schematics and diagrams: keyless entry not working

Thursday, June 21, 2012

2000 Jeep Cherokee Limited: KeyFob Remote Not Working?

Key less remote not working.
There are few possibilities that can cause the problem.

In the remote there is a battery.First replace the battery and see if problem goes away.IF no,then it can be faulty remote or it can be issue with remote lost its connection with vehicles receiver or there is faulty fuse,which controls this system.

I will explain each problem as you read further:----

WHERE IS THE FUSE WHICH CONTROLS THE KEYFOB REMOTE:----

It looks like it is fed via FUSE #16 15A that is located in the Power Distribution Center. This Fuse supplies power to other components such as : cargo lamp switch, underhood lamp, courtesy lamps, cluster, radio.

The Power Distribution Center is located under the hood.

See the fuse diagram shown below:----
jeep Cherokee fuse box diagram

IF FUSE CHECKS OUT OK,THEN GIVE DETAILS FOR OTHER POSSIBILITIES:---
The very first thing to do is to check whether your remote works or not. Unfortunately there is no way to check it without using special TPM-RKE analyzer CH9936 that any Chrysler dealer should have. This is very useful analyzer that tells in a second if a remote is good or not. If remote is OK, then for some reason it could be lost from the receiver memory and needs to be programmed with a special DRB III scan tool.

If you have 2 keyfob remotes then it will be good to confirm the problem with remote or its receiver issue.
By remote I mean a key-fob. If both remote transmitters do not work, then it sounds like a Remote Keyless Entry module/receiver failure. Check all fuses to be sure it gets power/
If this fuse is blown, just replace it with the same rating 15A fuse. If it pops up again, then you have a short circuit somewhere and it needs to be diagnosed and fixed.

This all details will help.
Thanks.

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After getting car washed, check engine light is ON and key less entry not working, tried reprogramming. Also car shows fuel pressure?

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Friday, December 2, 2011

After getting car washed,check engine light is on,and key less entry not working,tried reprogramming.Also car shows fuel pressure?

If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

Its not one but many problems.Its a multiple problem issue,there are many possibilities for this.
The Keyless entry would not change the Electronic chip in your Ignition key. The Ignition key has an embedded Code which requires Special settings a Dealer must do aside from you programming a Blank Key. Just use your Key to mechanically enter the car if in doubt.
The "Check Lights" are telling you that some component is not working properly. It has identified the problem and a Scanner will display the problem for you to repair or replace the bad part.
There is most likely a direct correlation between wetting the engine and the problem. Sometimes it takes a few hours for water to run into the wrong place so you can not discount water from being the problem instead of reprogramming the door-locks.
If your car were running, you could get a free scan at any Autozone, Advance, or Oreilys parts store. Some have tool loaner programs and you need a Scanner.
If you car runs, but idle too slow.Then your TPS could be completely out. Easy to replace and under $25.TPS means throttle position sensor.
Now you say you have fuel pressure, but it could be residual pressure before a safety switch called an "Inertia" sensor cut off the juice to the fuelpump. There is a reset on this part once you locate it. It can disconnect with an impact of closing a door hard or the hood. Usually this switch is behind one of the front kickpanels or under a plastic cover in the cargo area.
The scanner I mentioned can run from $50 to $300 depending on what you want it to check.
You can have the same bad part(TPS) on your car or about 30 or 40 other parts. You need to check what the scanner tells you. You can find the TPS on the air bonnet and it is usually opposite where the throttle linkage moves the Butterfly flap. Usually 2 screws and 1 electric plug. Without removing the TPS, just unplug the connector and put an Ohmmeter on both wiring leads from the part, not the wiring loom of the car.
Without having the key in the Ignition, just turn on the OHMS function and then move the throttle linkage it is associated with. The Ohms should move steadily and if it does not, then that part is bad.

This basic troubleshooting will help you to test and inspect the problem. Thanks.

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