I disconnected the positive cable from the battery on a 2001 kia sedona van, and now the radio will not come on.

Push the lock button on your key fob for three seconds, until the lights on your dashboard blink. Your key has been reprogrammed, and your alarm and computer have been reset. Turn your Kia off, remove the jumper wires and close the hood.

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1 Disconnect negative battery cable
2 unplug wire connector
3 disconnect positive wire (the bigger wire) usually has a nut or bolt to hold it on

4 their will be 2 bolts to hold the starter in place that need to be removed. they will most likely pass through the trans bell housing and thread into the starter motor.

5 starter should pull easily off the car

to reassemble reverse the steps

Don't worry I'm sure you will get the solution of your problem, just check the link I
attached
KIA CARNIVAL SEDONA SERVICE REPAIR MANUAL 2002 2003 2004 2005 DOWNLOAD

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
   
2. Record the radio anti theft code data.
   
3. Remove or disconnect the following:
   
   • Negative battery cable
     
   • On 2002—05 vehicles, shift cable
     
   • Starter motor electrical connectors
     
   • On 2002—05 vehicles, starter heat shield
     
   • Starter motor
     Starter motor mounting—3.5L Engine
     

To install:

1. Install or connect the following:
   
   • Starter motor. Tighten the bolts to 20–24 ft. lbs. (27–33 Nm).
     
   • On 2002—05 vehicles, starter heat shield
     
   • Starter motor electrical connectors. Tighten the battery terminal nut to 106–141 inch lbs. (12–16 Nm).
     
   • On 2002—05 vehicles, shift cable
     
   • Negative battery cable
     
   • Reprogram the radio anti theft codes
     

The starter is between the radiator and engine, there is a bolt thru the transmission and a bolt with a nut below it to remove. You'll need to disconnect the positive cable on the battery. Unbolt the cable from the solenoid and unplug the connector on the solenoid. The wires going to the starter are bolted to the transmission mount, it might be helpful unbolting that to get a little more slack in the wires.

As long as you have the code, the Kia shop should be able to put back the code without a charge.

it is located on the drivers side underneath the van. you have to remove it from the underside of the car. you will need a 17 millimeter socket or wrench. Remove the ground cable before attempting to remove the starter.

I believe the Kia has 2 fuses for the radio, one in the cabin, and one in the engine compartment. Check them both. If they are good, your radio is toast.