does any one have access to wiring diagrams for the f150. I am looking primarily for the wiring diagram of the 4x4 system on a 2007 f150 4x4. also the PCM diagram. thank you

 

I use BBB Industries Free TSB & Wiring Diagrams

 

thank you sir. I am reviewing the website right now.

 

Did the site work for you? If not, I may be able to dig some up....

 

no it didn't. yes please if you have the information i would greatly appropriate it.

 

@hehatesme1: There are four pages for the 4X4 controls depending on your options. Following are the ones for AWD, Electronic, Electronic 2 and Mechanical. Pick the one that fits your truck.





There are also 6 pages for the PCM/ECU, they are as follows: These are all for the 4.6L engine...







Hope this is what you were looking for, if not, let me and I will see if I can dig up the right diagrams.

 

See if this works>>>>>> see attachment. 4.6L 2V Timing

 

thank you HiDesertRat,

so im not receive any signal from the PCM to pin 31 or 32 for the four wheel drive switch. Is this just a bad PCM or are there other test i should do. i have already tested for a short to ground and wires and relays work perfectly. thank you for your help

 

Pins 31 & 32 are not a signal from the PCM, they are monitoring the resistance through the MSS (Mode Select Switch).

I assume you are getting no activity when you move the 4WD MSS, Have you attached a scan tool to the truck and pulled any codes from the PCM? Have you looked at live data on the scan tool and see if the "MSS PID" matches the actual position of the MSS?

If the PCM MSS PID does not agree with the actual MSS, you can check the MSS and its wiring. With the MSS connector unplugged, measure the resistance between pins 2 & 3 on the MSS. Your readings should be approximately: 619 Ohms with the switch in 2H, 270 Ohms with the switch in 4H, and 130 Ohms with the switch in 4L. If your readings are significantly different, suspect a faulty MSS. If all these are OK, Unplug the connector at the PCM and measure the resistance between the MSS connector and the PCM connector to be sure there isn't an open in the wiring (or short to 0V or 12V, but it sounds like you already checked this). Pin 2 on the 4WD MSS connects to pin 31 on the PCM, and Pin 3 on the MSS connects to pin 32 on the PCM. Spec states these should be less then 5 Ohms from MSS to PCM.

Hope this helps

 

hello @HiDesertRat,

for some reason when i click the image it changes the color to black and will not let me read the text can you please email it to me at miguel.a.d11@gmail.com also if you have the 5.4 engine version i would really appreciate it. thank you so much for your help.

 

hello Shadow351,

a little bit more about my story. the issue with my truck is an intermittent one, so i test most components when things are working for reference, then re compare when they stop.i received a wiring diagram from a friend of mine showing pin 2 on the ESOF (electronic shift on the fly) switch receiving signal from the PCM see attached image. when i back probed pin 2 on the ESOF i received 8 volts on 2wd 6 volts on 4hi and 4 volts on 2lo. this was with the system working perfectly. the next morning the 4wd gave me the 3 blinking lights letting me know that it was not working again. i redid this test and was not receiving any volts to the 2nd pin on the ESOF. which lead me to believe that i have a PCM issue. I also performed a short to ground test on these same wires to rule that out. my other question is are there any operating procedure that the truck must complete before allowing signal to the ESOF. or am i going about this incorrectly.i also checked all constant power fuses and wires as well as grounds. tomorrow i plan to check the wires to the electronic shift motor.

 

hello HiDesertRat,

If you would prefer as opposed to sending them via email a pdf would also work. I would really like to see the wiring diagrams you posted thank you for your time and help

 

so checking the whole system a little more. I am not getting any power to the electronic shift motor on the transfer case or the shift selector switch and now also the washer fluid pump. im not sure if these components are connected.

 

A flashing 4x4 indicator alerts you the PCM has detected a problem with the 4x4 system, you should run a code scanner on it to see what the PCM is detecting. (Unfortunately, I don't think the cheap generic OBDII scanners can pull these "extended codes", you may need something like Forscan or a more "professional" full featured scan tool)

Looking at my manual (its for an 04 but it should be the same for an 07), if both the 4x4 High and 4x4 Low indicators flash 3 times every 2 minutes this signifies "Loss of CAN bus communication", I would check to see if you can get a scan tool to communicate with everything on the CAN network (PCM, Instrument Cluster, ABS module), there could be something taking the CAN bus down intermittently which can cause all kinds of interesting issues.

 

HeHatesMe1: Been a few crazy days here, so haven't been on this forum. Will see about getting these sent off to you tonight. All for your 2004 F150 FX4 5.4L 3V?