Fusion FWD L4-2.5L Hybrid (2010)
WARNING: Never install the service disconnect plug with the high-voltage bussed electrical center (BEC) cover removed. Always install the
cover prior to connecting the service disconnect plug. The high-voltage BEC cover prevents inadvertent contact with the high voltage which is
present at several points under the cover. Failure to follow these instructions may result in serious personal injury or death.
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Ignition OFF.
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Depower the HVTB. Refer to Hybrid Drive Systems.
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Remove the high-voltage BEC cover. Refer to the High-Voltage Low-Current Fuse procedure in
Hybrid Drive Systems.
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Inspect and measure the resistance of the high-voltage low-current fuse.
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Is the fuse undamaged and the resistance less than 5 ohms?
Yes
GO to D2.
No
INSTALL a new high-voltage, low-current fuse. INSPECT the high-voltage BEC for signs of an obvious short condition. INSTALL a new high-voltage
BEC as needed. If an obvious short condition is not identified, CARRY OUT self-test of the Battery Energy Control Module (BECM). REFER to Hybrid
Drive Systems to diagnose BECM DTCs.
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D2 CARRY OUT TESTING OF THE HIGH-VOLTAGE CABLES
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Disconnect: DC/DC C1457A.
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Disconnect: High-Voltage BEC C4236A.
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Measure the resistance between DC/DC C1457A, harness side and high-voltage BEC
C4236A, harness side as follows:
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Are the resistances less than 5 ohms?
Yes
GO to D3.
No
