Volt

DTC P0A9C-P0A9E, P0AC6-P0ACD, P0AE9-P0AEB, P0BC3-P0BC5, P0C34-P0C36, P0C7D-P0C9A or P0CA9-P0CBA

The hybrid/EV battery pack has 16 hybrid/EV battery temperature sensors. The hybrid/EV battery temperature sensors are located on the top of the hybrid/EV batteries. The temperature sensor is a variable resistor that measures the temperature of the hybrid/EV battery cell groups. The hybrid/EV battery interface control module supplies 5 V to the signal circuit and a ground for the low-reference circuit. The hybrid/EV battery temperature sensor resistance changes with battery temperature. The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the resistance of the sensor. The hybrid/EV powertrain control module 2 uses the battery temperature sensors to determine the hybrid/EV battery module temperature to control the battery cooling system operation.

P0A9D, P0A9E, P0AC7, P0AC8, P0ACC, P0ACD, P0AEA, P0AEB, P0BC4, P0BC5, P0C35, P0C36, P0C7E, P0C7F, P0C83, P0C84, P0C8A, P0C8B, P0C8F, P0C90, P0C94, P0C95, P0C99, P0C9A, P0CAA, P0CAB, P0CAF, P0CB0, P0CB4, P0CB5, P0CB9 and P0CBA

P0A9C, P0AC6, P0ACB, P0AE9, P0BC3, P0C34, P0C7D, P0C82, P0C89, P0C8E, P0C93, P0C98, P0CA9, P0CAE, P0CB3 and P0CB8

P0A9C, P0AC6, P0ACB, P0AE9, P0BC3, P0C34, P0C7D, P0C82, P0C89, P0C8E, P0C93, P0C98, P0CA9, P0CAE, P0CB3 and P0CB8

P0A9D, P0AC7, P0ACC, P0AEA, P0BC4, P0C35, P0C7E, P0C83, P0C8A, P0C8F, P0C94, P0C99, P0CAA, P0CAF, P0CB4 and P0CB9

The hybrid/EV battery temperature sensor is greater than 87.5°C (189.5°F).

P0A9E, P0AC8, P0ACD, P0AEB, P0BC5, P0C36, P0C7F, P0C84, P0C8B, P0C90, P0C95, P0C9A, P0CAB, P0CB0, P0CB5 and P0CBA

The hybrid/EV battery temperature sensor is -40°C (-40°F).

DTCs P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, P0AEB, P0BC3, P0BC4, P0BC5, P0C34, P0C35, P0C36, P0C7D, P0C7E, P0C7F, P0C82, P0C83, P0C84, P0C89, P0C8A, P0C8B, P0C8E, P0C8F, P0C90, P0C93, P0C94, P0C95, P0C98, P0C99, P0C9A, P0CA9, P0CAA, P0CAB, P0CAE, P0CAF, P0CB0, P0CB3, P0CB4, P0CB5, P0CB8, P0CB9, and P0CBA are type B DTCs.

Low or no coolant in the system may set a DTC P0A9D, P0AC7, P0ACC, P0AEA, P0BC4, P0C35, P0C7E, P0C83, P0C8A, P0C8F, P0C94, P0C99, P0CAA, P0CAF, P0CB4 or P0CB9.

Schematic Reference

Hybrid Cooling Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Hybrid Cooling System Description and Operation

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

For equivalent regional tools, refer to Special Tools .

Vehicle in Service Mode, observe the scan tool Hybrid Battery 1-16 temperature parameters. The readings should be between -39 and +87°C (-38.2 and + 188.6°F) with no greater than a 15°C (27°F) difference between any of the temperature sensor readings.

Danger: High voltage enabling and disabling shall be only performed by High Voltage Qualified Technicians. The procedures for high-voltage enabling/disabling can be found in the service instructions and must be strictly followed at all times. The usage of the Protocol High Voltage Disabling/Enabling is mandatory. The High-Voltage Qualified Technician is responsible for the adherence to the manufacturer's service instructions as well as current national legal regulations.

Danger: Any hybrid/EV battery pack replacement shall be performed by High-Voltage Qualified Technicians only. The replacement procedure can be found in the service instruction and must be strictly followed at all times. The High-Voltage Qualified Technician is responsible for adherence to the manufacturer's service instructions as well as current national legal regulations. If the hybrid/EV battery pack needs to be replaced contact the Technical Assistance Centre for further instructions prior to removal of the battery pack.

1. Vehicle in Service Mode, verify that DTC P0C47, P0CE2, P0CE3, P1E8C, P1EC6 P1EC7, or P1EC8 is not set.

⇒	If DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .

2. If DTC P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, P0AEB, P0BC3, P0BC4, P0BC5, P0C34, P0C35, P0C36, P0C7D, P0C7E, P0C7F, P0C82, P0C83, P0C84, P0C89, P0C8A, P0C8B, P0C8E, P0C8F, P0C90, P0C93, P0C94, P0C95, P0C98, P0C99, P0C9A, P0CA9, P0CAA, P0CAB, P0CAE, P0CAF, P0CB0, P0CB3, P0CB4, P0CB5, P0CB8, P0CB9, or P0CBA is set, replace the A4 hybrid/EV battery pack.

Perform the Diagnostic Repair Verification after completing the repair.