P0C0B

DTC P0C0B

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 P0C0B

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Drive Motor Inverter Supply Voltage Circuit

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 inverter supply voltage circuit detects the loss of the bias power supply to the insulated gateway bi-polar transistors. This is an internal fault detection of the generator control module. This fault is handled inside the generator control module and no external circuits are involved.

Conditions for Running the DTC

* The ignition is on and greater than 7 volts.

* The drive motor control module is awake.

Conditions for Setting the DTC

The generator control module does not detect voltage at the insulated gate bi-polar transistor bias supply.

Action Taken When the DTC Sets

* DTC P0C0B is a Type A DTC.

* The drive motor will be disabled.

Conditions for Clearing the DTC

DTC P0C0B is a Type A DTC.

Diagnostic Aids

The 14V power module remains active.

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

1. Verify DTC P0562 is not set.

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

2. If DTC P0C0B is set, program the K59 starter generator control module. If the DTC resets, 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 the Starter Generator Control Module, replacement, programming and setup.