help w/ resetting a/c

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...

SteveBrady did pass the time by typing:

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.

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 knob 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.

stevebrady, i mean HI on the Temp setting

dougw, the fan works fine there is no warranty left, never got around to taking it in for warranty work :( it's only an issue in the winter i have to continuously turn the heat on & off to keep temp comfortable i'll try the a/c test tonight i thought i once read you could change settings by using some of the same sequences you described to run the test

thanks shane

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+willys From: snipped-for-privacy@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 Reply to Author | Forward | Print | Individual Message | Show original | Remove | Report Abuse

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+willys From: "DougW" - 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 Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse

SteveBrady did pass the time by typing:

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.

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 knob 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

snipped-for-privacy@netscape.net did pass the time by typing:

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

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.

Yep

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.

DougW did pass the time by typing:

ARG! Hit the wrong bloody key. :)