Check and see if you have brake lights. If not replace the brake switch down by the brake pedal arm. If you do have lights, then you need to check wires first, then replace the shifter. Most solenoids in the shifter can't be replaced with out replace the whole shifter.
Got the tranny option called AUTOSTICK,????????
or CVT trans
or AWD tranny.???? we cant guess what you have.
nor can i scan the PCM to see those DTCs set......???
some of the newer jeeps have 3 switches inside the brake switch
and fact is , one of 3 can fail.
and brakes work but the park lockout side fails.
we use a thing called a voltmeter to find this.
at the switch.
some years, earlier than 2010
there is a park lockout by pass. lever that is hidden.
there. near shifter. its covered in the operators guide.
if missing in the guide that means the new fed law banned it.
it did.
to diagnose park lock out you need the schematic.
if not ,you will chase the tail. like sick puppy...
it also depend s on what trans is there. which option.
some newer models use the TCM to control park lock out.
and not scanning the PCM you will fail to see what side is bad.
say the TRS is sending bad data to the PCM(TCM)
see?
in the old day its just a brake switch and shifter solenoid.
and on some a key switch cable. there to block starting...
not now.
2007 is a big change year at jeeps, all jeeps.
ok , ill look yours up, now, and not guess..... so common here.
07 mk.
autostick has a special shift lever and autostick
the cluster brain, sends the unlock command to
the assem. shift lever .
that means the CLuster sees , the status off all key facts
brakes not on. gears selected. etc.
the MTIP
module totally integrated power (brain)
monitors the brake line.
it will report it failing. if you just scan it. why no scan the car.
why guess , when the PCM/TCM will report all these simple faults.
why work blind?
ok i looked at the brake switch , its just one switch
pin 2 output sends the brake status to the MTIP brain
if pin 2 is ok, 12vdc brake on its ok
if pin2 is 0v the fuse 3 is blown or the switch is in fact bad.
easy huh ?but not if pin2 is 12vd brakes on. (good)
12vdc to MTIP for brakes is OK then...
next is does the MTIP send the unlock signal? to the shifter brain.
now that takes skill to find or just scan it and see if there
are MTIP errors. or shift interlock errors or TRS errors.
as they say, "Its not your fathers oldsmobile."
1 switch, one wire, one solenoid, nah that be too, simple. (lol)
be aware that this newer car will not shift from park with other errors besides brakes.
like TRS errors
or TCM errors
or other serious errors coming from the shifter, TRS switch in trans or if the TCM
can not determine the trans is in park or neutral, or is seeing the wrong gears selected.
what that means is , not scanning the PCM
you will in most cases, guess wrong.
see why?
it's more complex today. (rules)
they also change the rules for how to tow car with no key or engine that dont run.
its in the FSM these.... facts... the book.
when we say TCM that means a seperate TCM box or the one that hides inside the PCM.
fact is, some cars have 4 transmissions (yours)options and some have TCM separate... even today.
the TCM can just be a smarter PCM.
back in 1996, when processors got faster.
they added the TCM to most PCM'S and saved a bundle. (but there still is one there.. hidden)
this fact makes diagnosis more easy.
as does looking up what you have (option)
in the FSM book, it covers all 4 options.
Tranny.
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For
car not changing gears it can be shifter assembly issue, or it can also be
transmission issue. Get the shifter assembly inspected with ignition OFF.
For
more troubleshooting, I suggest you to get the Following help link checked, its
complete step by step procedure to inspect gear shift issues: -----
GEAR SHIFT ISSUES
http://alltypesofpartsreplacing.blogspot.com/2012/11/gear-shift-issues.html
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These will help.
Thanks.
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