Atc System Test - Chrysler Concorde 2004 Service Manual

Symptom:

*ATC SYSTEM TEST

ATC SYSTEM TEST
TEST
1 Ensure there is vehicle communication with the Body Control Module, the Automatic
Temp Control Module (head) and the Powertrain Control Module before proceeding.
If not, refer to the Communication category for the related symptom.
With the DRBIII , read Engine DTC's. If any climate control related DTC's are
present, refer to the appropriate category for the related symptoms.
With the DRBIII , read Body DTC's. If any climate control related codes are present,
continue to the next step. If no codes are present, recalibrate the doors & BCM and
recheck the system.
Record and erase the code(s).
Set the temperature control at 75°, start the engine and with the DRB Read DTC's.
If no code appears, slowly turn the temperature control from 65° to 85°, then back to
65° while observing the DRB for codes. If a code appears, refer to the Heating & A/C
category for the related symptom.
If a code still does not appear, turn the ATC control from 60° to 90°, then back to 60°.
Push each mode button waiting 20 seconds between each one. Upon seeing the first
code appear, stop, erase the code and perform the appropriate test.
If no codes appear, re calibrate the doors by pressing and holding the floor, mix and
defrost buttons at the same time until the display starts to flash. Observe the DRB
for DTC's.
When the first code appears, record that code and allow the system to finish
calibration.
NOTE: If multiple codes appear, repair any that relate to a short circuit
first. If a short to battery code is set, all 4 Output Shorted to Battery codes
will appear. It will then be necessary to isolate each circuit to determine
which is at fault.
Erase the DTC(s) and refer to the Heating & A/C category for the related symptom
of the first code that appeared.
If no codes have appeared, press repair.
Repair
POSSIBLE CAUSES
ACTION
Re calibrate the doors, reset the BCM and ATC Head and recheck
the ATC system performance.
Perform BODY VERIFICATION TEST - VER 1.
331
HEATING & A/C
APPLICABILITY
All