P0C01
DTC P0C01
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 P0C01
- Drive Motor High Current
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 starter generator through the sequencing actuation of high current switching transistors called insulated gate bipolar transistors. Each insulated gate bipolar transistor assembly is monitored for overcurrent conditions.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
One or more phase currents are greater than ±396 A.
Action Taken When the DTC Sets
* DTC P0C01 is a Type B DTC.
* The starter generator regeneration and power assist functions are disabled.
Conditions for Clearing the DTC
DTC P0C01 is a Type B DTC.
Diagnostic Aids
The 14 V power module will still be active.
Reference Information
Schematic Reference
* Hybrid/EV Controls Schematics
* Hybrid/EV Energy Storage Schematics
Description and Operation
* Starter Generator Description and Operation
* Generator Control Module Description and Operation
* Hybrid Modes of Operation Description
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Circuit/System Verification
1. Verify DTCs P0BE6, P0BE7, P0BE8, P0BEE, P0BEF, and P0BF0 are not set.
2. If the DTC is set, clear DTC; Turn the ignition OFF for 2 minutes. Turn the ignition ON, Operate vehicle within conditions for running and setting DTC. If the DTC resets, go to Circuit/System Testing.
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 condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Perform the High Voltage Disabling .
2. Ignition OFF, disconnect the 3-phase cables from the K59 starter generator control module.
3. Test for infinite resistance to 3-phase circuit terminals listed below and ground:
* X8 phase U terminal
* X7 phase V terminal
* X6 phase W terminal
• If not the specified value, disconnect the 3-phase cables from the A15 starter generator, and test the 3-phase circuit for a short to ground. If the circuit tests normal, replace the A15 starter generator motor.
4. Replace the K59 starter generator control module. If the DTC resets replace the A15 starter generator.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Starter Generator Replacement
* Drive Motor Generator Battery Cable Replacement for 3-Phase Cable Assembly replacement
* Control Module References Control Module References for Generator Control Module, also called the Starter Generator Control Module, replacement, programming and setup