P0A80

DTC P0A80

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (with HP2) (Initial Inspection and Diagnostic Overview)Diagnostic System Check - Vehicle (without HP2) (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptor
DTC P0A80
- Replace Hybrid Battery Pack

Circuit/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 (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 (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 (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Drive Motor Battery System Description (Drive Motor Battery System Description)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference

Control Module References (Programming and Relearning) 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 (Drive Motor Generator Battery End of Life Resistance).

Circuit/System Testing

Replace the drive motor battery assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.

Drive Motor Generator Battery Replacement (Drive Motor Generator Battery Replacement)