EV Controls

DTC P2534

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 Instructionsprovides an overview of each diagnostic category.

DTC Descriptor
DTC P2534
- Ignition 1 Switch Circuit Low Voltage

Circuit/System Description

The hybrid powertrain control module uses ignition 1 circuit terminal voltage to monitor the 12V system voltage. Ignition 1 circuit voltage also powers several of the internal drive motor generator power inverter control module drive motor generator power inverter module components.

Conditions for Running the DTC

Ignition is ON.

Conditions for Setting the DTC

The control module has detected ignition 1 circuit voltage is less than 2V.

Action Taken When the DTC Sets

* DTC P2534 is a Type A DTC.
* The hybrid powertrain control module commands the engine OFF.

Conditions for Clearing the DTC

DTC P2534 is a Type A DTC.

Reference Information
Schematic Reference

Hybrid Controls Schematics Hybrid Controls Schematics
Connector End View Reference

Component Connector End Views Connector End Views By Name
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 Testing

1. Ignition OFF, disconnect the T6 drive motor generator power inverter module connector X1.
2. Ignition ON, measure the voltage on the ignition 1 circuit, between connector X1 terminal 20 and ground. The voltage should be within 1.0 V of the battery voltage.

• If not the specified value test the ignition 1 signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the T6 drive motor generator power inverter module.

Repair Instructions

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

Control Module References Programming and Relearning for Drive Motor Generator Power Inverter Module replacement, setup, and programming.