2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1448
DTC P0B42
- Hybrid Battery 2 Circuit Low Voltage
DTC P0B47
- Hybrid Battery 3 Circuit Low Voltage
DTC P0B4C
- Hybrid Battery 4 Circuit Low Voltage
DTC P0B51
- Hybrid Battery 5 Circuit Low Voltage
DTC P0B56
- Hybrid Battery 6 Circuit Low Voltage
DTC P0B5B
- Hybrid Battery 7 Circuit Low Voltage
DTC P0B60
- Hybrid Battery 8 Circuit Low Voltage
DTC P0B65
- Hybrid Battery 9 Circuit Low Voltage
DTC P0B6A
- Hybrid Battery 10 Circuit Low Voltage
DTC P0B6F
- Hybrid Battery 11 Circuit Low Voltage
DTC P0B74
- Hybrid Battery 12 Circuit Low Voltage
DTC P0B79
- Hybrid Battery 13 Circuit Low Voltage
DTC P0B7E
- Hybrid Battery 14 Circuit Low Voltage
DTC P0B83
- Hybrid Battery 15 Circuit Low Voltage
DTC P0B88
- Hybrid Battery 16 Circuit Low Voltage
DTC P0B8D
- Hybrid Battery 17 Circuit Low Voltage
DTC P0B92
- Hybrid Battery 18 Circuit Low Voltage
DTC P0B97
- Hybrid Battery 19 Circuit Low Voltage
DTC P0B9C
- Hybrid Battery 20 Circuit Low Voltage
Circuit/System Description
The system contains twenty battery modules. Each module contains two 7.2 V cells for a total nominal system voltage of 288 V. Each battery
module is rated at 14.4 V direct current (DC) and all the modules are connected together in series. The drive motor generator battery is also referred
to as the hybrid battery. The drive motor generator battery control module is also referred to as the battery energy control module (BECM). The
drive motor generator battery control module monitors the hybrid battery voltage on the twenty battery modules. The drive motor generator battery
control module determines the actual terminal voltage by monitoring the output voltage from the high voltage contactors.
The drive motor generator battery control module will diagnose its own systems and determine when a fault condition is present. Diagnostics and
system status is communicated from the drive motor generator battery control module to the hybrid powertrain control module (HPCM) through
serial data. The hybrid powertrain control module is the host controller for diagnostic trouble code (DTC) information.
