Pinpoint Test AM: DTC P0B1C:00
High-Voltage Traction Battery
Pinpoint Test AM: DTC P0B1C:00
Refer to Wiring Diagram Set 12 (Fusion/Milan/MKZ, Fusion Hybrid, Milan Hybrid, MKZ Hybrid), Charging System for schematic and connector information. Diagrams By Number
Normal Operation
The Battery Pack Sensor Module (BPSM) monitors battery pack voltage of the High Voltage Traction Battery (HVTB). Normal pack voltage should be between 179-343 volts.
- P0B1C:00 (Hybrid Battery Pack Voltage Sense C Circuit High: No Sub Type Information) - Fault is set when BPSM sensed higher than normal voltage.
This pinpoint test is intended to diagnose the following:
- HVTB
- BPSM
PINPOINT TEST AM: DTC P0B1C:00
WARNING: To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage hybrid system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.
WARNING: Always inspect gloves before each use to prevent high-voltage shock. High-voltage insulated safety gloves with a leather outer glove are required to service some components of this vehicle where specified in the service procedures. All high-voltage insulated safety gloves must meet or exceed ANSI/ASTM class 00. Refer to Rubber Insulating Gloves Testing Rubber Insulating Gloves Testing. Failure to follow these instructions may result in serious personal injury or death.
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AM1 RETRIEVE BECM DTCs
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.
- Ignition OFF.
- Depower the HVTB system. Refer to High-Voltage Traction Battery Systems Depowering High-Voltage Traction Battery Systems Depowering.
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Clear DTCs - BECM.
- Enter the following diagnostic mode on the scan tool: Self Test - BECM.
- Are any DTCs other than P0B1C:00 retrieved?
Yes
REFER to the Battery Energy Control Module (BECM) DTC Chart and diagnose all other DTCs first. Battery Energy Control Module (BECM) DTC Chart
No
GO to AM2.
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AM2 CHECK THE BPSM
WARNING: Always wear high-voltage insulated safety gloves with leather outer gloves and a face shield when servicing the battery pack sensor module (BPSM) and never remove the high-voltage BPSM connector unless directed by a service procedure. High voltage is present at the BPSM at all times, even with service disconnect plug removal. Depowering the system will not remove voltage from the BPSM connector with the orange harness. Follow all service instructions. Failure to follow these instructions may result in serious personal injury or death.
- Ignition OFF.
- Install a new BPSM. Refer to Battery Pack Sensor Module (BPSM) Service and Repair.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Clear DTCs - BECM.
- Enter the following diagnostic mode on the scan tool: Self Test - BECM.
- Is DTC P0B1C:00 retrieved?
Yes
INSTALL a new HVTB (includes HVTB system wire harness). REFER to High-Voltage Traction Battery High-Voltage Traction Battery. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
Repair is complete. TEST the system for normal operation.
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