2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1457

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1457

- 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.

Conditions for Running the DTC

* DTC P0A1F is not set.

* The ignition is ON.

* The 12 V battery voltage is 9-18 V.

Conditions for Setting the DTC

P0B3D, P0B42, P0B47, P0B4C, P0B51, P0B56, P0B5B, P0B60, P0B65, P0B6A, P0B6F, P0B74, P0B79, P0B7E, P0B83, P0B88, P0B8D,

P0B92, and P0B97

Any two consecutive hybrid battery voltages are less than 7.5 V for 1.5 seconds.

P0B9C

Hybrid battery number 20 voltage is less than 7.5 V for 1.5 seconds. DTC P0B9C only requires one voltage failure because battery 20 is the last