System Revisions

The 2003 Durango HVAC system remains mostly carryover from 2002. Revisions to the 2003 HVAC system include:

• a change in A/C mode switch status indicator operation when performing the A/C Cooldown test. Refer to The A/C Cooldown Test under SYSTEM DIAGNOSTICS  for more information.
• a change in EBL mode switch status indicator operation when performing the HVAC Door Recalibration. Refer to The HVAC Door Recalibration Function under SYSTEM DIAGNOSTICS  for more information.
• updated diagnostic procedures using span data to diagnose HVAC Door Recalibration fault messages.