Where are the heated seat relay and seat heat interface module - JeepForum.com

 
LinkBack Thread Tools
post #1 of 4 Old 02-21-2011, 07:11 AM Thread Starter
sw19
Registered User
1999 XJ Cherokee 
 
Join Date: Oct 2005
Location: Brooklyn, NY
Posts: 59
Where are the heated seat relay and seat heat interface module

Where exactly are these two components located? The heated seats in my '99 Cherokee Limited stopped working. The lights on the switches all function properly. Green backlights come on. And, the orange lights glow steady. This leads me to believe the problem is in the heated seat relay or the seat heat interface module.
I don't want to start removing/opening stuff that I don't have to to get to these 2 parts. So, if anyone can isolate the exact area it would be greatly appreciated.

sw19 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 02-21-2011, 07:31 AM
CJ7-Tim
Real Jeeps have dents
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 24,593
SEAT HEAT INTERFACE MODULE
The Seat Heat Interface Module (SHIM) is an electronic
microprocessor controlled device designed to
operate the electric seat heater elements. The SHIM
is located under the right front seat cushion. Inputs
to the module include the console mounted resistor
multiplexed switch signals, seat cushion temperature
sensors, a relay-switched battery feed, and a ground.
The SHIM outputs are the feed for the seat heating
elements and sensors, and the switch telltale circuits.
The SHIM cannot be repaired and, if faulty or damaged,
it must be replaced.

HEATED SEAT RELAY
The heated seat relay is located under the right
front seat cushion near the SHIM. Ignition and battery
power is fed to the relay, which then provides a
switched battery feed to the SHIM. The heated seat
relay cannot be repaired and, if faulty or damaged, it
must be replaced.

The heated seat system is capable of performing
some self-diagnostics. The following table depicts the
various failure modes which will be reported to the
occupant via flashing the momentary switch telltales.
The switch telltales will flash on the driver’s switch
if the failure exists in the driver’s seat portion of the
system, similarly with the passenger’s switch. The
telltale will illuminate for approximately a 1⁄2 second
on, 1⁄2 second off pulse for a duration of one minute.
This process will repeat every time the system is initiated
via the switches until the problem has been
corrected.
Attached Thumbnails
seat.jpg  

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
post #3 of 4 Old 03-11-2011, 11:45 AM Thread Starter
sw19
Registered User
1999 XJ Cherokee 
 
Join Date: Oct 2005
Location: Brooklyn, NY
Posts: 59
Thanks CJ7-Tim. Now, do I need to remove the seat cover or, is it accessible from under the seat?
sw19 is offline  
post #4 of 4 Old 03-11-2011, 02:02 PM
CJ7-Tim
Real Jeeps have dents
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 24,593
I have never seen one myself. I would assume you can physically trace the wire harness and located the modules that way.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Heated Seat repair msu-dawg XJ Cherokee Technical Forum 43 02-10-2013 05:16 PM
heated seat wont heat 99xjjoe XJ Cherokee Technical Forum 2 03-05-2009 09:58 PM
Heated seat conversion Ubie XJ Cherokee Technical Forum 3 05-26-2007 04:58 PM
Heated seat question bluexjltd XJ Cherokee Technical Forum 6 02-06-2007 08:07 PM
heated seat problem zogo XJ Cherokee Technical Forum 2 01-30-2005 08:28 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome