sOBDsystemisready,youmustdo
thefollowing:
b. TheMILwillnotflashatallandwillremainfully
illuminateduntilyouturnofftheignitionkeyorstart
theengine.Thismeansthatyourvehicle’sOBDsystem
isreadyandyoucanproceedtotheI/Mstation.
1.
2.
Insertyourignitionkeyintotheignitionswitch.
TurntheignitiontotheONposition,butdonotcrank
orstarttheengine.
Ifyoucrankorstarttheengine,youwillhavetostart
thistestover.
AssoonasyouturnyourkeytotheONposition,you
If your OBD system is not ready, you should see your
authorized dealer or repair facility. If your vehicle was
recentlyservicedorhadabatteryfailureorreplacement,
you may need to do nothing more than drive your
vehicle as you normally would in order for your OBD
systemtoupdate.Arecheckwiththeabovetestroutine
maythenindicatethatthesystemisnowready.
3.
4.
will see your MILsymbol come on as part of a normal
bulbcheck.
5.
happen:
Approximately15secondslater,oneoftwothingswill
Regardless of whether your vehicle’s OBD system is
ready or not ready, if the MIL symbol is illuminated
Product Specification
CategoriesJeep Grand Cherokee Manuals, Jeep Manuals
Model Year2007
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