User Manual - Page 145

For 2020 Wrangler.

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GETTING TO KNOW YOUR INSTRUMENT PANEL 143
NOTE:
If you crank or start the engine, you will have to
start this test over.
2. As soon as you cycle the ignition switch to
the ON position, you will see the “Malfunc-
tion Indicator Light (MIL)” symbol come on
as part of a normal bulb check.
3. Approximately 15 seconds later, one of two
things will happen:
The MIL will flash for about 10 seconds and
then return to being fully illuminated until you
turn OFF the ignition or start the engine. This
means that your vehicle's OBD II system is
not ready and you should not proceed to the
I/M station.
The MIL will not flash at all and will remain
fully illuminated until you place the ignition in
the off position or start the engine. This
means that your vehicle's OBD II system is
ready and you can proceed to the I/M station.
If your OBD II system is not ready, you should
see an authorized dealer or repair facility. If your
vehicle was recently serviced or had a battery
failure or replacement, you may need to do
nothing more than drive your vehicle as you
normally would in order for your OBD II system
to update. A recheck with the above test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle's OBD II
system is ready or not, if the MIL is illuminated
during normal vehicle operation you should
have your vehicle serviced before going to the
I/M station. The I/M station can fail your vehicle
because the MIL is on with the engine running.
3
20_JL_OM_EN_USC_t.book Page 143
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