2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1538
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0C32
- Hybrid Battery Pack Cooling System Performance
Circuit/System Description
The drive motor generator battery has four hybrid battery temperature sensors, an air inlet temperature sensor and an air outlet temperature sensor.
The air inlet temperature sensor is referred to as sensor 1 and the air outlet temperature sensor is referred to as sensor 2. The hybrid battery
temperature sensors are located on the top of the hybrid batteries. Both the hybrid battery temperature sensors and the air inlet and outlet sensors are
a variable resistor that measures the temperature. The control module supplies 5 V to the signal circuit and a ground for the low reference circuit.
The temperature sensor resistance changes with temperature. The lower the temperature, the higher the sensor resistance. The higher the
temperature, the lower the sensor resistance. The drive motor generator battery control module (BECM) uses these temperature sensors to
determine the hybrid battery temperature and to control the battery vent fan operation.
Conditions for Running the DTC
* The ignition is ON.
* The 12 V battery voltage is 9-18 V.
* The drive motor generator battery vent fan is ON.
Conditions for Setting the DTC
* DTCs P0AAE and P0AAF are not set.
* Drive motor generator battery air inlet temperature is less than 38锟斤拷C ( 100.4锟斤拷F) and the drive motor generator battery control module detects
the max battery temperature is more than 58锟斤拷C (136.4锟斤拷F) for 120 seconds.
Action Taken When the DTC Sets
DTC P0C32 is a type B DTC.
Conditions for Clearing the DTC
DTC P0C32 is a type B DTC.
Reference Information
Schematic Reference
Hybrid Cooling Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Battery Cooling Description ()
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
