RE: help w/ resetting a/c - Jeeps Canada

Feb 13, 2005 | 05:29 PM

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#1

shanekennedy00@netscape.net

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RE: help w/ resetting a/c

i ran the test described by dougw
after holding a/c & recirc buttons down & turning temp
all segment lit up
i then pressed the a/c button w/ no results
also no results when depressing the recirc button
instead of seeing 00
the display cycled thru the following codes: 39 52 54 56
are these err codes
can anyone decipher them

thanks
shane

Newsgroups: rec.autos.makers.jeep+******
From: shanekenned...@netscape.net - Find messages by this author
Date: 3 Jan 2005 09:48:59 -0800
Local: Mon, Jan 3 2005 9:48 am
Subject: help w/ resetting a/c
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on my 02 ltd, the heater only comes on when you turn the temp dial to
HI. doesn't matter what is temp inside or outside. if you turn dail
from HI to 85, it blows cold air. this has been the case since i bought

the jeep. i remember reading once the hvac was user programmable. i was

wondering if anyone knows how to reset the programming.

thanks
shane

SteveBrady remove this Jan 3, 10:09 am show options

Newsgroups: rec.autos.makers.jeep+******
From: "DougW" <post.repl...@invalid.address> - Find messages by this
author
Date: Mon, 3 Jan 2005 12:33:36 -0600
Local: Mon, Jan 3 2005 10:33 am
Subject: Re: help w/ resetting a/c
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SteveBrady did pass the time by typing:

> do you mean HI fan speed? or HI on the temperature setting?!
> If it's HI on the fan speed then I think someone mentioned a similar
issue
> with the relay or was it a resistor pack...

Dead relay = no high fan speed on the automatic system
(doesn't exist on manual systems)

Dead resistor pack = only high fan speed on automatic systems
nothing or just high speed on manual systems

Temp dial adjusts the blend door (stepper motor) for automatic systems.

> shanekennedy00 wrote ...
>> on my 02 ltd, the heater only comes on when you turn the temp dial
to
>> HI. doesn't matter what is temp inside or outside. if you turn dail

>> from HI to 85, it blows cold air. this has been the case since i
bought
>> the jeep. i remember reading once the hvac was user programmable. i
was
>> wondering if anyone knows how to reset the programming.

I'd be taking it back if there is any warranty left.
The system is not user programmable unless you have a DRBIII scantool.
There are diagnostics built in but this is for the 93-95 ZJ. May still

work. YMMV

Turn the key to (on)

- Depress both A/C and RECIRC buttons (and hold them down)
- Turn the temp **** one click clockwise

All segments should light up.

- Release the A/C and RECIRC buttons

You are now at the "select test" level and the display should
show 00

- Push either A/C or Recirc (just one) and release

You should see the little stickman and numbers cycling.
(record the numbers)

- Turn off the key to exit.

Then post back here. There are too many tests to type them all up.

--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

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Feb 13, 2005 | 05:53 PM

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#2

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

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Re: help w/ resetting a/c

http://www.wjjeeps.com/faultcodes.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

shanekennedy00@netscape.net wrote:
>
> i ran the test described by dougw
> after holding a/c & recirc buttons down & turning temp
> all segment lit up
> i then pressed the a/c button w/ no results
> also no results when depressing the recirc button
> instead of seeing 00
> the display cycled thru the following codes: 39 52 54 56
> are these err codes
> can anyone decipher them
>
> thanks
> shane

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Feb 13, 2005 | 05:53 PM

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#3

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

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Re: help w/ resetting a/c

http://www.wjjeeps.com/faultcodes.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

shanekennedy00@netscape.net wrote:
>
> i ran the test described by dougw
> after holding a/c & recirc buttons down & turning temp
> all segment lit up
> i then pressed the a/c button w/ no results
> also no results when depressing the recirc button
> instead of seeing 00
> the display cycled thru the following codes: 39 52 54 56
> are these err codes
> can anyone decipher them
>
> thanks
> shane

