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You have to have the codes read. It will take a scanner, not a code reader. Could be as easy as replacing the battery in the FOB. Could be a whole lot more. To much to guess at.
Check ignition switch fuse. This
is a 20 Amps. see that it has not blown. In 2004 Fuse should be nr 8 in
the power box under the hood (newer models #24).
Once you are
sure that battery, fuse and wires are OK, check starter and ignition
switch. Check if there is 12V to starter while cranking. If there is
power and the starter motor does not turn, then the motor is gone. If
there is no power to starter motor when you crank, then the ignition
switch located inside the steering column may need replacement. Before
repairing, try reading error codes with a code scanner.
Not exactly. The scanner doesn't get its power from the computer of the car, but from another pin, which is the 16. You may have some blown fuses to the computer, which could be the same fuse for the pin 16 which is the power for the scanner. You can check on the Data Link Connector pin 16 if you have 12v, if you don't start looking for blown fuses.
Theres more than one reason. The timing belt could have stripped and the dist. and the cam arent turning. Power to the coil could have failed ingtion fuse blown. Power to the engine control computer could have failed and the check engine light is'nt on with the key on but not running. Pulling codes with a scanner may find other problems like no crank sense or no ingtion power while cranking. Did the car stop running while driving or did'nt it just not start? The engine was cold when you last checked for spark?
check both of your fuse panels for a blown fuse. there's 4-5 that control the fuel pump, engine sensors, fuel injectors and such. one of those may be blown and not letting the rest of the system function. one panel is located under hood, and one is under the dash on drivers side. when you take the covers off they have the fuses numbered and tell what they control.
I am not sure why your truck isn't cranking; however, I have had the same problem with no power to the diagnosis connector. There is a fuse box under your hood, look for the cigarette lighter fuse. I'll bet it is blown. Replace the fuse and you will have power to the port.
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