no crank, silent starter, dead starter , on this JEEP 2006.
lots of things cause this some simple others no so.
but if the battery is weak the electronics in your car will go nuts and act odd,
clues besides dead starter. (all AAA and ask for jump)
1: dim headlamps
2: relays chatter , key on. or even starter chattering ?
3: IMMO shows IMMO error due to low battery. 12.6vdc is charge battery 100% at 70F ambient temps.
4: scan tool shows battery errors, or scan tool is dead, due to DTC port DEAD and due to battery dead.
5: jumper cable start car. ? if passes ,your battery is bad or ONLY discharged. no starter still dead here. jumped. or do this.
6: pull a dead battery out, put in borrowed known to start a car battery from car# 2 to your liberty. ok starter still dead.
7: own voltmeter>? y/n, if yes say so and we go to work. lacking one, we must guess.
7: own a OBD2 scan tool? (did you know there are DTCs that that flat tell you , the starter relay is bad, for sure 2006 up.) and more,
8: if you make it this far, and you charged the battery fully using battery charger, do not let battery sit for months, on dead car or the battery sulfates and will never be good again.
9: try a new $5 starter relay. does it crank now? (sold in all cars stores USA) no need to drive 100 miles to jeep dealer.
10: if it does crank ok and the IMMO lamp 20 stays red, that means IMMO is sick and not ever good this. $$$$$$ (do you have 2 keys?) never own just 1 key on any modern car.
11: still no crank ?we hot wire the starter (ask) only your mech ,knows how , and is a dangerous test lacking knowledge to do it safe, (park lever and 4wd in neutral , chocked wheels)
front end on stands. or 4wheels off ground, touching nothing is most safe. they sell a hot wire button jumper in all auto stores to make it more easy and 10x more safe.
12: ok it does not crank (hotwired) now so starter is bad.
13: if it does crank then the Starter relay is bad,
14; no the starter relay is new so the TRS (aka. PRNDL) switch in your transmission may be bad or ignition switch. (only voltmeter testing can solve much of this)
15, we back probe these points to learn what is wrong.(with a volt meter DMM it is called set to 20vdc scale)
with DMM measure pin starter relay coil pin orange code,. dead means PCM is not happy to crank (starter blocked by PCM reasons)
the TRS wires, backprobed to be sure the TRS is closed in PARK,
if still will not cranking, we must scan the PCM to find out why it is UNHAPPY.
the fact is the PCM cranks this car , not you, your key is not wired to the starter on this car, the PCM watches the key and the PCM does all cranking not really you, as your old
SUzuki does by direct cranking.
The best I can tell is on JEEP, the IMMO does not cut dead the starter. (I'm not going to break my 2 jeeps to learn this, and is not a liberty)
one way to learn this is to buy new never used ever, new key,
then insert it and try to crank car, I think it cranks but the IMMO for sure kills the ASD relay in 3 seconds flat, yes runs for full 3 seconds. and IMMO lamp flashing , means key bad.
this is the acid test on good liberty,
the jeep FSM , shows no crank logic page.
does not list , IMMO as cause.
but sure the key switch can fail in the ST location sure it can but the PCM tells you it did if you scan it. (sets DTC for key switch errors)
IMMO = immobizer, = skim = skis, means key security system. i like to call it IMMO
TRS = is jeeps name for Transmission Range switch (PRNDL) if fails no car like this cranks.
lots of things cause this some simple others no so.
but if the battery is weak the electronics in your car will go nuts and act odd,
clues besides dead starter. (all AAA and ask for jump)
1: dim headlamps
2: relays chatter , key on. or even starter chattering ?
3: IMMO shows IMMO error due to low battery. 12.6vdc is charge battery 100% at 70F ambient temps.
4: scan tool shows battery errors, or scan tool is dead, due to DTC port DEAD and due to battery dead.
5: jumper cable start car. ? if passes ,your battery is bad or ONLY discharged. no starter still dead here. jumped. or do this.
6: pull a dead battery out, put in borrowed known to start a car battery from car# 2 to your liberty. ok starter still dead.
7: own voltmeter>? y/n, if yes say so and we go to work. lacking one, we must guess.
7: own a OBD2 scan tool? (did you know there are DTCs that that flat tell you , the starter relay is bad, for sure 2006 up.) and more,
8: if you make it this far, and you charged the battery fully using battery charger, do not let battery sit for months, on dead car or the battery sulfates and will never be good again.
9: try a new $5 starter relay. does it crank now? (sold in all cars stores USA) no need to drive 100 miles to jeep dealer.
10: if it does crank ok and the IMMO lamp 20 stays red, that means IMMO is sick and not ever good this. $$$$$$ (do you have 2 keys?) never own just 1 key on any modern car.
11: still no crank ?we hot wire the starter (ask) only your mech ,knows how , and is a dangerous test lacking knowledge to do it safe, (park lever and 4wd in neutral , chocked wheels)
front end on stands. or 4wheels off ground, touching nothing is most safe. they sell a hot wire button jumper in all auto stores to make it more easy and 10x more safe.
12: ok it does not crank (hotwired) now so starter is bad.
13: if it does crank then the Starter relay is bad,
14; no the starter relay is new so the TRS (aka. PRNDL) switch in your transmission may be bad or ignition switch. (only voltmeter testing can solve much of this)
15, we back probe these points to learn what is wrong.(with a volt meter DMM it is called set to 20vdc scale)
with DMM measure pin starter relay coil pin orange code,. dead means PCM is not happy to crank (starter blocked by PCM reasons)
the TRS wires, backprobed to be sure the TRS is closed in PARK,
if still will not cranking, we must scan the PCM to find out why it is UNHAPPY.
the fact is the PCM cranks this car , not you, your key is not wired to the starter on this car, the PCM watches the key and the PCM does all cranking not really you, as your old
SUzuki does by direct cranking.
The best I can tell is on JEEP, the IMMO does not cut dead the starter. (I'm not going to break my 2 jeeps to learn this, and is not a liberty)
one way to learn this is to buy new never used ever, new key,
then insert it and try to crank car, I think it cranks but the IMMO for sure kills the ASD relay in 3 seconds flat, yes runs for full 3 seconds. and IMMO lamp flashing , means key bad.
this is the acid test on good liberty,
the jeep FSM , shows no crank logic page.
does not list , IMMO as cause.
but sure the key switch can fail in the ST location sure it can but the PCM tells you it did if you scan it. (sets DTC for key switch errors)
IMMO = immobizer, = skim = skis, means key security system. i like to call it IMMO
TRS = is jeeps name for Transmission Range switch (PRNDL) if fails no car like this cranks.
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