Hybrid/EV Energy Storage (Hybrid Powertrain Control Module 2)

DTC P0601-P0604 or P0606 (Hybrid Powertrain Control Module 2)

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 Descriptors
DTC P0601 00
- Control Module Read Only Memory Performance

DTC P0602 00
- Control Module Not Programmed

DTC P0603 00
- Control Module Long Term Memory Reset

DTC P0604 00
- Control Module Random Access Memory Performance

DTC P0606 00
- Control Module Processor Performance

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the Hybrid/EV Powertrain Control Module 2. This diagnostic also addresses if the Hybrid/EV Powertrain Control Module 2 is not programmed. The Hybrid/EV Powertrain Control Module 2 monitors its ability to read and write to the memory. It also monitors a timing function. No external circuits are involved.

Conditions for Running the DTC

* Vehicle ON.
* The system voltage is at least 7 V.

Conditions for Setting the DTC

The Hybrid/EV Powertrain Control Module 2 detects an internal malfunction or incomplete programming.

Action Taken When the DTC Sets

* DTCs P0601, P0602, P0603, P0604, and P0606 are Type A DTCs.
* The high voltage contactor relays may open.

Conditions for Clearing the DTC

DTCs P0601, P0602, P0603, P0604, and P0606 are Type A DTCs.

Diagnostic Aids

* DTC P0606 may set in Hybrid/EV Powertrain Control Module 2 due to other faults. Do not replace the Hybrid/EV Powertrain Control Module 2 until other DTCs are diagnosed first.
* DTC P0606 may set when the 12 V battery has been disconnected/re-connected or if the 12 V battery has been overcharged (over 18 V).

Reference Information
Schematic Reference

Hybrid Energy Storage Schematics Hybrid Energy Storage Schematics
Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1
Description and Operation

Drive Motor Battery System Description Drive Motor Battery System 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
Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Circuit/System Verification

Note: Do not replace the K114B Hybrid/EV Powertrain Control Module 2 with DTC P0606 stored as a history code.

1. Vehicle OFF and all vehicle systems off. It may take up to 2 minutes for all vehicle systems to power down.
2. Vehicle ON, verify that DTC P0601, P0602, P0603, P0604, or P0606 is not set.

• If DTC P0606 is set with other DTCs set, diagnose all other DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle
• If DTC P0602 is set, program the K114B Hybrid/EV Powertrain Control Module 2. If the DTC resets, replace the K114B Hybrid/EV Powertrain Control Module 2.
• If DTC P0601, P0603, P0604, or P0606 is set without other DTCs set, replace the K114B Hybrid/EV Powertrain Control Module 2.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Control Module References Programming and Relearning for hybrid/EV powertrain control module 2 replacement, programming and setup