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Originally Posted by shorod
Well, for the 2004 there is not a designation between the process for DATC with climate controlled seats versus without. Did all V8 models have climate controlled seats?
The manual claims you access the codes with the following sequence:
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The DATC module self-test through the front panel display:
can be initiated at any time. Normal operation of the system stops when the self-test is activated.
is entered by pressing the OFF and FLOOR buttons simultaneously and then pressing the AUTO button within two seconds . Record all DTCs displayed.
concludes by reporting all on-demand DTCs. Follow the diagnostics procedure given under ACTION in the DTC index for each DTC given.
reports individual on-demand DTCs as four-digit DTCs (less the alpha character).
will calibrate all the mode doors and check all analog inputs. The DATC module will only report on-demand (hard) faults that occurred while the DATC module was conducting its self-test.
will light all control panel display segments if no faults are detected.
will report individual on-demand DTCs without the °C symbol lit.
To exit the self-test, press the defrost button. This will clear all on-demand codes from the DATC module memory. If no button is pushed, DTCs will continue to be displayed.
Upon exit from the self-test the DATC module returns to operational status. The DATC module executes a hard (cold boot) reset which places the DATC system in the OFF mode.
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For what it's worth, I'm claiming success in getting the issue fixed on my wife's LS. My scan tool showed that the Evaporator Core Air Discharge temp sensor was not in range. There were no codes, but the datastream showed no changes in the reading and it appeared to be maxed out at 255 degrees F, even when the vent temp was 45 degrees F. Replaced the sensor and all has been well for 2 weeks of mixed weather.
-Rod
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Sorry for slow response , as I have to temp. stop at local library, I've tryed that before and it didnt work, but will try again, there is something I noticed the other day that the air compressor is not kicking off and on.... is there something I can check, it was almost dark when it dawned on me it wasnt clicking off and on..