F 350 2WD Super Duty V10-6.8L (2009)
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Ignition ON.
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Enter the following diagnostic mode on the scan tool: SJB Self-Test.
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Clear the DTCs. Repeat the SJB self-test.
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Is DTC B1318 still present?
Yes
GO to D2.
No
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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D2 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 D3.
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D3 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 D4.
No
REFER to Charging System.
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D4 CHECK THE SJB VOLTAGE SUPPLY
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Measure and record the voltage at the battery.
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Disconnect: SJB C2280H.
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Ignition ON.
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Measure the voltage between the SJB C2280H-1, circuit SDC02 (RD), harness side and ground.
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Is the voltage within 0.2 volt of the recorded battery voltage?
Yes
GO to D5.
No
