04 Navi No Start-No Crank No PWR to OBD

[03NavigatorGuy]

Test fuse 102 on both test points and follow the wire on the diagram

HAS power.


Test the pin 4 light green/violet wire at the ignition switch

HAS power


Check pin 11 red/ light blue wire back at the central junction box with the ign switch in start

NO power detected


Check pin 3 tan/red wire also at the central junction box trans in park or neutral

NO power detected - rattling and/or moving gear shift - no change


Pull starter relay - check 86 when key is in start, trans in park/neutral

NO power

 

[Hamfisted]

So you don't have power getting out of the ignition switch if I'm reading the diagram right. They're cheap.

 

[03NavigatorGuy]

So you don't have power getting out of the ignition switch if I'm reading the diagram right. They're cheap.

It seems that way, I'll probably get/order one tomorrow. Just seems there is so much else that is not getting and/or putting out power!

 

[stamp11127]

No power on pin 11 tells you there is one problem between the fuse 102 and the central junction box at pin 11. The ignition switch is between those two points. But you haven't proven it has failed yet.
At the plug for the ignition switch, jump pin 4 to pin 7 - this is the same as turning the ign switch to start. If the starter works the ignition switch is bad, if not then you keep checking.
Should it not work, leave the jumper on pins 4 & 7 and check pin 11 again for voltage.


"This is what I found. The wire to pin 4 is hot as it should be. When I jump 4 to 6, nothing happens, when I jump 4 to 7 nothing happens."
If this is correct then you have a problem between pin 7 at the ign switch and pin 11 at the cjb.

 

[03NavigatorGuy]

No power on pin 11 tells you there is one problem between the fuse 102 and the central junction box at pin 11. The ignition switch is between those two points.
At the plug for the ignition switch, jump pin 4 to pin 7 - this is the same as turning the ign switch to start. If the starter works the ignition switch is bad, if not the you keep checking.
Should it not work, leave the jumper on and check pin 11 again for voltage.


"This is what I found. The wire to pin 4 is hot as it should be. When I jump 4 to 6, nothing happens, when I jump 4 to 7 nothing happens."
If this is correct then you have a problem between pin 7 at the ign switch and pin 11 at the cjb.

Jumping pin 4 to 7 did nothing! Also, I jumped pin 4 to 1 to see if something would happen, as I noted before that when I touched it with the test light, I could hear a buzzing in the ignition. When I did this something in the floor shifter started to smoke, if that tell you/us anything, other than don't do do it again!

 

[stamp11127]

Smoke is bad! Very important to only jump the pins indicated or you may end up spending big bucks.

Pin 1 of which connector did you connect 4 to?

 

[03NavigatorGuy]

If you are speaking of the ignition switch. I was looking at this one, it's supposed to be for 03-04 Navigators.

 

[03NavigatorGuy]

And this one.

 

[stamp11127]

If you connect pin 1 to pin 4 of the ignition switch plug, both are positive voltage. That will not do anything to cause you to let the smoke out.

Still need to jump 4 & 7 then check pin 11 and 1 at the cjb. Both should have power.

Also double check the wire color for each pin, anytime they don't agree that may indicate the wrong diagrams or the wrong connector.

 

[stamp11127]

Do you have remote start?