Question about 2005 Jeep Liberty Sport
Can i as symptoms before all those parts changed/???????
working with out a schematic, kinda stinks, no?
this IS not a no start ,sorry its NO CRANK
is car auto or stick, both are wired different.
see the steps here.
i dont have liberty books, (dont like this car)
replaced key switch, surely not, you that is not possible if car
has SKIN IMMO system. not at home, not DIY
if you , damage SKIM, LATER WHEN CRANKING WORKS
nowwill never start. ever. (immoblized )
to crank the engine on jeeps, the start relay closes
what closes that , answer the transmission park neutral switch
try cranking in neutral yet, bingo>
no cranks are easy , see below.
no starts, vastly more complex
most these cars use permissive, start relay
the trans gives this permissive so drivers can start in gear.
and run over muffy (safety)
to fix cars like this
go to mitchells (online) google it. all shops have this....
here,, on CD, and book.
if you scanned the PCM with any scan tool
cranking, guess what, it would have errors called
this is 2005 Grand cherrokee,
see this simple drawing.
pin 30 realy must be 12v, if not fuse 10 blown or
main fuse. fronting it.
pin 86 is 12v in park and neutral, if not
p/n switch bad or loss of 12v to said switch.
pin 87 is GOAL, 12v here cranks starter.
last it that pesky 85
this is the PCM, logic
0vdc here, energizes start relay
now the bad news. if all voltage pass but 85, stuck at 12v, (circle 'A")
then you must scan the PCM to find out why
it has good reasons. and will tell you.
i can name 3 but ive not clue as to the options on car , like for example remote starting option.
Posted on Feb 01, 2016
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