Drive Motor Generator Battery Odor

Drive Motor Generator Battery Odor

System Description

Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.

The High Voltage Disabling procedure will perform the following tasks:

* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

Failure to follow the procedures exactly as written may result in serious injury or death.

The drive motor generator battery contains 22 individual battery modules. The drive motor generator battery has two venting systems. One is for generator battery air cooling. The other is for venting of possible electrolyte gases from the 22 hybrid batteries. The hybrid batteries vent system connects all the battery vents to a rubber manifold that exits at the rear of the hybrid drive motor generator battery through a single hose and is vented through the load floor panel of the vehicle. These vents are mechanical and will only open when a predetermined amount of internal battery pressure is reached.

The drive motor generator battery temperature is controlled by the coolant cooler assembly also referred to as the thermal management system. The liquid cooling maintains battery pack temperature through passages in the upper and lower battery modules.

Check all electrical components for signs of overheating this may cause an electrical odor. Check the exhaust duct for proper operation this could cause the hybrid drive motor battery cooling air to be vented to the passenger compartment.

Check the intake duct for obstruction that may cause overheating.

Perform a visual inspection of all hoses and manifolds in the cooling and venting system for kinks, restrictions, coolant leaks or poor connections, that could create an odor.

Reference Information
Special Tools

EL-48900 HEV Safety Kit

Repair Instructions

Perform a visual inspection of all hoses and manifolds in the cooling and venting system for kinks, restrictions, leaks and poor connections. Ensure that the drive motor generator cooling system and the battery vent tube assembly are properly installed.

Drive Motor Generator Battery Replacement (Drive Motor Generator Battery Control Module and Bracket Replacement)