Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P0A80: Replace Hybrid Battery PackCircuit/System Description
The BECM measures the internal hybrid battery resistance across the high voltage (HV) battery string and in pairs. If the internal resistance values are out of range at a given battery temperature, this DTC will set. Higher internal resistance will also increase battery temperature.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | The 12 V battery voltage is 9-18 V. |
| • | Hybrid battery current is -70 to +100 A. |
| • | Hybrid battery temperature is -10 to +50°C (14-22°F). |
Conditions for Setting the DTC
One of the following conditions exists for 10 minutes:
| • | Hybrid battery pack calculated hybrid battery resistance is greater than the value specified in Drive Motor Generator Battery End of Life Resistance. |
| • | Hybrid battery resistance is greater than the value specified in Drive Motor Generator Battery End of Life Resistance. |
Action Taken When the DTC Sets
| • | Hybrid battery power is reduced to 0 Kw. |
| • | The battery cooling fan turns ON high speed. |
| • | The driver information center (DIC) displays the SERVICE HYBRID SYSTEM message. |
Conditions for Clearing the DTC
DTC P0A80 is a type A DTC.
Reference Information
Schematic Reference
Hybrid Energy Storage Schematics
Connector End View Reference
Description and Operation
Drive Motor Battery System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
Observe the scan tool BECM Hybrid Batt. Pack Resistance parameter. The reading should be less than the resistance values specified in Drive Motor Generator Battery End of Life Resistance.
Circuit/System Testing
Replace the drive motor battery assembly.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
