2006 TJ Engine shut off & Now no Crank - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Like Tree1Likes
  • 1 Post By RUBI 4 MY MRS
Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 07-29-2019, 09:09 PM
Thread Starter
  #1
Newb
 
yellupdp's Avatar
 
Join Date: Oct 2017
Location: South Carolina
Posts: 3
2006 TJ Engine shut off & Now no Crank

This is a 2006 LJ with 4.0 automatic

I was driving home from work going 45 mph and the engine just cut off, coasted to a side street. Have lights on my dash (no key, fuel light, seat belt and engine light) but gauges show nothing, engine would not crank not even a sound.
Had it towed home.

Click image for larger version

Name:	dash (2).jpg
Views:	15
Size:	173.8 KB
ID:	4166751

Items checked:
Battery - 13.4v
Grounds - found nothing bad
Fuse's good
relays swapped no change

I checked power to my starter solenoid and it did not have any voltage at the starter solenoid from the ignition switch.
I jumped a wire from the battery to the start solenoid and the engine cranks but will not start.

Does the no key light have something to do with this?
Its like when you turn on the ignition its not going through the system tests if that makes any since.

I have read other post about the ignition switch breaking inside, but I was driving down the road and the engine just turned off and all i had were the dash lights mentioned above on.


Any ideas?

I will be checking the ignition switch next.

Attached Thumbnails
Click image for larger version

Name:	dash.jpg
Views:	15
Size:	219.0 KB
ID:	4166735  
yellupdp is offline   Quote
Old 07-30-2019, 11:43 AM   #2
Jeeper
 
Join Date: Apr 2013
Posts: 12,706
That key light is the SKIM antitheft system


Sent from my iPhone using Tapatalk

Digger84 is offline   Quote
Old 07-30-2019, 02:32 PM   #3
Jeeper
 
RUBI 4 MY MRS's Avatar
 
Join Date: Feb 2011
Location: Trails of Nevada
Posts: 3,257
Check fuse 22 in the PDC. Use a meter to test even if it looks good.



If it is good go to the ignition switch & see if the red wire at pin 1 has 12v power (there are 3 red wires so get pin 1 which is at one corner). That wire to the ignition switch supplies power to the starter relay as well as several fuses (9-14) in the fuse block behind the glove box. No power there could explain no crank as well as no key on power to the PCM which would affect the gauges not moving.
__________________


'05 Rubi TJ Unlimited
'93 Toyota 4Runner
RUBI 4 MY MRS is offline   Quote
Sponsored Links
Advertisement
 
Old 07-30-2019, 03:40 PM   #4
Jeeper
 
rgreen65's Avatar
 
Join Date: Aug 2014
Location: S. Georgia
Posts: 5,731
^ The SKIM light is on (the key with the slash) however, that by itself would not keep the Jeep from cranking or starting, if it stayed on, the engine would die about 3 seconds after it started.

The fact that the gauges are off although the lights are on is a good indication. You may have a code in the CEL if you have a reader. I would do what Rubi 4 My Mrs says and then let us know the result.
__________________
2003 Light Khaki TJ Rubicon, Manual, Soft Top
2015 Anvil JKU Sahara, Auto, Hard Top - Traded
2017 Chief JKU Chief, Auto, Hard Top
rgreen65 is offline   Quote
Old 07-30-2019, 07:22 PM
Thread Starter
  #5
Newb
 
yellupdp's Avatar
 
Join Date: Oct 2017
Location: South Carolina
Posts: 3
Thanks for the response, I pulled fuse 22 and checked it with a meter(ohm)
fuse is good.
I then checked the red wire at the top corner, it has 12.29 volts.
Also with the ignition switch on i have power on fuses 9-14 in the glove box

question, doesn't the red wire come from fuse 22?

When i check for power at the starter solenoid with having someone turn the key to start i do not get any power.

Please let me know what else I can check and thank you
yellupdp is offline   Quote
Old 07-30-2019, 08:27 PM   #6
Jeeper
 
Mattaeus's Avatar
 
Join Date: Feb 2017
Location: ME
Posts: 312
No power at Starter Control Wire at the Starer while Key in Start Position = Broken Ignition Switch Actuator Pin, Faulty Ignition Switch or Faulty ignition Switch Circuit.

Have you taken a look at the Ignition Switch and Actuator Pin?
Mattaeus is offline   Quote
Old 07-30-2019, 09:37 PM   #7
Jeeper
 
RUBI 4 MY MRS's Avatar
 
Join Date: Feb 2011
Location: Trails of Nevada
Posts: 3,257
Quote:
Originally Posted by yellupdp View Post
Thanks for the response, I pulled fuse 22 and checked it with a meter(ohm)
fuse is good.
I then checked the red wire at the top corner, it has 12.29 volts.
Also with the ignition switch on i have power on fuses 9-14 in the glove box

question, doesn't the red wire come from fuse 22?

When i check for power at the starter solenoid with having someone turn the key to start i do not get any power.

Please let me know what else I can check and thank you

Yes, fuse 22 powers that (pin 1) red wire. I had you check fuse, then the wire at the switch in case the fuse was good but there was a break in the wire before getting to the switch. Since that fuse/wire, through the switch, powers things needed to both crank the engine & engine & gauge functions needed to start it seemed like the best place to start. Especially since both events apparently happened at the same time.

