Symptom Chart
WARNING: This page is about a different car, the 2016 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
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 12.5 and 17 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) . |