Hi im having a no crank no start issue with my 2004 2.3 5 speed manual

[puresin5187]

long story short at key on The check engine light does not come on. The only lights that come on are Parking brakes, abs, the little oil can, and door ajar cuz I had the door open

 

[RonD]

ive replaced the transmission, clutch safety switch and battery checked all fuses and relays, has all lights inside and out, power to both 12v power points and power to the obd2 port but when i scan it fail to link with the vehicle and the pats light flashes which is normal but continues to flash when ignition is in the on position which i down remember it doing before , i also dont think the fuel pump is turning on which was replaced about 6 months ago along with the fuel filter, i can get the start to crank if i cross the solenoid but never fires up been trying to figure this out going on 2 months someone please help!

Lets start from the beginning

Current

long story short at key on The check engine light does not come on. The only lights that come on are Parking brakes, abs, the little oil can, and door ajar cuz I had the door open

So no Flashing Theft light and no CEL

Get your 2004 owners manual here: https://www.ranger-forums.com/general-technical-electrical-18/ford-ranger-owner-manuals-1996-2011-models-3747/

Fuse and relay locations start around page 138
Makes sure you are looking at 2.3l model

Symptom reads like a fuse is bad or PCM relay is not working
In Engine fuse box check fuse 11, 30amp, it powers the PCM, test it with ohm meter or swap it with another 30amp fuse

Put you finger on PCM relay(54 in engine fuse box) and have someone turn the key on, you should feel relay "click" on, key off, it goes off, repeat to make sure its working
If not then you will need to go inside to SJB(cab fuse box), and not sure where the power diode is for this, just have to have a look in the cab fuse box






2004 Ranger with 2.3l Duratec and manual transmission

 

[puresin5187]

Lets start from the beginning

Current


So no Flashing Theft light and no CEL

Get your 2004 owners manual here: https://www.ranger-forums.com/general-technical-electrical-18/ford-ranger-owner-manuals-1996-2011-models-3747/

Fuse and relay locations start around page 138
Makes sure you are looking at 2.3l model

Symptom reads like a fuse is bad or PCM relay is not working
In Engine fuse box check fuse 11, 30amp, it powers the PCM, test it with ohm meter or swap it with another 30amp fuse

Put you finger on PCM relay(54 in engine fuse box) and have someone turn the key on, you should feel relay "click" on, key off, it goes off, repeat to make sure its working
If not then you will need to go inside to SJB(cab fuse box), and not sure where the power diode is for this, just have to have a look in the cab fuse box






2004 Ranger with 2.3l Duratec and manual transmission

I have flashing theif light but no check engine light

Sorry i forgot to put that part with the lights that were on because theif is flashing and no check engine light

 

[RonD]

CEL off = your computer is off.............so theft light will flash because it can not "talk" to computer

 

[puresin5187]

CEL off = your computer is off.............so theft light will flash because it can not "talk" to computer

Any idea why the computer would be off?. Also i had a buddy that said taking my factory seats out while it was broke down and it dying the computer reset realized they weren't there and he thinks that's what caused it is there anything to this?

 

[RonD]

No, it would set codes if seat belts weren't plugged in but only if computer was on, lol

SRS light would also cone on

Test computer the fuses for 12volts

 

[puresin5187]

Okay well if it's not the fuses or a relay what else could it be other than that?

 

[RonD]

Computer is DEAD

 

[puresin5187]

Ok i got the new pcm ive hooked it up and it still acts and responds the same ? No check engine light pats flashing and same other lights that light up and the obd2 port still can not connect to the vehicle with either PCM and I've read that you should always be able to check codes

 

[RonD]

Yes, the computer is NOT powered on, so no CEL and NO OBD2 connection

Not sure what you want us to do?

You are there we are not
Test PCM fuse to see if it has 12volts
Test if PCM relay has 12volts
test if PCM relay "clicks" closed with key on

Test the 2 red wires on pins 71 and 97 on the PCM connector, they should both have 12volts with key on, IF..............above is OK

 

[puresin5187]

Yes, the computer is NOT powered on, so no CEL and NO OBD2 connection

Not sure what you want us to do?

You are there we are not
Test PCM fuse to see if it has 12volts
Test if PCM relay has 12volts
test if PCM relay "clicks" closed with key on

Test the 2 red wires on pins 71 and 97 on the PCM connector, they should both have 12volts with key on, IF..............above is OK

That's what i needed to know ill update when im done

 

[puresin5187]

Okay found some corrosion in the fuse box under the hood fix the wire that had came off and corrosion. I cleaned all of the grounds again still same problem but I have around 112 ohms between the CAN lines but I can't seem to find the wiring diagram for the 04 Ranger to find the resistors and modules that are all connected anyone have any links? And possibly some pinout diagrams for the PCM plug

 

[puresin5187]

*****UPDATE*****
I had Found some corrosion in the fuse box under the hood and didn't think it fixed it checked over again a couple of loose wires and boom six so thank you to everyone I hope this information helps others in the future and thanks again everyone

 

[puresin5187]

FYI IF YOU ORDER A NEW PCM FROM FLAGSHIP ONE WITH KEYS FROM THEM ON A 2004 YOU DO NOT HAVE TO HAVE THEM REMARRIED AT THE DEALERSHIP I PUT MINE IN AFTER I GOT IT TO STARTED AGAIN AND IT RUNS JUST LIKE THE ORIGINAL ONE WOULD AND THE ONLY THING I GAVE THEM WAS MY VIN NUMBER

Hope this helps someone