Circuit/System Verification
- Verify that DTC B137A is not current in the serial data gateway module (SDGM).
- If the DTC is current in the SDGM, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Verify that DTC U1815 is not set current only in the HPCM.
- If the DTC is current in the HPCM only, replace the drive motor power inverter module (PIM).