Service Information

Volt

DTC P0D43-P0D45

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 P0D43: Battery Charger 14 V Output Voltage Sensor Performance

DTC P0D44: Battery Charger 14 V Output Voltage Sensor Circuit Low Voltage

DTC P0D45: Battery Charger 14 V Output Voltage Sensor Circuit High Voltage

Circuit/System Description

The battery charger will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the battery charger to the hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for DTC information.

The battery charger takes internal measurements that verify the charger is performing properly. The battery charger measures internal voltages, currents, and temperatures and verifies they are within the proper range.

Conditions for Running the DTC

The vehicle needs to be connected to an AC supply and the battery charger is charging the vehicle.

Conditions for Setting the DTC

The battery charger output voltage is outside expected range.

Action Taken When the DTC Sets

•	DTC P0D43-P0D44 are type A DTCs.

•	Disables high-voltage battery charging.

Conditions for Clearing the DTC

DTC P0D43-P0D44 are type A DTCs.

Diagnostic Aids

External battery chargers can cause this DTC to set. Ensure customer did not have an external battery charger connected to vehicle during plug-in charging attempt.

Reference Information

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

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 .

Circuit/System Testing

Danger: Always perform the High-Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.

The High-Voltage Disabling procedure will perform the following tasks:

•	Identify how to disable high voltage.

•	Identify how to test for the presence of high voltage.

•	Identify conditions under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

Before working on any high-voltage system, be sure to wear the following Personal Protection Equipment:

•	Safety goggles with appropriate side shields when within 15 metres (50 feet) of the vehicle, either indoors or outdoors.

•	Certified and up-to-date Class "0" Insulation gloves rated at 1000 V with leather protectors.

-	Visually and functionally inspect the gloves before use.

-	Wear the Insulation gloves with leather protectors at all times when working with the high-voltage battery assembly, whether the system is energised or not.

Failure to follow the procedures exactly as written may result in serious injury or death.

Vehicle OFF, disable the high voltage at the T18 battery charger. Refer to High Voltage Disabling . Disconnect the X1 harness connector at the T18 battery charger.
Vehicle ON, test for B+ between the IGN circuit terminal A and earth.

⇒	If less than the specified range, test the B+ circuit for a short to ground or an open/high resistance.

If all circuits test normal, replace the T18 battery charger.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for battery charger replacement, programming and set-up