Operation CHARM: Car repair manuals for everyone.

Hybrid Drive Systems: Service Precautions

Warnings




To avoid being burned, do not remove the starter/generator control module (SGCM) cap while the SGCM is hot. The cooling system will release scalding fluid and stream under pressure if the SGCM cap is removed while the SGCM is still hot.




To reduce the risk of severe shock or burns, always treat the 3 phase cable and connectors as if the voltage is present.

Be sure both the 12-volt and 42-volt sources are disconnected before begining extrication and/or rescue procedures.




To reduce the risk of personal injury from electrical shock, burns, and damage to any electrical components always disconnect 12 and 42-volt system batteries when performing service procedures under the vehicle hood, Within or around energy storage box, and/or related to hybrid vehicle systems.

The 42-volt system must be disconnected to fully neutralize the supplemental impact restraint system.