Symptom Chart

WARNING: This page is about a different variant/trim than selected.

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

Condition	Possible Sources	Actions
Loss of coolant	Refer to the Pinpoint Test	GO to Pinpoint Test A
The engine overheats	Refer to the Pinpoint Test	GO to Pinpoint Test B
The engine does not reach normal operating temperature	Refer to the Pinpoint Test	GO to Pinpoint Test C
The electric coolant pump is inoperative or does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test D
The block heater does not operate correctly	Block heater power cable Block heater	CHECK continuity in all 3 power cable circuits. If any circuit measures more than 5 ohms, INSTALL a new power cable. CHECK the resistance of the block heater. If the resistance does not measure between 30 and 40 ohms, INSTALL a new block heater.
The electric cooling fan is inoperative in one or more speeds or does not operate correctly	Wiring Relays Fuses Cooling fan motor Cooling fan controller	Refer to Engine Controls - Introduction (Hybrid) .
The electric cooling fan stays on all the time	Wiring Relays	Refer to Engine Controls - Introduction (Hybrid) .
Noisy electric cooling fan operation	Foreign material contamination Fan motor Fan blade detached from fan motor	REMOVE the foreign material from the cooling fan and shroud. TEST the system for normal operation. If still noisy, INSTALL a new cooling fan assembly. INSTALL a new cooling fan assembly.
Auxiliary coolant pump failure	Wiring Relay Pump Fuse	Refer to Engine Controls - Introduction (Hybrid) .
3-way coolant valve failure	Wiring Relay 3-way valve Fuse	Refer to Engine Controls - Introduction (Hybrid) .