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Home >> Ford >> 2006 >> Focus L4-2.3L VIN Z >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Cooling System >> Testing and Inspection >> Pinpoint Tests >> Test C: The Engine Does Not Reach Normal Operating Temperature
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Test C: The Engine Does Not Reach Normal Operating Temperature

Pinpoint Test C: The Engine Does Not Reach Normal Operating Temperature

Normal Operation
Under normal operation, the battery Junction box (BJB) supplies constant power to the low speed engine cooling fan relay through fuse F1.2 (30A) and to the high speed cooling fan relay through fuse F1.6 (50A). The PCM provides the ground through the engine cooling fan resistor on circuit 15S-PA2 (GN/BU) for the low speed engine cooling fan relay on circuit 15S-PA9 (GN/WH) and also the high speed engine cooling fan relay on circuit 15S-PA1 (GN/BU).

Possible Cause
^ Thermostat

C1:





PINPOINT TEST C: THE ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE
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