Park/Neutral safety switch - JeepForum.com

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post #1 of 5 Old 06-11-2016, 12:46 PM Thread Starter
DDDeibler
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2006 KJ Liberty 
 
Join Date: Aug 2011
Location: Virginia Beach
Posts: 3
Park/Neutral safety switch

I have an intermittent no crank no start issue after driving and shutting down. Once the Liberty sets foe a good bit it will start. Dealership cannot figure it out so I thought I would change the start relay and the neutral safety switch. I have change the start relay but cannot find where the neutral safety switch is located. Can anybody tell me where the Park/Neutral safety switch is located on a 2006 CRD? The service manual mentions it throughout the book and reference section 21 Transmission, but when you research that section there is no mention of where it is located.

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post #2 of 5 Old 06-11-2016, 01:48 PM
02blue
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Quote:
Originally Posted by DDDeibler View Post
I have an intermittent no crank no start issue after driving and shutting down. Once the Liberty sets foe a good bit it will start. Dealership cannot figure it out so I thought I would change the start relay and the neutral safety switch. I have change the start relay but cannot find where the neutral safety switch is located. Can anybody tell me where the Park/Neutral safety switch is located on a 2006 CRD? The service manual mentions it throughout the book and reference section 21 Transmission, but when you research that section there is no mention of where it is located.
Inside the tranny most likely:

http://www.jeepforum.com/forum/f28/l...berty-1303980/

What transmission do you have? When it won't start in Park did you ever try to start it in Neutral? Temp thing is weird but could also be a failing starter (bad spot) or a failing ignition switch. The ignition switch activator pin is a known wear item. I'd check this pin first. See the posts near the end of the thread in the link I included above.

"Hey, ya never know til you try." Kurt Russell-Big Trouble in Little China
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post #3 of 5 Old 06-12-2016, 03:31 AM
Billwill
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Join Date: Jul 2007
Location: Hoedspruit, in the Bush, South Africa
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No crank issue means check out the advise that 02blue has given you.

A way of getting you home is to make sure the Jeep is in Park or Neutral, remove the Starter Relay, inside the Starter Relay Socket identify Female pins 30 and 87....briefly Jumper these two pins together. Engine should turn over(if fuse #8 40 Amp under hood is OK) and if ignition is turned ON it may fire and run! Doing this action you will over-ride the Park/Neutral switches, ignition switch/actuator pin and Starter Relay.

The LHD 2006 CRD has a known problem of the wire harness being trapped behind the Fuel Filter Head Mounting Bracket...remove this bracket and check for any damaged wires there...this can cause intermittent shorting to chassis and cause all sorts of weird problems.

2002 2.5 Export CRD Manual 5 speed.
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post #4 of 5 Old 06-12-2016, 06:04 AM
tjkj2002
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2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
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The P/N switch is part of the solenoid pack inside the trans,about a $700 part.
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'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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post #5 of 5 Old 06-12-2016, 06:43 PM Thread Starter
DDDeibler
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2006 KJ Liberty 
 
Join Date: Aug 2011
Location: Virginia Beach
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First, let me thank you all for the replies and information. Yes I have checked all fuses, tried to start in park and also tried in neutral. No luck. Also had it towed to dealer and they could not duplicate the problem. Have not tried to jump the pins 30 and 87 yet. But if it happens again I will try it. I might as well go ahead and get the ignition switch activator pin and replace it if I have to disassemble to inspect.
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