Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
Is the PID temperature greater than 77 C (170.6 F)?
Yes | No |
|---|---|
The system is operating correctly at this time. CLEAR the DTCs. REPEAT the self-test. | REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test. |
DL12 ENGINE TEMPERATURE INDICATOR LAMP ON OR TEMPERATURE GAUGE INDICATES HOT WITH NO DTCS
Note: For Engine Temperature Warning Indicator system problems, refer to the Workshop Manual Section 413-01, Instrument Cluster.
• PCM connector disconnected.
• Ignition ON, engine OFF.
Does the engine temperature warning indicator lamp turn OFF (prove out) and\or the temperature gauge return to the normal zone with the PCM disconnected?
Yes | No |
|---|---|
GO to DL13 . |
DL13 ENGINE OVERHEAT CONDITION INDICATED
WARNING: TO AVOID PERSONAL INJURY DO NOT UNSCREW THE COOLANT PRESSURE RELIEF CAP WHILE THE ENGINE IS OPERATING OR HOT. THE COOLING SYSTEM IS UNDER PRESSURE. STEAM AND HOT LIQUID CAN COME OUT FORCEFULLY WHEN THE CAP IS LOOSENED SLIGHTLY. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
• Check the engine coolant level.
Is the engine coolant fill level correct?
Yes | No |
|---|---|
CLEAR the DTCs. REPEAT the self-test. | CLEAR the DTCs. REPEAT the self-test. |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.