F 250 4WD Super Duty V8-5.4L (2009)
The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.
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H2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM
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Enter the following diagnostic mode on the scan tool: PCM Self-Test.
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Retrieve the continuous memory DTCs from the PCM.
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Is DTC P0620, P0625, P0626 or P065B set in the PCM?
Yes
REFER to Charging System.
No
GO to H3.
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H3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
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Ignition OFF.
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Check the battery condition and verify the battery is fully charged. Refer to Battery, Battery Condition Test. See: Starting and
Charging/Battery/Testing and Inspection/Pinpoint Tests
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Is the battery OK and fully charged?
Yes
GO to H4.
No
REFER to Charging System.
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H4 CHECK THE DSM VOLTAGE SUPPLY
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Measure and record the voltage at the battery.
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Disconnect: DSM C341A.
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Ignition ON.
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Measure the voltage between the DSM C341A-1, circuit SBB45 (GY/RD), harness side and ground.
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Is the voltage within 0.2 volt of the recorded battery voltage?
Yes
GO to H5.
No
REPAIR the circuit for high resistance. CLEAR the DTC. REPEAT the self-test.
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H5 CHECK THE DSM GROUND CIRCUIT
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Ignition OFF.
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Disconnect: Negative Battery Cable.
