PCM DTC Chart

Operation).

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

DTC	Description	Action
P0125	Insufficient Coolant Temp For Closed Loop Fuel Control	GO to Pinpoint Test C
P0128	Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)	GO to Pinpoint Test C
P0217	Engine Coolant Overtemperature Condition	GO to Pinpoint Test B
P0480	Fan 1 Control Circuit	Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual.
P0481	Fan 2 Control Circuit	Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual.
P1285	Cylinder Head Overtemperature Condition	Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual.
P1299	Cylinder Head Overtemperature Protection Active	GO to Pinpoint Test B
All Other PCM Diagnostic Trouble Codes (DTCs)	—	REFER to: Electronic Engine Controls (303-14C Electronic Engine Controls - 5.0L 32V Ti-VCT/5.0L Ti-VCT V8 (308kW/418PS), Diagnosis and Testing).

Inspection and Verification

NOTICE: The engine cooling system is filled with Motorcraft® Orange Antifreeze/Coolant. Always fill the cooling system with the manufacturer's specified coolant. Chemically flush the cooling system if a non-specified coolant has been used. Failure to follow these instructions may damage the engine or cooling system.

NOTE: During normal vehicle operation, Motorcraft Orange Antifreeze/Coolant may change color from orange to pink or light red. As long as the engine coolant is clear and uncontaminated, this color change does not indicate the engine coolant has degraded nor does it require the engine coolant to be drained, the system to be flushed, or the engine coolant to be replaced.

1. Verify the customer concern.

2. Visually check the engine coolant level at the degas bottle when the system is cold.

3. Make sure the pressure relief cap is installed correctly.

4. Record any cooling system Diagnostic Trouble Codes (DTCs) retrieved. Refer to the PCM DTC chart in this section for DTC descriptions.

5. NOTE: Take note of any coolant odor or steam coming from cooling system components.

If the system coolant is filled correctly and no Diagnostic Trouble Codes (DTCs) associated with fail-safe cooling are retrieved, verify the customer concern by operating the engine to duplicate the condition.

6. Visually inspect for obvious signs of any mechanical or electrical damage.

Source reference 579

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