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Feb 13, 2005 | 05:53 PM

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#4

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

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Posts: n/a

Re: help w/ resetting a/c

http://www.wjjeeps.com/faultcodes.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

shanekennedy00@netscape.net wrote:
>
> i ran the test described by dougw
> after holding a/c & recirc buttons down & turning temp
> all segment lit up
> i then pressed the a/c button w/ no results
> also no results when depressing the recirc button
> instead of seeing 00
> the display cycled thru the following codes: 39 52 54 56
> are these err codes
> can anyone decipher them
>
> thanks
> shane

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Feb 13, 2005 | 06:14 PM

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#5

DougW

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Re: help w/ resetting a/c

shanekennedy00@netscape.net did pass the time by typing:
> i ran the test described by dougw
> after holding a/c & recirc buttons down & turning temp
> all segment lit up

That's good. First step is the lamp test. :)

> i then pressed the a/c button w/ no results
> also no results when depressing the recirc button
> instead of seeing 00
> the display cycled thru the following codes: 39 52 54 56
> are these err codes

Yep, pressing eitehr A/C or Recirc will start the error codes
scrolling. You will only see 00 if there are no error codes in
memory. To clear historic faults simply hold down A/C or Recirc
for about three seconds till -- appears in the display.

> can anyone decipher them

Yep

39 Mode door feedback circuit is open (disconnected or broken wire)
52 Blend Air Door Actuator not responding
54 Mode door travel range was too large
56 Blend Air door travel range was too large

My first thought is the harness to the ATC module or motors
is loose.

....
There are a lot of diagnostic tests. Let me scan a few pages for
you to read over.

Had to shrink them a bit. They will be there for about 12 hours
before they get swept off the temp directory.

http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg

--
DougW

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Feb 13, 2005 | 06:14 PM

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#6

DougW

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Posts: n/a

Re: help w/ resetting a/c

shanekennedy00@netscape.net did pass the time by typing:
> i ran the test described by dougw
> after holding a/c & recirc buttons down & turning temp
> all segment lit up

That's good. First step is the lamp test. :)

> i then pressed the a/c button w/ no results
> also no results when depressing the recirc button
> instead of seeing 00
> the display cycled thru the following codes: 39 52 54 56
> are these err codes

Yep, pressing eitehr A/C or Recirc will start the error codes
scrolling. You will only see 00 if there are no error codes in
memory. To clear historic faults simply hold down A/C or Recirc
for about three seconds till -- appears in the display.

> can anyone decipher them

Yep

39 Mode door feedback circuit is open (disconnected or broken wire)
52 Blend Air Door Actuator not responding
54 Mode door travel range was too large
56 Blend Air door travel range was too large

My first thought is the harness to the ATC module or motors
is loose.

....
There are a lot of diagnostic tests. Let me scan a few pages for
you to read over.

Had to shrink them a bit. They will be there for about 12 hours
before they get swept off the temp directory.

http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg

--
DougW

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Feb 13, 2005 | 06:14 PM

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#7

DougW

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Posts: n/a

Re: help w/ resetting a/c

shanekennedy00@netscape.net did pass the time by typing:
> i ran the test described by dougw
> after holding a/c & recirc buttons down & turning temp
> all segment lit up

That's good. First step is the lamp test. :)

> i then pressed the a/c button w/ no results
> also no results when depressing the recirc button
> instead of seeing 00
> the display cycled thru the following codes: 39 52 54 56
> are these err codes

Yep, pressing eitehr A/C or Recirc will start the error codes
scrolling. You will only see 00 if there are no error codes in
memory. To clear historic faults simply hold down A/C or Recirc
for about three seconds till -- appears in the display.

> can anyone decipher them

Yep

39 Mode door feedback circuit is open (disconnected or broken wire)
52 Blend Air Door Actuator not responding
54 Mode door travel range was too large
56 Blend Air door travel range was too large

My first thought is the harness to the ATC module or motors
is loose.

....
There are a lot of diagnostic tests. Let me scan a few pages for
you to read over.

Had to shrink them a bit. They will be there for about 12 hours
before they get swept off the temp directory.

http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg
http://members.***.net/wilsond/temp/24-15.jpg

--
DougW

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