Fusion FWD L4-2.5L Hybrid (2010)
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K2 CHECK THE BATTERY VOLTAGE
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Turn off all interior/exterior lights and accessories.
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Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage.
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Does the battery voltage rise to 15.5 volts or higher?
Yes
REFER to Charging System to diagnose an overcharging condition.
No
GO to K3.
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K3 RECHECK FOR DTC B1317
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Turn the engine off.
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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 continuous memory DTCs.
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Carry out the SJB self-test.
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Is DTC B1317 present?
Yes
INSTALL a new SJB. REFER to Smart Junction Box (SJB) See: Power and Ground Distribution/Power Distribution Module/Service and Repair. TEST
the system for normal operation.
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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Pinpoint Test L: DTC B1318
Smart Junction Box (SJB)
Pinpoint Tests
Pinpoint Test L: DTC B1318
Refer to Wiring Diagram Set 13 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Power Distribution/SJB for schematic and connector information.
See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) monitors the voltage from the battery to determine if it goes above or below specific thresholds.
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DTC B1318 (Battery Voltage Low) - a continuous memory or on-demand DTC that sets when the SJB detects battery voltage below 10 volts on
circuit SDC02.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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High circuit resistance
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SJB