Diagnostic Aids
CAUTION:
The battery energy control modules internal cell balancing circuitry is powered by the cell group voltage sense circuits. In order to prevent an unrecoverable, unbalanced Hybrid/EV battery section or internal control module damage, always take the following actions:
- Disconnect ALL of the battery energy control module connectors prior to disconnecting any Hybrid/EV battery section connector.
- Reconnect all the Hybrid/EV battery section connectors prior to reconnecting the battery energy control module connectors.
- Disconnect and reconnect the battery energy control module connectors ONLY in the sequence provided in Repair Instructions.
The Hybrid/EV Battery Section schematics in Energy Storage identify the battery section and voltage sense circuit terminal locations appropriate to each cell group.
Use the table below as an aid to identify connector number location. This table does not indicate the disconnect/connect sequence:
| Top View | ||
|---|---|---|
| Brown 20-Way = X4 | K16 Battery Energy Control Module Connector Identification | Brown 20-Way = X3 |
| Black 20-Way = X5 | Gray 20-Way = X2 | |
| Gray 20-Way = X6 | Black 20-Way = X1 | |
| Black 16-Way = X8 | Green 20-Way = X7 | |