2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1531
DTC P0C11-P0C16
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0C11
- Drive Motor 1 Inverter Phase U Overtemperature
DTC P0C12
- Drive Motor 1 Inverter Phase V Overtemperature
DTC P0C13
- Drive Motor 1 Inverter Phase W Overtemperature
DTC P0C14
- Drive Motor 2 Inverter Phase U Overtemperature
DTC P0C15
- Drive Motor 2 Inverter Phase V Overtemperature
DTC P0C16
- Drive Motor 2 Inverter Phase W Overtemperature
Circuit/System Description
The drive motor generator power inverter control module (PIM) contains two motor control modules (MCMs) and the hybrid powertrain control
module (HPCM). Each MCM operates its respective drive motor generator based upon HPCM commands. Each MCM controls the speed, direction
and output torque of its respective drive motor generator through the sequencing actuation of high current switching transistors called insulated gate
bipolar transistors (IGBTs). Each drive motor generator operates utilizing 3 phase alternating current (ac) electricity. Each IGBT operates a single
phase of the drive motor generator. Each phase is individually identified as U, V and W. Each MCM monitors the temperature of each phase in
order to detect PIM overtemperature conditions.
Conditions for Running the DTC
P0C11-P0C16
The Hybrid Wakeup circuit is active
P0C11
P0AEE, P0AEF, and P0AF0 are not set.
P0C12
P0BD2, P0BD3, and P0BD4 are not set.
P0C13
P0BDC, P0BDD and P0BDE are not set.
P0C14
P0AF3, P0AF4, and P0AF5 are not set.
P0C15
P0BD7, P0BD8, and P0BD9 are not set.
P0C16
P0BE1, P0BE2, and P0BE3 are not set.
