P0C76

DTC P0C76

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0C76

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Hybrid/EV Battery System High Voltage Present

Circuit/System Description

The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. These three control modules are non serviceable and are part of the generator control module.

The generator control and battery module assembly contains a high voltage contactor. The high voltage contactor allows the high voltage DC batteries to be connected to the vehicle and safely contain the high voltage DC within the generator control and battery module assembly. The high voltage contactor is connected in series with the positive side of the DC voltage potential of the high voltage battery. The hybrid powertrain control module supplies ground to the control circuit of the high voltage contactor to close.

Conditions for Running the DTC

High Voltage Contactor Relay is commanded open.

Conditions for Setting the DTC

The high voltage circuit is greater than 65 V for 6.5 seconds after the contactor has been commanded open.

Action Taken When the DTC Sets

* DTC P0C76 is a Type A DTC.

* A clear DTC command will not clear this DTC or the Action Taken.

Conditions for Clearing the DTC

DTC P0C76 is a Type A DTC.

Diagnostic Aids

A clear DTC command will not clear this DTC or the Action Taken.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics [1][2]Electrical Diagrams

Description and Operation

* Starter Generator Description and Operation Starter Generator Description and Operation

* Generator Control Module Description and Operation Generator Control Module Description and Operation

* Hybrid Modes of Operation Description Hybrid Modes of Operation Description

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

Refer to Hybrid\EV Battery Voltage Present Hybrid/EV Battery Voltage Present. If the contactors test normal, replace the K59 starter generator control module.

Repair Instructions

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

Control Module References Programming and Relearning for Generator Control Module, also called Starter Generator Control Module, replacement, programming and setup.