Volt |
||||||||
|
|
|
|||||||
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The hybrid powertrain control module 2 monitors individual cell voltage readings from the battery energy control module. The battery energy control module monitors the voltage of the 96 battery cell groups. Voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A serviceable voltage sense harness joins this connector to a drive motor battery high-voltage interface control module, also located on the top surface of the battery section. The drive motor battery high-voltage interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one drive motor battery high-voltage interface control module located on battery sections one and two, and two drive motor battery high-voltage interface control modules associated with battery section three. The drive motor battery high-voltage interface control module, voltage sense harnesses, battery control harness and battery energy control module are all considered serviceable components.
| • | The hybrid powertrain control module 2 and battery energy control module is awake and communicating. |
| • | DTC U0111 or U185A is not set. |
| • | The hybrid powertrain control module 2 and battery energy control module is awake and communicating. |
| • | The 12 V battery voltage is greater than or equal to 9 V. |
| • | DTC P1A07 is not set. |
The hybrid powertrain control module 2 detects difference of 10 V between the average cell group voltage multiplied by 96 and the voltage measured at battery side of the main contactors.
The battery energy control module detects the terminal voltage is less than 24 V on the battery side of the main contactors.
The battery energy control module detects the terminal voltage is greater than 456 V on the battery side of the main contactors.
DTCs P0ABB, P0ABC and P0ABD are type B DTCs.
DTCs P0ABB, P0ABC and P0ABD are type B DTCs.
The hybrid/EV battery pack high-voltage manual service disconnect is out, not installed correctly, or a blown manual service disconnect fuse will cause P0ABB and/or P0ABC to set.
Hybrid Energy Storage Schematics
Drive Motor Battery System Description
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
EL-48900 HEV Safety Kit
For equivalent regional tools, refer to Special Tools .
Ignition ON, engine OFF, observe the battery energy control module scan tool Hybrid Battery Pack Terminal 1 Voltage, Hybrid Battery Pack Terminal 2 Voltage parameters, and the hybrid powertrain control module 2 Hybrid Battery Pack Voltage parameter. The readings should be between 288-393.6 V, and should be within 10 V of each other.
Danger: High voltage enabling and disabling shall be only performed by High Voltage Qualified Technicians. The procedures for high-voltage enabling/disabling can be found in the service instructions and must be strictly followed at all times. The usage of the Protocol High Voltage Disabling/Enabling is mandatory. The High-Voltage Qualified Technician is responsible for the adherence to the manufacturer's service instructions as well as current national legal regulations.
Failure to follow the procedures exactly as written may result in serious injury or death. Questions regarding training can be answered by your national training centre.Danger: Any hybrid/EV battery pack replacement shall be performed by High-Voltage Qualified Technicians only. The replacement procedure can be found in the service instruction and must be strictly followed at all times. The High-Voltage Qualified Technician is responsible for adherence to the manufacturer's service instructions as well as current national legal regulations. If the hybrid/EV battery pack needs to be replaced contact the Technical Assistance Centre for further instructions prior to removal of the battery pack.
| ⇒ | If any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle |
Perform the Diagnostic Repair Verification after completing the repair.
| • | Control Module References for battery energy control module and hybrid powertrain control module 2 replacement , programming and set-up for the hybrid/EV battery pack replacement. |
| ©© Copyright Chevrolet. All rights reserved |
