Symptom Chart: Auxiliary Climate Control

Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to ENGINE CONTROLS - DIAGNOSTIC METHODS (EXCEPT DIESEL & HYBRID) for information regarding Ford-specific diagnostic practices.

SYMPTOM CHART

Condition	Possible Sources	Actions
The auxiliary HVAC functions are inoperative/do not operate correctly from touch screen only	Communication network FDIM	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary blower motor is inoperative	Fuse(s) Wiring, terminals or connectors Auxiliary blower motor relay Auxiliary blower motor speed control Auxiliary blower motor HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary blower motor does not operate correctly using both the front and rear auxiliary controls	Wiring, terminals or connectors Auxiliary blower motor relay Auxiliary blower motor speed control HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary blower motor does not operate correctly using the rear auxiliary controls only	Wiring, terminals or connectors Rear auxiliary control assembly HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary temperature control is inoperative or does not operate correctly using both the front and rear auxiliary controls	Wiring, terminals or connectors Auxiliary blend door actuator HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary temperature control is inoperative or does not operate correctly using the rear auxiliary controls only	Wiring, terminals or connectors Rear auxiliary control assembly HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary mode control is inoperative or does not operate correctly using both the front and rear auxiliary controls	Wiring, terminals or connectors Auxiliary mode door actuator HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary mode control is inoperative or does not operate correctly using the rear auxiliary controls only	Wiring, terminals or connectors Rear auxiliary control assembly HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .
The auxiliary temperature, mode and blower motor controls are inoperative or do not operate correctly using the rear auxiliary controls only	Wiring, terminals or connectors Rear auxiliary control assembly HVAC module	REFER to Diagnostic Routine G: Auxiliary Climate Control System Functional Test .