EATC self test:
NOTE: Self diagnostics should be run in ambient temperatures of at least 10°C (50°F). Record all diagnostic trouble codes displayed during self diagnostics.
If the concern(s) remains after the inspection, perform the following EATC On-Board Self Diagnostics Test:
a. Turn ignition switch (11572) to RUN position.
b. Push both OFF and FLOOR buttons simultaneously, then press AUTO within two seconds.
c. NOTE: Display will be blank during testing.
After about 20 seconds, a code will appear in the window. Refer to the following Diagnostic Trouble Code Directory to identify the error for the proper diagnostic procedure:
DIAGNOSTIC TROUBLE CODE DIRECTORY
Diagnostic Trouble Code/Description/Action
01/Damaged control assembly./GO to Pinpoint Test A.
02/AC air temperature control door/GO to Pinpoint Test B.
03Automatic temperature control sensor openGO to Pinpoint Test N.
04/AC ambient air temperature sensor/GO to Pinpoint Test H.
05/AC sunload sensor short./GO to Pinpoint Test J.
d. To exit the diagnostics function press the blue button. When the control assembly is turned back on, the A/C air temperature control door will self-calibrate for 20 seconds.
If no DTCs are generated as a result of the self-diagnostic test (88°F°C code is displayed), determine the symptom(s) and go to the Symptom Chart.
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