Body Control Module (BCM)
WARNING:
- A risk assessment must be performed before any work is undertaken. Failure to comply with this instruction may result in personal injury or death.
- All electric vehicle work must be performed by a suitably qualified person. Failure to comply with this instruction may result in personal injury or death.
- Appropriate Personal Protection Equipment (PPE) must be worn when working on or near an electric vehicle high voltage system. Failure to comply with this instruction may result in personal injury or death.
- The hybrid/EV battery pack casing must not be disassembled due to the risk of exposure to hazardous voltage. Failure to comply with this instruction may result in personal injury or death.
- The electric power inverter converter casing must not be disassembled due to the risk of exposure to hazardous voltage. Failure to comply with this instruction may result in personal injury or death.
- If the hybrid/EV battery pack is damaged or overcharged, there is a risk of exposure to hazardous voltage and/or highly corrosive electrolyte mist. If liquid or vapor is observed leaking from the hybrid/EV battery pack, take the following action:
- Evacuate the area.
- Notify manager.
- Do not breathe smoke/vapor.
- Contain spillage using spill kit.
- Wash any spillage off body and clothing (remove contaminated clothing).
- If the electric vehicle warning indicator is illuminated, the battery energy control module cannot isolate the high voltage cables. Be aware that live working will be necessary to rectify the fault. Failure to comply with this instruction may result in personal injury or death.
- Be aware that a motor generator can generate a voltage if the wheels are rotated, even if the electric vehicle system has been made safe. Failure to comply with this instruction may result in personal injury or death.
CAUTION:
Diagnosis by substitution from a donor vehicle is NOT
acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle
NOTE:
- Guided Diagnostics must be followed and the repair advised by the process completed. Failure to do so may result in the rejection of any warranty claim made.
- If the control module or a component is at fault or may be at fault and the vehicle remains under manufacturer warranty, refer to the warranty policy and procedures article, or determine if any prior approval program is in operation, prior to the installation of a new module/component.
The service information below lists all Diagnostic Trouble Code(s) that could be set in the Body Control Module (BCM), for additional diagnosis and testing information refer to the relevant diagnosis and testing article. For additional information, refer to: the appropriate Body Control Module/Gateway Module article.