Symptom Troubleshooting Index

SYMPTOM TROUBLESHOOTING INDEX

Symptom	Diagnostic procedure	Also check for
Mode control motor does not run, or one or more modes do not work	Mode control motor circuit troubleshooting (see MODE CONTROL MOTOR CIRCUIT TROUBLESHOOTING )	HVAC DTCs (see GENERAL TROUBLESHOOTING INFORMATION ) Blown fuse No. 16 (7.5 A) in the under-dash fuse/relay box Cleanliness and tightness of all connectors
Recirculation control doors do not change between Fresh and Recirculate	Recirculation control motor circuit troubleshooting (see RECIRCULATION CONTROL MOTOR CIRCUIT TROUBLESHOOTING )	HVAC DTCs (see GENERAL TROUBLESHOOTING INFORMATION ) Blown fuse No. 16 (7.5 A) in the under-dash fuse/relay box Blown fuse No. 16 (7.5 A) in the under-dash fuse/relay box Cleanliness and tightness of all connectors
Blower and heater controls do not work	Heater control power and ground circuit troubleshooting (see HEATER CONTROL POWER AND GROUND CIRCUIT TROUBLESHOOTING )	HVAC DTCs (see GENERAL TROUBLESHOOTING INFORMATION ) Blown fuse No. 16 (7.5 A) in the under-dash fuse/relay box Blown fuse No. 16 (30 A) in the under-hood fuse/relay box, and No. 16 (7.5 A) and No. 18 (7.5 A) in the under-dash fuse/relay box Poor ground at G404 Cleanliness and tightness of all connectors