P0C11

DTC P0C11

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 P0C11

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Drive Motor Inverter Phase U High Temperature

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 drive motor control module operates the starter generator, also referred to as the drive motor, based upon hybrid powertrain control module commands. The drive motor control module controls the speed and output torque of the drive motor through the sequencing actuation of high current switching transistors called insulated gate bipolar transistors. The drive motor operates utilizing 3 phase AC. Each insulated gate bipolar transistor operates a single phase of the drive motor. Each phase is individually identified as U, V and W. The drive motor control module monitors the temperature of the switching transistors in order to detect inverter module overtemperature conditions. The generator control module is air cooled.

Conditions for Running the DTC

* The drive motor control module and hybrid powertrain control module are awake.

* DTC P0AEE, P0AF0, and P0AEF are not set.

Conditions for Setting the DTC

The Phase U DC/AC Inverter Temperature 1 is greater than 118°C (245°F) for 5 seconds.

Action Taken When the DTC Sets

* DTC P0C11 is a Type B DTC.

* The hybrid powertrain control module system starts to reduce the maximum torque beginning at 110°C (230°F) linearly down to 0 Nm(0 lb in) as the drive motor stator temperature approaches 120°C (248°F).

Conditions for Clearing the DTC

DTC P0C11 is a Type B DTC.

Diagnostic Aids

Ask about the customer's driving habits, trailer towing, etc.

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 P0C32, P0A81, P0A84, P0A85 or P0A7E are not set.

2. Ignition On, verify with a scan tool that the Phase U DC/AC Inverter Temperature 1 is less than 118°C (245°F).

• If greater than 118°C (245°F), inspect for proper operation of the hybrid battery cooling fan and ducts.

• If the hybrid cooling system tests normal, Reprogram 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.