The first thing to do is to be sure the computer is awake. Turn the key on and check reference voltage to the tps, cam and crank sensors. If there is full reference voltage, check to be sure the ASD relay is engaging when trying to start the engine and that there is power to the injectors and coil/coils when cranking. IF there is no power to the injectors or coil when cranking and the ASD relay is not engaging, then we might have a bad cam or crank sensor (or a valve timing issue).If there is no reference voltage to these sensors with the key on, then the computer might not be waking up. We will need to check all powers and grounds going into the computer with the key on. This includes, all powers through the computer fuses, fusible links and even the ignition switch.Hint: Sometimes the cam and crank sensors can short out and pull the computer down temporarily. If all powers and grounds check out and we still do not have any reference voltage to the cam, crank or the tps, then disconnect them one by one with the key on to see if the reference voltage comes back. If so, then one of the sensors is bad and will need to be replaced.
If you have a 3.0 liter engine, you should get a 5 volt reference to the cam and crank sensor with the key on.
If you have a 2.7 liter, you should have a 8 volt reference to the cam and crank sensor with the key on.
I hope this helps. You can always accept my answer now, and repost back again later on if you have any more questions. If you want to discuss it some more just hit "reply", it's free to do so otherwise don't forget to hit "accept" and leave positive feedback if you found my answer helpful.
what is the tps and where is it?
Thanks so much?
Ok... so the engine starts and the car runs?
We need to check power down at the aldl connector with the key on in pin 16.
Check fuse number 5 and the iod fuse. If both fuses are god, check to be sure that the fuses have power to them with the key on.
Try to Disconnect the battery for 15 minutes. Reconnect making sure the key is in the "off" position.
where is the number 5, is that on the side of the dash?
and where is the iod fuse?
The IOD fuse should be in the fuse box.
I am going to try and get you the locations of this IOD fuse.
Meanwhile, you can try to do a self check to correct the speedo.
THis is done by putting the key in the lock position, push and hold the trip reset button, turn the key to the unlock position and release the button. The gauges will normally sweep and all the indicators will turn on and turn off. This will normally fix the problem. Check for loose battery cables, dirty battery cable connections, jump starting, battery being disconnected for the cause of this problem.
Ok... here is the location of the IOD. Iti might even be a relay.
would this also affect door locks?