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  #16 (permalink)  
Old 09-29-2010, 10:05 PM
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whick one is the # 5 fuse? if i had more info on that maybe i could fig it out
ALMOST THERE!!! i hope anyways

Quote:
Originally Posted by latech
On the plug for the pcm the pin in number 3 position should be Red with White stripe. It should be 12 volts all the time

Pin 9 should be yellow with white stripe and should have power with the key on
It has a fuse in the fuse box fuse number 5 it is 10 amp. I think it is in the fuse box under the dash not the one under the hood. Check both again to be sure.
If you have these 2 input voltages and the reference voltage you tested earlier is not there the the pcm puked.

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  #17 (permalink)  
Old 09-29-2010, 10:05 PM
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that wire is fed thruogh the fuse box by the ignition switch. It goes through fuse number 5. Should be a 10 amp. Probably under the dash fuse box not under hood
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  #18 (permalink)  
Old 09-29-2010, 10:12 PM
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i just ran a wire from that yellow wire to another wire that gets power when the key is on and still nothing. i dont have a 10 A fuse under the dash. bad ignition switch? could i run a positive wire to the wire that gives both those sensors power?
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  #19 (permalink)  
Old 09-29-2010, 10:14 PM
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fuse number 9 shares the same buss from the ignition so see if it has power with the key is on and verify it is ok along with fuse number 5.
If 9 is hot and 5 is not the problem is in the fuse block buss bar. check fuses with the key on and check both sides with a test light to make sure they are good.
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Old 09-29-2010, 10:23 PM
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the thing is i dont know what fuses are what numbers
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Old 09-29-2010, 10:26 PM
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This is under the dash.Check fuse 5.and fuse 9
Dont do any jumpering unless you ARE ABSOLUTLEY SURE you have the right wire.
If they are not hot with key on check fuses labeled F4 and F6 in the underhood compartment.they should be allways hot.If they are hot and 5 and nine are not (with key on ) then you have an open circuit in the bulkhead connector or a bad ignition switch
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Old 09-29-2010, 10:28 PM
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Gotta go. Sandman is kicking my butt.
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  #23 (permalink)  
Old 09-29-2010, 11:01 PM
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yea mine too umm ya checked all the fuses and they are all good
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Old 09-30-2010, 06:59 AM
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if you are sure that you had the yellow with white at pin 9 of the pcm and it had no power with the key on then It would have to be an open circuit it the wiring.If fuse 5 in the fuse block is hot with the key on then the yellow with white should be hot.
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Old 09-30-2010, 06:06 PM
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the fuse is hot but the wire is not
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  #26 (permalink)  
Old 09-30-2010, 06:33 PM
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I was wrong on the wire color for pin 9 at the pcm . It is white with yellow stripe not yellow with white stripe.
SO go to the pcm connector and go to PIN 9 and LOOK at the WHITE wire with YELLOW stripe . It should be hot with the key on.This is why I was so
adament about NOT jumping any wires as I made a mistake on wire color and you did not see the reverse coloring on the wire on pin nine.I assume you saw white and yellow but I was saying yellow and white.
The WHITE with YELLOW STRIPE wire ( my bad) is fed directly from fuse 5 (10 amp) in the fuse box under the dash. It comes off the fuse as a white wire with yellow stripe and goes into the harness to the bulkhead connector and passes through it to the harness on the firewall then to the pcm.
As a quick locating method probe the wire at pin nine on the pcm with the key on. Wiggle the wire harness at the bulkhead connector and see if you get any light or flickering (like a house lamp with a bad cord)
when you get a light or flickering light by wiggling that is a good indication you are close to the open in the circuit.
I apologize for the mistake on the wire color as it may have cost some time and caused problems.
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  #27 (permalink)  
Old 10-01-2010, 09:28 AM
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its not a big deal thsnk yoi for all your help ill be checking it out tonightg
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  #28 (permalink)  
Old 10-02-2010, 11:43 AM
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ok heres the issue. i now have power at the WHITE wire with a YELLOW STRIPE. where do i go from here?
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  #29 (permalink)  
Old 10-02-2010, 02:26 PM
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just noticed the pcm is making a high pitched noise that has a pulse to it? good or bad
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  #30 (permalink)  
Old 10-02-2010, 10:06 PM
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replace the pcm. Its cooked.The ignition coil probably took it out.(good thing you allready replaced the coil)
Good goin.
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