As noted above, the actuator tip in known to break & keep the starter from engaging but will almost always allow enough movement to at least turn everything else on. From your photo it is apparent that some key function is working since some of the lights are coming on (& I assume go off if you turn the key off).

You can certainly check this by removing the ignition switch & looking at the actuator tip & also turning the switch with a screwdriver to see if the stater will engage & crank the engine. More on this at the link below.

https://www.wranglerforum.com/f210/h...l#post34327165

While you have the switch off you might check the other 2 red wires to verify they also have 12v power (pins 4 & 9 from fuses 6 & 13 in the PDC).

Then another possibility is maybe the PCM is not getting key on power but think that would keep the various lights from coming on in the cluster so maybe not but easy to check.

Go to the C-1 (black) PCM connector & see if you are getting 12v power at the pink/white wire at either pin 11 or 12 (from fuse 12 in the fuse block) when the key is on. You have an auto trans so should be pin 12.


See if turning the switch manually gets the starter to crank the engine & if you have 12v to pin 12 at the PCM & report back.
__________________


'05 Rubi TJ Unlimited
'93 Toyota 4Runner
RUBI 4 MY MRS is offline   Quote
Old 08-10-2019, 07:55 PM
Thread Starter
  #8
Newb
 
yellupdp's Avatar
 
Join Date: Oct 2017
Location: South Carolina
Posts: 3
Sorry it took so long to get back.
I pulled out the ignition switch and actuator, both were good actuator not broken.
Before putting it back in i tried a screwdriver in the switch, same response as with the key no crank.

I also checked the other 2 red wires on the switch and they had 12v

I then checked the c-1 connector at the pink/white wire and had 12 v with key on

I also went through all fuse's and relays again

Is the PCM bad?

Any other ideas on what to check next?

Thanks for your help
__________________
2006 TJ Unlimited
yellupdp is offline   Quote
Old 08-10-2019, 07:58 PM   #9
Jeeper
 
Join Date: Apr 2013
Posts: 12,706
Pcm is not reason for no crank

If you put in neutral or park and jump 12 volts to small terminal on solenoid on starter does it crank
The answer to that question will narrow down the potential causes (but it is NOT the PCM)


Sent from my iPhone using Tapatalk
Digger84 is offline   Quote
Old 08-10-2019, 08:22 PM   #10
Jeeper
 
Join Date: Mar 2017
Location: Golden area
Posts: 320
Quote:
Originally Posted by Digger84 View Post
Pcm is not reason for no crank

If you put in neutral or park and jump 12 volts to small terminal on solenoid on starter does it crank
The answer to that question will narrow down the potential causes (but it is NOT the PCM)
To digger, in the OP he indicated he already jumped the starter and it cranked but didn't start.

To all, as someone else mentioned, the SKIM light on wouldn't prevent a start, but cause a kill about 3 secs after a start.

Fascinating to see how this one gets solved. Maybe some corrosion on some pins in the PCM block connectors?
__________________
/l ,[____],
l---L -OlllllllO-

()_)-()_)-o-)_)

'03 Sahara 4.0 auto, Khaki, D30/8.8, 4.88s, 35 MTs, Truetracs F&R, aux trans cooler, 4" SL, Rancho 9000XLs, Metalcloak arms, 130/90s in Cibies
DougRz is offline   Quote
Old 08-10-2019, 08:29 PM   #11
Jeeper
 
Join Date: Apr 2013
Posts: 12,706
Then he just works backwards from starter control wire not complicated or very interesting since we know which circuit is causing no start




Sent from my iPhone using Tapatalk
Digger84 is offline   Quote
Old 08-10-2019, 09:06 PM   #12
Jeeper
 
RUBI 4 MY MRS's Avatar
 
Join Date: Feb 2011
Location: Trails of Nevada
Posts: 3,257
The fact that is died while driving & will not start does suggest more then just a no crank problem even though the 2 situations (no start & no crank) are not often happening together.

When you turned the ignition switch did the gauges still stay down, as originally shown?



On the later TJs (í05 & í06) the PCM is involved in the starter relay function. I canít say whether that would affect the no start, no gauge issue.

From the ignition switch there is a pink/orange wire at pin 6 that goes to the starter relay coil (b5 terminal) & also splices & goes to the PCM (C-1, pin 30). See if that is getting power when you turn the key (or ignition switch) to the start position. Also, the grounding side of the relay coil (terminal b3) needs PCM grounding (possibly when it sees a signal from your automatic trans park/neutral switch) to close the relay & connect 12v from fuse 6 to the yellow/grey wire going to the starter solenoid.

Here are 3 pages from the FSM which show the circuits.

Check for power & grounding as shown. That should help find why it is not cranking. Whether that will also get it to start, I donít know but if not you can then move on to that issue.
Attached Thumbnails
Click image for larger version

Name:	06 start circuit 1.jpg
Views:	13
Size:	130.5 KB
ID:	4169003   Click image for larger version

Name:	06 start circuit 2.jpg
Views:	14
Size:	117.5 KB
ID:	4169005  

Click image for larger version

Name:	06 start circuit 3.jpg
Views:	14
Size:	94.0 KB
ID:	4169007  
DougRz likes this.

__________________


'05 Rubi TJ Unlimited
'93 Toyota 4Runner
RUBI 4 MY MRS is offline   Quote
Reply

Tags
2006 , no crank , no start , tj unlimited

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 02:49 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeepģ, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC