20 Most Recent 2003 Jeep Wrangler - Page 2 Questions & Answers

All you hav to do is disconnect the battery. Some say to wait ten minutes but in my experience the codes woll clear after a momentary disvomect.

same , as in location or same as in , same gear ratio? and there are many submodels of jk, like rubicon? what is your concern?

Sounds like the resistor block that controls your blower motor has started to go.this is a replace only to fix this problem.Go along to your local parts store and see if you can get a new one,if not its to the dealer.With the new part in hand go under the dash on the passenger side,and look for a loom of wires that will be close to the blower motor.The resistor block will be in the air box somewhere( for cooling purposes) and is usually held on with two screws. disconnect the wires first then remove the block.reverse for install.good luck

Module,all coils.

When you push on the brake pedal do the brake lights come on? I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

change oil of your transmission if not so you need check your transmission.

just a flash light and 5min. looking finds 99% bad fuses. why do you need to know the exact one? here is the full FSM> see wiper wiring, its fuse #17 runs the front. it runs the waster too, so if that works its not Fuse 17. or any fuse ,. 17 is marked FRT WIPE see power distrubution page 3. top left corner fuse. if the fuse is good we use a voltmeter to find out what really is bad. ask.

Have you checked the brake fluid in the master cylinder, and the parking brake switch ?

Well it really doesn't matter much. I would probably clear the codes and see which ones come back first. Code 123 is for the throttle position sensor signal being out of range. Could be the sensor or a wiring problem. Code 155 is for a problem with the heater circuit going to O2 sensor bank 2 sensor 1. Thats on the side with cylinder two if you have a V6 engine. Could be the sensor but its usually the lack of power for the heater. Code 306 is for loss of power from cylinder 6 which could be mechanical, fuel, or spark related. The three codes are not connected to each other. And trouble codes are not a statement to replace parts, only what to test.

turn up the dash light dimmer if that dont work its a bad fuse. check fuses.

locker bypass?

You need fuel and spark to run. Check these and come back!!

It can not be disbled but it can be defeated. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Probably a poor connection in that blower switch. I`m not sure how the ignition is affecting that.