Atc Head Led(S)/Back Lighting Inoperative - Chrysler Town and Country 2003 Owner's Manual

AUTOMATIC TEMPERATURE CONTROL
Symptom:

*ATC HEAD LED(S)/BACK LIGHTING INOPERATIVE

CHECK FOR ATC DTCS
CHECK FOR BCM DTCS
ATC - LED(S) INOPERATIVE
ATC - BACK LIGHTING INOPERATIVE
PANEL LAMPS DRIVER CIRCUIT OPEN
BODY CONTROL MODULE - PANEL LAMPS DRIVER OPEN
TEST
1 Turn the ignition on.
With the DRBIII , read ATC DTCs.
Does the DRBIII display any ATC DTCs?
Yes → Return to the symptom list and choose the symptom(s).
→ Go To 2
No
2 Turn the ignition on.
With the DRBIII , read the BCM DTCs.
Does DRBIII
Output Short?
Yes → Refer to symptoms Headlamp Switch Mismatch, Headlamp
→ Go To 3
No
3 Turn the ignition on.
Turn the ATC Power switch on.
NOTE: Compare with a known good ATC Head.
Operate all ATC switches (Front Fan, Rear System, Temp, Mode, A/C, Recirc, Rear
Defog) while looking at the display and lights on the ATC Head.
Are all of the LEDs operating properly?
Yes → Go To 4
→ Replace the ATC in accordance with the Service Information.
No
POSSIBLE CAUSES
ACTION
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
display Headlamp Switch: Mismatch; STG; Open; or Panel Dim
Switch Shorted To Ground, and Headlamp Switch Open in the
Exterior Lighting catagory. Refer to symptom Panel Dimming
Output Short in the Instrument Cluster catagory.
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
258
APPLICABILITY
All
All
All